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This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urinary tract, Subject name: Anatomy | Chronic urethral obstruction due to benign prismatic hyperplasia can lead to the following change in kidney parenchyma
Select and explain.
A. Hyperplasia, B. Hyperophy, C. Atrophy, D. Dyplasia | C: Atrophy | Answer: C: Atrophy
Explanation: Chronic urethral obstruction because of urinary calculi, prostatic hyperophy, tumors, normal pregnancy, tumors, uterine prolapse or functional disorders cause hydronephrosis which by definition is used to describe dilatation of renal pelvis and calculus associated with progressive atrophy of the kidney due to obstruction to the outflow of urine Refer Robbins 7yh/9,1012,9/e. P950 |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vitamins and Minerals, Subject name: Biochemistry | Which vitamin is supplied from only animal source:
Select and explain.
A. Vitamin C, B. Vitamin B7, C. Vitamin B12, D. Vitamin D | C: Vitamin B12 | Answer: C: Vitamin B12
Explanation: Ans. (c) Vitamin B12 Ref: Harrison's 19th ed. P 640* Vitamin B12 (Cobalamin) is synthesized solely by microorganisms.* In humans, the only source for humans is food of animal origin, e.g., meat, fish, and dairy products.* Vegetables, fruits, and other foods of nonanimal origin doesn't contain Vitamin B12 .* Daily requirements of vitamin Bp is about 1-3 pg. Body stores are of the order of 2-3 mg, sufficient for 3-4 years if supplies are completely cut off. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Surgical Treatment Obesity, Subject name: Surgery | All of the following are surgical options for morbid obesity except -
Select and explain.
A. Adjustable gastric banding, B. Biliopancreatic diversion, C. Duodenal Switch, D. Roux en Y Duodenal By pass | D: Roux en Y Duodenal By pass | Answer: D: Roux en Y Duodenal By pass
Explanation: Ans. is 'd' i.e., Roux en Y Duodenal Bypass Bariatric surgical procedures include:a. Vertical banded gastroplastyb. Adjustable gastric bandingc. Roux-en Y gastric bypass (Not - Roux-en Y Duodenal Bypass)d. Biliopancreatic diversione. Duodenal switcho The surgical treatment of morbid obesity is known as bariatric surgery.o Morbid obesity is defined as body mass index of 35 kg/m2 or more with obesity related comorbidity, or BMI of 40 kg/m2 or greater without comorbidity.o Bariatric operations produce weight loss as a result of 2 factors. One is restriction of oralintake. The other is malabsorbtion of ingested food.o Gastric restrictive procedures include Vertical banded gastroplasty & Adjustable gastric bandingo Malabsorbtive procedures include Biliopancreatic diversion, and Duodenal switcho Roux-en Y gastric bypass has features of both restriction and malabsorptionBariatric Operations: Mechanism of ActionRestrictiveVertical banded gastroplastyLaparoscopic adjustable gastric bandingLargely Restrictive/Mildly MalabsorptiveRoux-en-Y gastric bypassLargely Malabsorptive/Mildly RestrictiveBiliopancreatic diversionDuodenal switch |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology | Following endaerectomy on the right common carotid, a patient is found to be blind in the right eye. It is appears that a small thrombus embolized during surgery and lodged in the aery supplying the optic nerve. Which aery would be blocked?
Select and explain.
A. Central aery of the retina, B. Infraorbital aery, C. Lacrimal aery, D. Nasociliary aretry | A: Central aery of the retina | Answer: A: Central aery of the retina
Explanation: The central aery of the retina is a branch of the ophthalmic aery. It is the sole blood supply to the retina; it has no significant collateral circulation and blockage of this vessel leads to blindness. The branches of this aery are what you view during a fundoscopic exam. Note: The infraorbital aery is a branch of the maxillary aery. It comes through the infraorbital foramen, inferior to the eye. It supplies the maxillary sinus, the maxillary incisors, canine and premolar teeth, and the skin of the cheek below the orbit. The supraorbital aery is another branch of the maxillary aery. It comes through the supraorbital foramen and supplies blood to the muscles, skin and fascia of the forehead. The lacrimal aery is a branch of the ophthalmic aery that supplies the lacrimal gland. The nasociliary aery doesn't exist, but there is a nasociliary nerve that travels with the ophthalmic aery. Ref: Moon D.A., Foreman K.B., Albeine K.H. (2011). Chapter 18. Orbit. In D.A. Moon, K.B. Foreman, K.H. Albeine (Eds), The Big Picture: Gross Anatomy. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology | Growth hormone has its effect on growth through?
Select and explain.
A. Directly, B. IG1-1, C. Thyroxine, D. Intranuclear receptors | B: IG1-1 | Answer: B: IG1-1
Explanation: Ans. is 'b' i.e., IGI-1GH has two major functions :-i) Growth of skeletal system :- The growth is mediated by somatomedins (IGF). Increased deposition of cailage (including chondroitin sulfate) and bone with increased proliferation of chondrocytes and osteocytes.ii) Metabolic effects :- Most of the metabolic effects are due to direct action of GH. These include gluconeogenesis, decreased peripheral utilization of glucose (decreased uptake), lipolysis and anabolic effect on proteins. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine | Scrub typhus is transmitted by: September 2004
Select and explain.
A. Louse, B. Tick, C. Mite, D. Milk | C: Mite | Answer: C: Mite
Explanation: Ans. C i.e. Mite |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics | Abnormal vascular patterns seen with colposcopy in case of cervical intraepithelial neoplasia are all except
Select and explain.
A. Punctation, B. Mosaicism, C. Satellite lesions, D. Atypical vessels | C: Satellite lesions | Answer: C: Satellite lesions
Explanation: Abnormal vascular pattern include punctation, mosaicism and atypical vessels. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urology, Subject name: Surgery | Per rectum examination is not a useful test for diagnosis of
Select and explain.
A. Anal fissure, B. Hemorrhoid, C. Pilonidal sinus, D. Rectal ulcer | C: Pilonidal sinus | Answer: C: Pilonidal sinus
Explanation: PILONIDAL SINUS/DISEASE (Jeep Bottom; Driver's Bottom) Pilus--hair; Nidus--nest It is epithelium lined tract, situated sho distance behind the anus, containing hairs and unhealthy diseased granula- tion tissue. It is due to penetration of hairs through the skin into subcutaneous tissue. It forms granuloma/unhealthy granulation tissue in the deeper plane. It is of infective origin and occurs in sacral region between the buttocks, umbilicus, axilla. Other indications of per rectal examination are:Carcinoma rectum, Stricture rectum, Polyps, BPH and carcinoma prostate, Secondaries in the rectovesical pouch (Blumer shelf), Sphincter tone, Pelvic abscess (is felt as boggy swelling), to feel the internal opening of anal fistulas, in bimanual palpation of the bladder or pelvic tumours, in acute abdominal conditions--it reveals dilated empty rectum with tenderness.Reference : page 967 and 952 SRB's manual of surgery 5th edition |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anaesthesia | Characteristics of Remifentanyl – a) Metabolised by plasma esteraseb) Short half lifec) More potent than Alfentanyld) Dose reduced in hepatic and renal diseasee) Duration of action more than Alfentanyl
Select and explain.
A. ab, B. bc, C. abc, D. bcd | C: abc | Answer: C: abc
Explanation: Remifentanil is the shortest acting opioid due to its metabolism by plasma esterase → dose adjustment is not needed in liver or kidney disease. It is more potent than alfentanil : Order of potency is Sufentanil > Fentanyl = Remifentanil > Alfentanil. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry | Hypomimia is ?
Select and explain.
A. Decreased ability to copy, B. Decreased execution, C. Deficit of expression by gesture, D. Deficit of fluent speech | C: Deficit of expression by gesture | Answer: C: Deficit of expression by gesture
Explanation: Ans. C. Deficit of expression by gestureHypomimiaHypomimia or amimia is a deficit or absence of expression by gesture or mimicry.This is usually most obvious as a lack of facial expressive mobility (mask - like facies).This is a feature of frontal subcoical disease. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology | Naglers reaction is shown by
Select and explain.
A. Clostridium tetani, B. Clostridium botulinum, C. Clostridium perfringens, D. Clostridium septicum | C: Clostridium perfringens | Answer: C: Clostridium perfringens
Explanation: Nagler's reaction - when Clostridium perfringens is grown in media containing 6 % agar, 5% Fildes peptic digest of sheep blood and 20% human serum, with antitoxin spread on one half of plate, colonies in the other half without antitoxin will be surrounded by a zone of opacity. No opacity around the colonies on the half of plate with antitoxin, this is due to the specific neutralization of the alpha-toxin. This specific lecithinase effect, known as the Nagler's reaction. Reference: Textbook of Microbiology; Anathanarayan and paniker's; 10th edition; Page no: 263 |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine | Which of the following statements are True/False? 1. Hirsutism, which is defined as androgen-dependent excessive male pattern hair growth, affects approximately 25% of women. 2. Virilization refers to a condition in which androgen levels are sufficiently high to cause additional signs and symptoms. 3. Frequently, patients with growth hormone excess (i.e., acromegaly) present with hirsutism. 4. A simple and commonly used method to grade hair growth is the modified scale of Ferriman and Gallwey. 5. Scores above 8 suggest excess androgen-mediated hair growth.
Select and explain.
A. 1, 2, 3 True & 4, 5 false, B. 1, 3, 5 True & 2, 4 false, C. 2, 4, 5 True & 1, 3 false, D. 1, 2, 3, 4 True & 5 false | C: 2, 4, 5 True & 1, 3 false | Answer: C: 2, 4, 5 True & 1, 3 false
Explanation: Here statement 1 & 3 are wrong. It is actually a direct pick from harrison, an impoant topic for entrance examinations hirsutism is seen in 10% of woman. Acromegaly rarely causes hirsutism. Ref: Harrisons Principles of Medicine, 18th Edition, Pages 380-382 |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy | The pharmakokinetic change occurring in geriatric patient is due to
Select and explain.
A. Gastric absorption, B. Liver metabolism, C. Renal clearance, D. Hypersensitivity | C: Renal clearance | Answer: C: Renal clearance
Explanation: One of the most impoant pharmacokinetic changes associated with aging is decreased renal elimination of drugs. After age 40, creatinine clearance decreases an average of 8 mL/min/1.73 m2/decade; however, the age-related decrease varies substantially from person to person. Serum creatinine levels often remain within normal limits despite a decrease in GFR because older adults generally have less muscle mass and are generally less physically active than younger adults and thus produce less creatinine. Maintenance of normal serum creatinine levels can mislead clinicians who assume those levels reflect normal kidney function. Decreases in tubular function with age parallel those in glomerular function. Refer katzung 11/e p1039 |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: general microbiology, Subject name: Microbiology | True regarding lag phase is?
Select and explain.
A. Time taken to adpt in the new environment, B. Growth occurs exponentially, C. The plateau in lag phase is due to cell death, D. It is the 2nd phase in bacterial growth curve | A: Time taken to adpt in the new environment | Answer: A: Time taken to adpt in the new environment
Explanation: Lag phase: Immediately following the seeding of a culture medium, there is no appreciable number, though there may be an increase in the size of the cells. This initial period is the time required for the adaptation to the new environment, during which the necessary enzymes and metabolic intermediates are built up in adequate quantities for multiplication to proceed. The duration of the lag phase varies with the species, sizes of the inoculation, nature of the culture media and the environmental factors such as temperature REF:Ananthanarayan & Panicker's Textbook of Microbiology 8th edition pg no: 24 |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery | A 60 yr old chronic smoker presents with painless gross hematuria of 1 day duration. Investigation of choice to know the cause of hematuria
Select and explain.
A. USG, B. X-ray KUB, C. Urine routine, D. Urine microscopy for malignant cytology cells | D: Urine microscopy for malignant cytology cells | Answer: D: Urine microscopy for malignant cytology cells
Explanation: Urine microscopy for malignant cytology "Painless haematuria is by far the most common symptom of bladder cancer and should be regarded as indicative of a bladder carcinoma until proven otherwise." Bailey & Love 25/e p1336 (24/e p1363) Cigarette smoking is the main etiological factor and accounts ,for about 50% of bladder cancers Among the given options 'urine microscopy' is the best choice for investigating a pt. with high suspicion for bladder ca. This is not a good screening test but a positive result is highly specific. The best investigation would be cystoscopy & biopsy. Investigations for bladder cancer 1. Urinary cytology - Exfoliated cells from both normal and neoplastic urothelium can be readily identified in voided urine. Examination of cytological specimens can detect the malignant cells either at the time of initial presentation or during follow-up. Cytological examination may be especially useful in screening high-risk population and assessing the response to treatment. 2. Cystourethroscopy and tumor resection - The diagnosis and initial staging of bladder cancer is made by cystoscopy and transurethral resection. 3.Imaging (IVP, CT, MRI) - Although various imaging techniques can detect bladder cancer, its presence is confirmed by cystoscopy & biopsy. - Therefore imaging modalities are used to image the upper urinary tract and, when infiltrating bladder tumors are detected to assess the depth of muscle wall infiltration and the presence of local & distant metastasis. - Intravenous urography remains one of the most common imaging tests for the evaluation of hematuria. However, intravenous pyelography is increasingly being replaced by computed tomography (CT) urography, which is more accurate, for evaluation of the entire abdominal cavity, renal parenchyma, and ureters in patients with hematuria. Bladder tumors may be recognized as pedunculated, radiolucent filling defects projecting into the lumen; nonpapillary, infiltrating tumors may result in fixation or flattening of the bladder wall. 4. Urinary tumor markers - - Several new tests have been developed in order to overcome the shocomings of urinary cytology such as the low sensitivity for low-grade superficial tumors and inter-observer variability. - Commercially available tests include, the BTA test, the BTA stat test, the BTA TRAK assay determination of urinary nuclear matrix protein (NMP22), Immunocyt and UroVysion . - These tests can detect cancer specific proteins in urine (BTA/NMP22) or augment cytology by identifying cell surface or cytogenetic markers in the nucleus. Other tests under investigation include identification of the Lewis X antigen on exfoliated urothelial cells, and the determination of telomerase activity in exfoliated cells. - These tests have been demonstrated to enhance detection of bladder cancer when used either individually or in combination with cytology. They have been used to detect both new index tumors as well as recurrent tumors. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology | With which of the following receptors theophylline has an antagonistic interaction ?
Select and explain.
A. Histamine receptors, B. Bradykinin receptors, C. Adenosine receptors, D. Imidazoline receptors | C: Adenosine receptors | Answer: C: Adenosine receptors
Explanation: None |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy | Hyper viscosity is seen in
Select and explain.
A. Cryoglobulinemia, B. Multiple myeloma, C. MGUS, D. Lymphoma | A: Cryoglobulinemia | Answer: A: Cryoglobulinemia
Explanation: Ref William hematology 6/e p1268 The term cryoglobulinemia refers to the presence in the serum of proteins that precipitate at temperatures below 37 degrees C and redissolve on rewarming. ... The elective treatment for hyperviscosity syndrome, whether associated with monoclonal, mixed, or polyclonalcryoglobulinemia, is plasma exchange. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Biostatistics, Subject name: Social & Preventive Medicine | For a positively skewed curve which measure of central tendency is largest
Select and explain.
A. Mean, B. Mode, C. Median, D. All are equal | A: Mean | Answer: A: Mean
Explanation: A distribution is negatively skewed, or skewed to the left, if the scores fall toward the higher side of the scale and there are very few low scores. In positively skewed distributions, the mean is usually greater than the median, which is always greater than the mode. Ref : |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental | The process of hardening a cement matrix through hydration with oral fluids to achieve greater mechanical strength is known as:
Select and explain.
A. Maturation, B. Setting, C. Hardening, D. Mineralization | A: Maturation | Answer: A: Maturation
Explanation: Maturation (cement)—The process of hardening a cement matrix through hydration with oral fluids to achieve greater mechanical strength.
Ref: Phillip’s Science of Dental Materials ed 12 pg 309 |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Embryology, Subject name: Anatomy | Superior vena cava is derived from:
Select and explain.
A. Aortic arch, B. Pharyngeal arch, C. Cardinal vein, D. Vitelline vein | C: Cardinal vein | Answer: C: Cardinal vein
Explanation: Ans. C Cardinal veinRef; hangman's essesntial medical Embroyology pg. 57# During early embryonic development (through 4th week), paired cardinal veins drain the body. Anterior cardinal veins drain the head and upper limb buds, while posterior cardinal veins drain the body. Both the anterior and posterior veins on each side unite at the common cardinal veins that flow into the sinus venosus and ultimately into the common atrium (Image).# Anterior cardinal veins are retained. An anastomosis between the two forms the left brachiocephalic vein, and anterior segments from both form the jugular system for the head and neck (Image).# Most of the posterior segment on the left disappears except for that forming the left superior intercostal vein, whereas the right posterior segment forms the superior vena cava.Extra mileDefects of SVC Development* Double inferior vena cava occurs when the left supracardinal vein persists, thereby forming an additional inferior vena cava below the level of the kidneys.* Left superior vena cava occurs when the left anterior cardinal vein persists, forming a superior vena cava on the left side. The right anterior cardinal vein abnormally regresses.* Double superior vena cava occurs when the left anterior cardinal vein persists, forming a superior vena cava on the left side. The right anterior cardinal vein also forms a superior vena cava on the right side. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Testis & Scrotum, Subject name: Surgery | Testicular artery usually arises from
Select and explain.
A. Abdominal aorta below renal artery, B. Renal artery, C. Internal iliac artery, D. Ext iliac artery | A: Abdominal aorta below renal artery | Answer: A: Abdominal aorta below renal artery
Explanation: Ans) a (Abdominal aorta ....) Ref Chaurasia vol 2 pg 186Testicular artery is a branch of abdominal aorta given off at the level of vertebrae L2.Venous drainageVeins emerging from the testis forms pampiniform plexus. Plexus condenses into 4 veins at the superficial inguinal ring & into 2 veins at the deep inguinal ring.Ultimately one vein is formed which drains into IVC (on right side) or left renal vein (on left side). |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: ENT | Position of vocal cord in cadaver is:
Select and explain.
A. Median, B. Paramedian, C. Intermediate, D. Full Abduction | C: Intermediate | Answer: C: Intermediate
Explanation: The vocal fold of the excised larynx is known to be located at an intermediate position(the so-called cadaver position). |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology | Organisms that has not been cultured successfully so far is-
Select and explain.
A. Leptospira, B. Treponema pallidum, C. Bordetella, D. Staphylococcus | B: Treponema pallidum | Answer: B: Treponema pallidum
Explanation: None |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Non communicable diseases, Subject name: Social & Preventive Medicine | Normal waist hip ratio of a female is below
Select and explain.
A. 0.7, B. 0.8, C. 0.9, D. 1 | B: 0.8 | Answer: B: 0.8
Explanation: WHO CUT-OFF POINTS OF WHR Indicator CUT-OFF points Risk of metabolic complications Waist circumference >94 cm (M) >80 cm (W) Increased Hip cirrcumference >102 cm (M) >88 cm (W) Substantially increased Waist-Hip ratio >= 0.95(M) >= 0.80(W) Substantially increased Ref: Park 23rd edition Pgno : 400 WC & WHR, WHO Consultation 2008 |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney, Subject name: Medicine | The most common cause of renal scaring in a 3 year old child is -
Select and explain.
A. Trauma, B. Tuberculosis, C. Vesicoureteral reflux induced pyelonephritis, D. Interstitial nephritis | C: Vesicoureteral reflux induced pyelonephritis | Answer: C: Vesicoureteral reflux induced pyelonephritis
Explanation: Chronic pyelonephritis is characterized by renal inflammation and scarring induced by recurrent or persistent renal infection, vesicoureteral reflux, or other causes of urinary tract obstruction. VUR is a congenital condition that results from incompetence of the ureterovesical valve due to a sho intramural segment Ref Harrison20th edition pg 234 |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Poisoning, Subject name: Forensic Medicine | A 6hours old snake bite patient comes to emergency with mild local edema at the injury site. On examination no abnormalities detected and lab repos are normal. Most appropriate management is
Select and explain.
A. Incision and suction, B. Wait and watch, C. Local subcutaneous antisnake venom, D. Intravenous antisnake venom | B: Wait and watch | Answer: B: Wait and watch
Explanation: All patients with a history of snake bite should be observed for 8-12 h after the bite, if the skin is broken and the offending snake cannot be positively identified as non-poisonous. Ref: Krishnan vij ; 5th ed; Page no: 484 |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics | Which of the following agents is most commonly associated with recurrent meningitis due to CSF leaks?
Select and explain.
A. Meningococci, B. Pneumococci, C. Hemophilus Influenza, D. E. Coli | B: Pneumococci | Answer: B: Pneumococci
Explanation: Intracranial CSF leaks cause bacterial meningitis, about 80% are caused by S. Pneumoniae. Other causative organisms are meningococcus, Hemophilus species and S.aurues. Ref: Clinical Pediatric Neurology By Ronald B. David, Page 217 |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Facial Nerve And Its Disorders, Subject name: ENT | Treatment of choice in traumatic facial nerve injury is:
Select and explain.
A. Facial sling, B. Facial nerve repair, C. Conservative management, D. Systemic corticosteroids | B: Facial nerve repair | Answer: B: Facial nerve repair
Explanation: (b) Facial nerve repair(Ref. Scott Brown, 6th ed., 1404)Since generally following trauma the facial nerve injury occurs as sudden onset. Facial decompression should be the best option. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine | What is the best method of informing the rural population about Oral rehydration technique: March 2013 (d, f)
Select and explain.
A. Chalk and talk/Lecture, B. Demonstrations, C. Role play, D. Flash cards | B: Demonstrations | Answer: B: Demonstrations
Explanation: Ans. B i.e. Demonstrations Demonstration involves showing by reason or proof explaining or making clear by use of examples or experiments. Put more simply, demonstration means to clearly show |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy | Lymph vessel which drain the posterior 1/3 rd of the tongue:
Select and explain.
A. Basal vessel., B. Marginal vessel., C. Central vessel., D. Lateral vessel. | A: Basal vessel. | Answer: A: Basal vessel.
Explanation: None |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anaesthesia | Risk factors associated with post-operative nausea and vomiting following strabismus surgery are all except -
Select and explain.
A. Age < 3years, B. Duration of anesthesia > 30 mins, C. Personal or family history of post - op nausea and vomiting, D. Personal or family history of motion sickness | A: Age < 3years | Answer: A: Age < 3years
Explanation: Ans. is 'a' i.e., Age < 3 years Post operative nausea and vomiting (PONY) following strabismus surgery It can cause post - op wound dehiscence, hematoma, orbital hemorrhage and aspiration. 30 % of all procedures are associated with PONV. Major risk factors are: Age > 3years Duration of anesthesia > 30 mins Personal or family history of post - op nausea and vomiting Personal or family history of motion sickness Medical management of PONV includes: dimenhydrinate, metoclopramide, droperidol, dexamethasone, ondansatron |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Orthopaedics | All are True about Acute Osteomyelitis except
Select and explain.
A. Common in children, B. Severe pain, C. Involves Epiphyseal plate, D. Treatment involves 6 weeks of Antibiotics | C: Involves Epiphyseal plate | Answer: C: Involves Epiphyseal plate
Explanation: None |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Spos Injury, Subject name: Orthopaedics | Anterolateral ahroscopy of knee is for:
Select and explain.
A. To see patellofemoral aiculation, B. To see the posterior cruciate ligament, C. To see the anterior poion of lateral meniscus, D. To see the periphery of the posterior horn of medial meniscus | A: To see patellofemoral aiculation | Answer: A: To see patellofemoral aiculation
Explanation: Standard poals in knee ahroscopy Anterolateral poal Almost all the structures within the knee joint can be seen except- posterior cruciate ligament anterior poion of the lateral meniscus periphery of the posterior horn of the medial meniscus in tight knees. Anteromedial poal Additional viewing of lateral compament Posteromedial poal Used for viewing the posteromedial structures For repair or removal of the displaced posterior horn of meniscal tears Superolateral poal Used for diagnostically viewing the dynamics of patella-femoral joint, excision of medial plica. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Obs), Subject name: Gynaecology & Obstetrics | Regarding vaginal candidiasis which one of the following is false:
Select and explain.
A. Cottage cheese like secretions are seen, B. Intense pruritus, C. Most common in non-pregnant women, D. Buds and hyphae seen in KOH preparation | C: Most common in non-pregnant women | Answer: C: Most common in non-pregnant women
Explanation: Ans. C. Most common in non-pregnant womenCandidiasis is caused by Candida albinism which thrives in an acidic medium with an abundant supply of carbohydrates. It is found commonly in pregnancy, and in patients on oral contraceptives, antibiotics and. corticosteroids. It is also seen in patients with diabetes. It causes a profuse discharge and intense pruritus with soreness of vagina and dysuria. Vagina and vulva are edematous and excoriated and the white patches of cheesy material on the vagina and vulva can be easily identified. A 10%KOH smear shows the buds and hyphae of the Candida organism. Nystatin or ketoconazole vaginal tablets used for one week are curative when used along with a cream of the same medication for External use. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Radiology | 25 year old patient Suspected to have a pneumoperitoneum. Patient is unable to stand. Best x-ray view is
Select and explain.
A. Left lateral decubitus view, B. Right lateral decubitus view, C. Supine, D. Prone | A: Left lateral decubitus view | Answer: A: Left lateral decubitus view
Explanation: Left lateral decubitus view demonstrates the air between dense shadow of liver and the abdominal wall. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mycology, Subject name: Microbiology | What is the most probable poal of entry of Aspergillus?
Select and explain.
A. Puncture wound, B. Blood, C. Lungs, D. Gastrointestinal tract | C: Lungs | Answer: C: Lungs
Explanation: Aspergillus species are widely distributed on decaying plants, producing chains of conidia. Aspergillus species unlike Candida species do not form the pa of normal flora of humans. They are ubiquitous in the environment; hence transmission of infection is mostly exogenous. Aspergillus transmission occurs by inhalation of airborne conidia. Risk Factors for invasive aspergillosis are: Glucocoicoid use (the most impoant risk factor) Profound neutropenia or Neutrophil dysfunction Underlying pneumonia or COPD, tuberculosis or sarcoidosis Antitumor necrosis factor therapy. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics | For TOF management in antenatal period includes ?
Select and explain.
A. Balloon valvotomy, B. Open hea surgery, C. Karyotyping, D. Aspirin | C: Karyotyping | Answer: C: Karyotyping
Explanation: Ans. is 'c' i.e., KaryotypingTOF has been associated with untreated maternal diabetes, phenylketonuria, and intake of retinoic acid.Associated chromosomal anomalies occur in 30% cases and include trisomies 21, 18, 13 and 22q11 microdeletion, especially in pulmonary atresia and absent pulmonary valve syndrome (APVS).There is also a high association with extra - cardiac anomalies in paicular, abdominal and thoracic abnormalities.When a TOF is diagnosed during fetal life, karyotyping and targeted morphologic ultrasound examination should be offered.Isolated TOF - Good prognosis in TOF with pulmonary stenosis (>90% survival after surgery).However, other forms of TOF such as pulmonary atresia and absent pulmonary valve syndrome do not have a good prognosis (moderate prognosis for pulmonary atresia and bad prognosis for APVS). |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy of Bone & Fracture Healing, Subject name: Orthopaedics | What change will be seen in vertebral column in ochronosis-
Select and explain.
A. Calcification of disc, B. Bamboo spine, C. Increased disc space, D. None | A: Calcification of disc | Answer: A: Calcification of disc
Explanation: Ans. is 'a' i.e., Calcification of discAlkaptonuria# It is due to deficiency of homogentisate oxidase. As a result homogentisic acid (homogentisate) is excreted execessively in urine, There are three important characteristic features in alkaptonuria-Urine becomes dark after being exposed to air. It is due spontaneous oxidation of homogentisate into benzoquinone acetate, which polvmerse to form black-brown pigment alkapton which imparts a characteristic black-brown colour to urine.Alkapton deposition occurs in sclera, ear, nose, cheeks and intervertebral disc space. A condition called ochronosis. There may be calcification of intervertebral discs.Onchronosis arthritis affecting shoulder, hips, knee.# Benedict's test is strongly positive in urine and so is the ferric chloride (FeClyl test. Benedict's reagent gives a greenish brown precipitate with brownish black supematent. Feh ling's reagent (FeClj gives blue green colour. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental | If solid line represent the rigid height, then the following diagram with excessive inter arch space is classified in?
Select and explain.
A. Class - 1, B. Class - 2, C. Class - 3, D. Class - 4 | B: Class - 2 | Answer: B: Class - 2
Explanation: None |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine | Pearsonian measure of skewness -
Select and explain.
A. Mode - Mean/ SD, B. Mean - Mode/ SD, C. SD/Mode - mean, D. Mean - Mode/ SD | B: Mean - Mode/ SD | Answer: B: Mean - Mode/ SD
Explanation: Ans. is b' i.e., Mean-Mode Measures of Skewness o There are following measures of skewness 1. Karl pearson's measure The formula for measuring skewness is divided into a) absolute measure Skewness = Mean - Mode b) relative measure The relative measure is known as the Coefficient of Skewness and is more frequently used than the absolute measure of skewness. Fuher, when a comparison between two or more distributions is involved, it is the relative measure of Skewness which is used. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology | Following are the causes of sudden loss of vision except ?
Select and explain.
A. Angle closure glaucoma, B. Endophthalmitis, C. Central serous retinopathy, D. Corneal ulceration | D: Corneal ulceration | Answer: D: Corneal ulceration
Explanation: Ans. is 'd' i.e., Corneal ulceration |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy | All of the following are features of Lymph node histology except
Select and explain.
A. Subcapsular sinus present, B. Both Efferent and Afferent are present, C. Coex and Medulla are present, D. Red pulp and White pulp are present | D: Red pulp and White pulp are present | Answer: D: Red pulp and White pulp are present
Explanation: Red pulp and White pulp are present in spleenHistologically, a lymph node is subdivided into three regions: coex, paracoex, and medulla. All three regions have a rich supply of sinusoids, enlarged endothelially lined spaces through which lymph percolates.The afferent lymph vessels pierce the capsule on the convex surface of the node and empty their lymph into the subcapsular sinus. This sinus is continuous with the coical sinuses and delivers the lymph into the medullary sinuses, eventually to enter the efferent lymphatic vessels.Reference: Krishna Garg Histology; 5th edition; Page no: 92 |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cerebrum, Subject name: Anatomy | During Sx for meningioma, the left paracentral lobule was injured. It would lead to paresis of
Select and explain.
A. Rt. Leg and perineus, B. Left face, C. Right face, D. Right shoulder & trunk | A: Rt. Leg and perineus | Answer: A: Rt. Leg and perineus
Explanation: Ans. is 'a' i.e Rt. Leg and perineum Paracentral lobule:On the medial surface of cerebral hemisphere, the U shaped gyrus around the end of the central sulcus is the paracentral lobule.Motor cortex is located in the precentral gyrus on the superolateral surface of the hemisphere and in the anterior part of the paracentral lobule.Stimulation in this area results in movements in the opposite half of the body.The body is represented upside down in this area.A look at the motor homunculus in Ganong will show that the leg and perineum are represented in the paracentral lobule. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Trauma, Subject name: Surgery | Which of the following bacterial meningitis is associated with sudural effusion?
Select and explain.
A. H. influenza, B. Neisseria meningitits, C. Streptococcus pneumonia, D. Enterococcus | A: H. influenza | Answer: A: H. influenza
Explanation: Chronic Subdural Empyema It may be primary infection of subdural space from sinusitis focus causing suppuration and pus formation. It can be complication of the chronic subdural haematoma. It is due to secondary bacterial infection of collected clot/fluid. Infection is from sinusitis scalp (common)/through earlier trauma wound/haematogenous. Commonly Gram positive organisms cause empyema like streptococci (viridans/milleri) but other virulent organisms like Gram negative bacteria (H.influenzae) occasionally can cause. There is coical venous thrombophlebitis and coical infarction. Headache, fever, meningism and convulsions are the features. MRI is ideal than CT to diagnose. Treatment: Antibiotics, craniotomy and drainage; anticonvulsants, ICU care, proper monitoring, regular follow up. Condition has got 10% moality. Ref: SRB's Manual of Surgery 5th edition Pgno : 1097 |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Reversible Cell Injury, Subject name: Pathology | All of the following statements are true regarding hyperophy, except:
Select and explain.
A. Occurs due to synthesis and assembly of additional intracellular components., B. There is an increase in the size of the cells., C. Cells capable of division respond to stress by hyperophy and hyperplasia., D. There is an increase in the number of cells. | D: There is an increase in the number of cells. | Answer: D: There is an increase in the number of cells.
Explanation: The increased size of the cells is due to the synthesis and assembly of additional intracellular structural components. Hyperophy refers to an increase in the size of cells, which results in an increase in the size of the affected organ. Cells capable of division may respond to stress by undergoing both hyperplasia and hyperophy. The hyperophied organ has no new cells, just larger cells. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology | Glucose sympo occurs with:
Select and explain.
A. Na+, B. Ca++, C. K+, D. Cl- | A: Na+ | Answer: A: Na+
Explanation: A i.e. Na+ |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine | All are true about temporal arteritis except -
Select and explain.
A. Can leads to sudden bilateral blindness, B. More corrunon in females, C. Worsen on exposure to heat, D. Mostly affects elderly | C: Worsen on exposure to heat | Answer: C: Worsen on exposure to heat
Explanation: None |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine | Of the various modalities used in the treatment of re-threatening effects of hyperkalemia which one of the following as the most rapid onset of action ?
Select and explain.
A. Hemodialysis, B. Sodium bicarbonate infusion, C. Insulin and glucose infusion, D. Intravenous calcium gluconate | A: Hemodialysis | Answer: A: Hemodialysis
Explanation: None |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Biosynthesis of Fatty Acids and Eicosanoids, Subject name: Biochemistry | In chronic alcoholism the rate limiting component for alcohol metabolism excluding enzymes is/are : (PGI Dec 2008)
Select and explain.
A. NADP, B. NAD+, C. NADPH, D. FADH | B: NAD+ | Answer: B: NAD+
Explanation: Ans : B (NAD+) & C (NADPH) In chronic alcoholism rate limiting component for alcohol metabolism is NAD* & NADPHOxidation of ethanol by alcohol dehydrogenaseQ & NADQ leads to excess production of NADHSome metabolism of ethanol takes place via a cytochrome P450 dependent microsomal ethanol oxidising systme (MEOS) Q involving NADPH & O2:, This system increase in activity in chronic alcoholism & may account for the increased metabolic clearnce in this condition.Ethanol + NADPH + H+ O2 MEOS Acetaldehyde |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other NHPs, Subject name: Social & Preventive Medicine | Minimum level of iodine iodized salt reaching the consumer level according to iodine programme should be:-
Select and explain.
A. 5 ppm, B. 30 ppm, C. 15 ppm, D. 20 ppm | C: 15 ppm | Answer: C: 15 ppm
Explanation: National Iodine deficiency disorder programme , 1992: - National goitre control programme, 1962 is conveed to NIDDCP, 1992 - Impact indicators: Major indicator - Urinary iodine excretion levels ( generally measured in pregnant women over 24hrs) Others - Neonatal hypothyroidism , Goitre - Level of salt iodinisation: 30 ppm at production level 15 ppm at consumer level - Two-in-one salt: 40mcg iodine + 1mg iron/gm of salt MBI kits- Field Test Kits that allow Iodised salt manufacturers, quality controllers, health inspectors, social workers, NGO activists and even school children to assess the amount of iodine in iodised salt. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Concept of Health and Disease, Subject name: Social & Preventive Medicine | True statement regarding specific death rates
Select and explain.
A. Specific for age and sex, B. Identify particular group or groups "at risk" for preventive action, C. Find out cause or disease specific, D. All of the above | D: All of the above | Answer: D: All of the above
Explanation: (A1I of the above) (54- Park 20th)Specific death rates - may be (a) cause or disease specific e.g. TB, cancer, accidents (b) Related to specific groups e.g. age specific, sex specific, age and sex specific etc.* Rates can also be made specific for many others variables such as income, religion, race, housing etc.* Specific death rates can help us to identify particular groups or groups "at risk" for preventive action. They permit comparisons between different causes within the same populations* Specific death rates are obtained mainly in countries in which a satisfactory civil registration system operates and in which a high proportion of death is certified medically. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine | Pre-exposure prophylaxis for rabies is given on days
Select and explain.
A. 0, 3, 7, 14, 28, 90, B. 0, 3, 7, 28, 90, C. 0, 3, D. 0, 7, 28 | D: 0, 7, 28 | Answer: D: 0, 7, 28
Explanation: New recommended regimen/Schedule (New guidelines( Type of prophylaxis Regimen Post exposure Intramuscular Essen Regimen (1-1-1-1-1) Day 0,3,7,14,28 Post exposure intradermal Updated Thai Red Cross Regimen (2-2-2-0-2) Day 0,3,7,28 Post exposure in vaccinated individuals Day 0,3 Pre-exposure prophylaxis Day 0,7,21/28 Minimum potency: 2.5 IU per IM dose Zagreb regimen of rabies Vaccine (Intramuscular Post-exposure) : 1. 4-dose abbreted multisite regimen 2-0-1-0-1 (2 doses on Day 0,1 dose on Day 7, 1 dose on day 21 Ref: Park 25th edition Pgno : 297-298 |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology | Regarding Sjogren's syndrome, all are true except: September 2010
Select and explain.
A. Keratoconjuctivitis sicca, B. Rheumatoid ahritis, C. Epiphora, D. Autoimmune in nature | C: Epiphora | Answer: C: Epiphora
Explanation: Ans. C: Epiphora SjOgren's syndrome (also known as "Mikulicz disease" and "Sicca syndrome", is a systemic autoimmune disease in which immune cells attack and destroy the exocrine glands that produce tears and saliva SjOgren's syndrome can exist as a disorder in its own right (Primary Sjogren's syndrome) or it may develop years after the onset of an associated rheumatic disorder such as rheumatoid ahritis, systemic lupus erythematosus, scleroderma, primary biliary cirrhosis etc. (Secondary SjOgren's syndrome) |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine | Best indicator of antemoum drowning is :
Select and explain.
A. Froth in mouth and nostrils, B. Cutis anserina, C. Washerman's hand, D. Water in nose | A: Froth in mouth and nostrils | Answer: A: Froth in mouth and nostrils
Explanation: A i.e. Fine froth in mouth & nostril |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology | Splenomegaly may be a feature of: March 2013
Select and explain.
A. Megaloblastic anemia, B. Sickle cell anemia, C. Thalassemia, D. G6PD deficiency | B: Sickle cell anemia | Answer: B: Sickle cell anemia
Explanation: Ans. B i.e. Sickle cell anemia Splenomegaly Splenomegaly refers strictly to spleen enlargement, and is distinct from hyperspineism , which connotes overactive function by a spleen of any size. Splenomegaly and hypersplenism should not be confused. Each may be found separately, or they may coexist. Clinically if a spleen is palpable, it means it is enlarged as it has to undergo enlargement by at least two folds to become palpable. However, the tip of the spleen may be palpable in a newborn baby up to 3 months of age Early sickle cell anemia may present with splenomegaly |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Antiplatelets and Fibrinolytics, Subject name: Pharmacology | Gp2b3A inhibitors are all except -
Select and explain.
A. Abciximab, B. Eptifibatide, C. Tirofiban, D. Prasugrel | D: Prasugrel | Answer: D: Prasugrel
Explanation: Ans. is 'd' i.e., Prasugrel Glycoproteins lIb / IIIa inhibitorso The platelet glycoprotein mediates platelet aggregation via binding of adhesive proteins such as fibrinogen and Von Willebrand factor.o GP lib / Ilia inhibitors, inhibit platelet aggregation by blocking GPIIb / IlIa.o They are more complete inhibitors than either aspirin or clopidogrel / ticlopidinejj because they inhibit final pathway in platelet aggregation (whether it is mediated by ADP or TXA2), while aspirin blocks only TXA2 pathway and clopidogrel blocks only ADP pathway,o Drugs are -o In addition to inhibiting Gp lib / Ilia receptor, abciximab also inhibits ay(33 receptor (which binds vitronectin) and amb2 (a leukocyte integerin). This action is responsible for anti-inflammatory and antiproliferative properties of abciximab. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine | True of case control studies -
Select and explain.
A. It proceeds from cause to effect, B. Odds ratio can be calculated, C. Incidence can be calculated, D. Needs many patients | B: Odds ratio can be calculated | Answer: B: Odds ratio can be calculated
Explanation: None |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry | All of the following could include the mechanism or function of oxigenases, EXCEPT:
Select and explain.
A. Incorporate 2 atoms of oxygen, B. Incorporate 1 atom of oxygen, C. Required for hydroxylation of steroids, D. Required for carboxylation of drugs | D: Required for carboxylation of drugs | Answer: D: Required for carboxylation of drugs
Explanation: Carboxylation is a function of carboxylase enzymes which belong to the class of 'Ligases'. It is not a function of oxygenase enzymes. Monoxygenases incorporate one atom of oxygen and play an impoant role in hydroxylation of steroids. Dioxygenases incorporate 2 atoms of oxygen into the substrate. Ref: Harper's Illustrated Biochemistry 27th Edition, Page 96, 97; Enzyme Assays: High-Throughput Screening, Genetic Selection and Fingerprinting edited by Jean-Louis Reymond, 2006, Page 85. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine | According to recent SC judgment, doctor can be charged for medical negligence under 304-A, only if: AIIMS 12
Select and explain.
A. He is from corporate hospital, B. Negligence is from inadveent error, C. Simple negligence, D. Gross negligence | D: Gross negligence | Answer: D: Gross negligence
Explanation: Ans. Gross negligence |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology | Which of the following is very difficult to induce antibody -
Select and explain.
A. Polysaccharide, B. Protein, C. Antigen, D. Effector | A: Polysaccharide | Answer: A: Polysaccharide
Explanation: An antigen is any substance that causes an immune system to produce antibodies against it. Antigens are usually peptides, polysaccharides or lipids. In general, molecules other than peptides (saccharides and lipids) qualify as antigens but not as immunogens since they cannot elicit an immune response on their own. Ref: Ananthanarayan & Panikers textbook of microbiology 9th edition pg:88 |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiology, Subject name: Social & Preventive Medicine | Prevalence is a:
Select and explain.
A. Rate, B. Ratio, C. Propoion, D. None of the above | C: Propoion | Answer: C: Propoion
Explanation: Tools of measurement in epidemics: - Rate = x 1000/ 10000/ 100000 ; a is pa of b - Ratio = a/b ; a is not a pa of b - Propoion = x 100 = % ; a is pa of b Prevalence = No. of all current cases of a disease at a time /Estimated total population at that time X 100 Hence, Prevalence is a propoion (Prevalence is NOT a Ratio): Numerator is a pa of denominator & is always expressed in percentage. Incidence is rate. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General, Subject name: Medicine | S2 is best appreciated in -
Select and explain.
A. 3rd left intercostal space, B. 2nd right intercostal space, C. 4th left intercostal space, D. 5th left intercostal space | A: 3rd left intercostal space | Answer: A: 3rd left intercostal space
Explanation: Ans. is 'a' i.e., 3rd left intercostal space o Best areas to auscultate for both components of the second heart sound (A2 and P2) are either the left sternal border at the level of second intercostal space (Pulmonic area) or the left sternal border at the level of third intercostal space (Erb s point). |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Congenital Dislocation of Hip (C.D.H.), Subject name: Orthopaedics | Position of limb in posterior dislocation of hip -
Select and explain.
A. Flexion, abduction & external rotation, B. Flexion, adduction & internal rotation, C. Flexion, adduction & external rotation, D. Flexion, abduction & internal rotation | B: Flexion, adduction & internal rotation | Answer: B: Flexion, adduction & internal rotation
Explanation: Ans. is 'b' i.e., Flexion, adduction & internal rotation Hip conditionDeformitySynovitisArthritisPosterior dislocationAnterior dislocationFemoral neck fractureIntertrochantric fractureFlexion, abduction, external rotation, apparent lengtheningFlexion, adduction, internal rotation, true shorteningFlexion, adduction, internal rotation, apparent & true shorteningFlexion, abduction, external rotation, true lengtheningExternal rotation, later adduction & flexionMarked external rotation, later adduction & flexion |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Complications Of Anaesthesia, Subject name: Anaesthesia | Drug causing malignant hyperthermia:(Asked twice in the exam)
Select and explain.
A. Cisatracurium, B. Suxamethonium, C. Propofol, D. Thiopentone | B: Suxamethonium | Answer: B: Suxamethonium
Explanation: Ans. b. SuxamethoniumSuxamethonium is the drug most commonly responsible for causing malignant hyperthermia.'Drugs causing malignant hyperthermia are- succinylcholine (most common cause), halothane (MC inhalational agent), iso/des/sevo/methoxy- fluranes, lignocaine, TCA, MAO inhibitors and phenothiazines.''Thiopentone and pancuronium are protective drugs for malignant hyperthermia, as these raise the triggering threshold.''In malignant hyperthermia susceptible patients, safe anesthetics are N2O, Non-depolarizing muscle relaxants (atracurium), opiates, tranquilizers, etomidate, barbiturates (thiopentone) and propofol.'Malignant Hyperthermia* Autosomal dominant genetic disorder of skeletal muscle* Occurs in susceptible individuals due to exposure to some triggering agents, typically Suxamethonium or volatile agents, which cause an abnormal increase in intracellular calcium.* It is caused by dysregulation of excitation-contraction coupling in skeletal muscle.Triggering Agents:* Succinylcholine (most common cause)* Halothane (MC inhalational agent)* Halogenated Anesthesia:- Fluranes: Isoflurane, desflurane, sevoflurane. methoxy-flurane- Ether- Cyclopropane* Lignocaine* TCA* MAO inhibitors* PhenothiazinesClinical Features:* Rise in end tidal CO2 (1st sign)* Masseter muscle rigidity (MMR) and tachycardia are earliest sign* Hypermetabolic features, metabolic acidosis, fever, hyperthermia* Sympathetic over activity: Tachycardia, arrhythmia, unstable BP. initial hypertension* Muscle damage: Masseter muscle spasm, generalized rigidity, hyperkalemiaTretment:* Triggering agent must be stopped and hyperventilate with 100% oxygen* The mainstay of therapy is immediate administration of IV dantrolene.* Dantrolene is the only drug effective in reversing the symptoms and preventing the episode. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Environment and Health, Subject name: Social & Preventive Medicine | Household insectiside used for malaria-
Select and explain.
A. Malathion, B. Pyrethrum, C. Paris green, D. Permethrin | A: Malathion | Answer: A: Malathion
Explanation: Ans. is 'a' i.e., Malathion* Insectisides used for control of malaria are-i) Residual sprapy-# In residual spray, spraying of houses with residual insectisides is done. Residual insectisides remains active over extended periods i.e., they have residual action even after the time of spray.# Commonly used residual insectisides are - Malathion, DDT, Lindane, propoxure (OMS-33).ToxicantDosage in g/m2Average duration of effectiveness (months)DDT1 to 26 to 12Lindane0-53Malathion23OMS-3323ii) Space spray# Space sprays are those where the insecticidal formation is sprayed into the atmosphere in the form of a mist or fog to kill insect. Action is short lived and temporary since there is no residual action.# The most commonly used space spray insecticide is Pyrethrum.# New equipment has been developed to use residual insectiside as space spray by ultra low volume (ULV) technique. Malathions and fenthion are most commonly used. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Anatomy | False about obstructive jaundice
Select and explain.
A. Unconjugated bilirubin, B. Pruritus, C. Pale stools, D. Icterus | A: Unconjugated bilirubin | Answer: A: Unconjugated bilirubin
Explanation: Obstructive jaundice Most common surgical cause of obstructive jaundice is CBD stones Characterized by dark urine, pale coloured stools, icterus and Pruritus Presence of urobilinogen in urine rules out obstructive jaundice USG is the best test to differentiate medical from surgical jaundice Unconjugated bilirubin is normal Ref: Harrison's 19th edition Pg no : 1998 |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Anatomy | All of the following structure lies outside the cavernous sinus except
Select and explain.
A. Sphenoidal air sinus, B. Internal carotid aery, C. Foramen lacerum, D. Maxillary nerve | D: Maxillary nerve | Answer: D: Maxillary nerve
Explanation: structures outside the sinus: 1. Superiorly: optic tract, optic chiasma, olfactory tract, internal carotid aery and anterior perforated substance. 2.inferiorly: foramen lacerum and the junction of the body and greater wing of the sphenoid bone 3.medically: hypophysis cerebri and sphenoidal air sinus 4.laterally: temporal lobe with uncus 5.below laterally: mandibular nerve 6.anteriorly: superior orbital fissure and apex of the orbit 7.posteriorly: apex of the petrous temporal and the crus cerebri of the midbrain Ref BDC volume 3:sixth edition pg 193 |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Intra Uterine Growth Restriction, Intrapaum and Antepaum Fetal Surviellance, Subject name: Gynaecology & Obstetrics | Which of the following is the best procedure done for intrapaum fetal monitoring:
Select and explain.
A. Fetal echocardiography, B. Fetal scalp pH, C. Continuous electrical fetal hea monitoring, D. Physical examination | C: Continuous electrical fetal hea monitoring | Answer: C: Continuous electrical fetal hea monitoring
Explanation: Electrical Fetal hea monitoring is useful as: (1) Provides accurate information, (2) Helpful in diagnosing fetal distress, (3) Directs about intervention to prevent fetal death or morbidity, (4) It is superior to intermittent monitoring methods. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology | Which of the following is measured by the device, Bellow's spirometer?
Select and explain.
A. TLC, B. RV, C. Closing volume, D. ERV | D: ERV | Answer: D: ERV
Explanation: The spirometer is a simple device for measuring gas volumes. The frequently used water spirometer, rolling seal spirometer and bellows spirometer. The last two are not water-filled and are more poable. The VT, IRV, ERV, IC, and VC can all be measured with a spirometer (as can the forced expiratory volume in 1 second , forced vital capacity , and forced expiratory flow ). The RV, the FRC, and the TLC, however, cannot be determined with a spirometer because the subject cannot exhale all the gas in the lungs. The lung volumes not measurable with spirometry can be determined by the nitrogen-washout technique, by the helium-dilution technique, and by body plethysmography. The FRC is usually determined, and RV (which is equal to FRC minus ERV) and the TLC (which is equal to VC plus RV) are then calculated from volumes obtained by spirometry. Ref: Levitzky M.G. (2007). Chapter 3. Alveolar Ventilation. In M.G. Levitzky (Ed), Pulmonary Physiology, 7e. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Enterobecteriaceae, Subject name: Microbiology | Which of the following is a newly emerging food poisoning organism
Select and explain.
A. Salmonella typhimurium, B. Enterococcus, C. Diphtheria, D. Pseudomonas | A: Salmonella typhimurium | Answer: A: Salmonella typhimurium
Explanation: Ans: a (Salmonella typhimurium) Ref: Ananathanarayan,7th ed, p. 303Of the above given, S. typhimurium causes food poisoningSalmonella gastroenteritisS. typhimurium is the most common cause of food poisoning due to salmonella species.Incubation period--6-24 hrsFood poisoning is never caused by S. typhi. Source of transmission: poultry, meat, milk and milk products.C/F-nausea, vomiting, diarrhoea, abdominal cramps, fever.Blood culture is usually negativeNoteS. aureus is the most common cause of food poisoning in the westIP and clinical features of various bacteria causing food poisoiningIncubation period Organism responsible 1- hrs S. aureus-nausea, vomiting, diarrheaB. cereus-nausea, vomiting 8-16 hrs C. perfringes-abdominal cramps, diarrhoea (vomiting rare)B. cereus-abdominal cramps, diarrhoea, vomiting > 16 hrs Vibrio cholera-watery diarrhoeaETEC-watery diarrhoeaEHEC-bloody diarrhoeaSalmonella species-inflammatory diarrhoeaCamphylobacter jej uni-inflammatory diarrhoeaShigella species- dysentryV. parahaemolyticus-dysentry |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology | Atherosclerosis initiation by fibroblast plaque is mediated by injury to ?
Select and explain.
A. Smooth muscle, B. Media, C. Adventitia, D. Endothelium | D: Endothelium | Answer: D: Endothelium
Explanation: Ans. is 'd' i.e., Endothelium The most acceptable hypothesis for the pathogenesis of atherosclerosis is "the response to injury hypothesis". According to this hypothesis, atherosclerosis is a chronic inflammatory response of the aerial wall initiated by injury to endothelium. Pathogenesis of atherosclerosis Following stages occurs in the pathogenesis of Atherosclerosis: Endothelial injury Earliest stages of the development of atherosclerosis are mediated by the inflammatory cascade. Inflammation mediated injury to endothelium is the cornestone in the development of atherosclerosis. After injury, endothelium is activated and there is increased expression of adhesion molecule-VCAM-1 and there is increased permeability to endothelium. TNF is the major cytokine to induce this expression. Migration of leukocytes When VCAM-1 is expressed on endothelium, leukocytes adhere to the endothelium. Leukocytes than cross the endothelial barrier and begin to accumulate in subendothelial intimal space. Macrophages engulf LDL cholesterol and form foam cells - formation of earliest lesion, i.e. fatty streak. Macrophages also form oxygen free radicals that cause oxidation of LDL to yield oxidized LDL (modified LDL). Smooth muscle cell migration and proliferation Inflammatory cells in subendothelial intimal space secrete cytokines, mainly PDGF, TGF-ct and FGF which cause migration of smooth muscle cells from media to subendothelial intimal space as well as their proliferation. Maturation of plaque Smooth muscle cells synthesize extracellular matrix (especially collegen) and conve a fatty streak into a mature fibrofatty atheroma, and contribute to the progressive growth of atherosclerotic lesions. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology | The WBC that is considered “second line of defence” is:
Select and explain.
A. Neutrophil, B. Eosinophil, C. Basophil, D. Monocyte | D: Monocyte | Answer: D: Monocyte
Explanation: Monocyte is considered as the second line of defence.
Phagocytosis by Macrophages.
Macrophages are the end-stage product of monocytes that enter the tissues from the blood. When activated by the immune system, they are much more powerful phagocytes than neutrophils, often capable of phagocytizing as many as 100 bacteria. They also have the ability to engulf much larger particles, even whole RBCs or, occasionally, malarial parasites, whereas neutrophils are not capable of phagocytizing particles much larger than bacteria. Also, after digesting particles, macrophages can extrude the residual products and often survive and function for many more months.
Reference: GUYTON AND HALL TEXTBOOK OF MEDICAL PHYSIOLOGY, THIRTEENTH EDITION(INTERNATIONAL EDITION ) page no 458 |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Psychiatric Illness, Subject name: Pharmacology | Mark the true statement regarding use of Lithium in maniac-depressive psychosis?
Select and explain.
A. Monotherapy for acute episodes, B. Monitoring of serum concentration is not useful for guiding dose adjustment, C. Can result in leucocytosis, D. Can result in hypehyroidism on long term use | C: Can result in leucocytosis | Answer: C: Can result in leucocytosis
Explanation: Lithium Use : Prophylaxis of mania alone, with sedatives in acute mania. Monitoring of S. concentration is significant to know the toxicity of drug S/E of Lithium Lithium use for a long time causes benign and reversible T-wave flattening Seizures Polyuria and compensatory polydipsia Dermatitis, folliculitis, vasculitis Weight gain |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental | Determination of Pulp vitality by pulse oximeter based on:
Select and explain.
A. Beer's law., B. Pascal's law., C. Doppler law., D. Poisslues law. | A: Beer's law. | Answer: A: Beer's law.
Explanation: Pulse oxymetry-
Based on Beer Lambert law
Utilization of a probe that transmits red (640 mm) and infrared light
Photo detector as a receptor site
Different absorption ability of light by oxygenated and deoxygenated haemoglobin leads to changes in the amount of light differently absorbed by the vascular bed before reaching the photo detector. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery | An Isograft indicates transfer of tissues between -
Select and explain.
A. Unrelated donors, B. Related donors, C. Monozygotic twins, D. From the same individual | C: Monozygotic twins | Answer: C: Monozygotic twins
Explanation: None |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pediatrics | All of the following are causes of congenital blindness Except
Select and explain.
A. Toxoplasmosis, B. Congenital rubella, C. Vitamin A deficiency, D. Cataract | C: Vitamin A deficiency | Answer: C: Vitamin A deficiency
Explanation: Causes of congenital blindness:ToxoplasmosisCongenital cataractsGenetic diseaseCongenital rubellaCongenital glaucomaUsher syndrome(Refer: Nelson's Textbook of Pediatrics, SAE, 1st edition, pg no. 318 - 319) |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology | Hypersecretory glaucoma is seen in –
Select and explain.
A. Epidemic dropsy, B. Marfan's syndrome, C. Hypertension, D. Diabetes | A: Epidemic dropsy | Answer: A: Epidemic dropsy
Explanation: "In epidemic dropsy, glaucoma is wide angle glaucoma, with normal chamber and angle. Outflow is within normal limits. The queous shows raised level of histamin, prostaglandin and protein suggesting that glaucoma is hypersecretory". _ Mukherjee |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Myasthenia Gravis and Muscular dystrophy, Subject name: Medicine | A 14-year-old girl presents with quadriparesis, facial palsy, winging of scapula and ptosis. There is h/o similar illness in father and brother but less severe. Her CPK level is also raised (500IU/L). She is probably suffering from?
Select and explain.
A. Emery-Dreifuss muscular dystrophy, B. Becker muscular dystrophy, C. Limb-girdle dystrophy, D. Scapulofaciohumeral dystrophy | D: Scapulofaciohumeral dystrophy | Answer: D: Scapulofaciohumeral dystrophy
Explanation: Facial muscle involvement is not seen with Becker and Limb-girdle muscular dystrophy Emery Dreifuss and Becker are XLR disease so can't be present in a girl child. Hence by exclusion the diagnosis is Dx: Scapulo-Faciohumeraldystrophy. Facio-Scapulo-humeral dystrophy Autosomal dominant inheritance and has an onset in childhood or young adulthood. Facial weakness is the initial manifestation-->inability to smile, whistle or fully close the eyes. Weakness of the shoulder girdles-->makes arm elevation difficult. Scapular winging becomes apparent with attempts at abduction and forward movement of the arms. The serum CK level may be normal or mildly elevated. No specific treatment is available, ankle-foot ohoses are helpful for foot-drop. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy, Subject name: Ophthalmology | Which of the following is true statement regarding human eye
Select and explain.
A. Cornea cut off wavelength upto 400 nm, B. Normal eye medium will permit wavelength of 400- 700 nm, C. Even after cataract surgery UV rays are not penetrated, D. Lens will not reflect light | B: Normal eye medium will permit wavelength of 400- 700 nm | Answer: B: Normal eye medium will permit wavelength of 400- 700 nm
Explanation: Ans. b (normal rye medium will permit wavelength of 400- 700 ntn) Ref: yanoff 3rd ed p 383, internet sitesCornea and lens act as special filters absorbing the more energetic wavelength of the electromagnetic spectrum that can damage the retina. Cornea absorbs wavelength below 295nm where as lens absorbs strongly in the long U V B (300 - 315) and most of the UV A (315 - 400) wave-lengths. Eye light transmittance is relatively high in the 400nm-700nm range. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery | Which of the following muscle is not a hybrid muscle
Select and explain.
A. Pectoralis major, B. Extensor digitorum, C. Flexor digitorum profundus, D. Brachialis | B: Extensor digitorum | Answer: B: Extensor digitorum
Explanation: Extensor digitorum Hybrid muscles are the muscles having more than one nerve supply Pctoralis major: lateral & medial pectoral nerves Brachialis: additional proprioceptive fibres from radial nerve, in addition to its muscular nerve, musculocutaneous nerve. Extensor digitorum is supplied by the posterior interosseous nerve only. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery | Delayed union of fracture of a bone follo-wing a surgical treatment may be due to
Select and explain.
A. Infection, B. Inadequate circulation, C. Inadequate mobilization, D. All of the above | D: All of the above | Answer: D: All of the above
Explanation: D i.e. All |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory System, Subject name: Physiology | What is the pressure of inspiration?
Select and explain.
A. Intrapleuarl, B. Transpulmonary, C. Trans chest wall, D. Alveolar pressure | A: Intrapleuarl | Answer: A: Intrapleuarl
Explanation: Ans: a (Intrapleural) Ref: Ganong,22nd ed,p. 6651The main pressure in lung related to inspiration is intrapleural pressure.Intrapleural pressure.The pressure in the intrapleural space between the lungs and chest wall is intrapleural pressure.Intrapleural pressure changes from -2.5 to -6 mmHg during inspiration. During strong inspiratory effort it may reach up to -30 mmHg.Transpulmonary pressureIt is the difference between alveolar pressure and intrapleural pressure. It is the measure of elastic forces in the lungs.Alveolar pressure or intrapulmonary pressureIt is the pressure inside the lung alveoli. When no air flows the alveolar pressure is considered to be equal to the atmospheric pressure, i.e., 0 cm of water.During inspiration it decreases to -1 cm of water.During expiration it increases to+1 cm of water. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Biostatistics, Subject name: Social & Preventive Medicine | One standard detion in normal standard curev includes value-
Select and explain.
A. 50%, B. 68%, C. 95%, D. 100% | B: 68% | Answer: B: 68%
Explanation: Ref:Parks 23rd edition pg 849. 1SD : confidence limit = 68% 2SD : confidence limit = 95% 3SD : confidence limit = 99.7% |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology | Foam cells are seen in infection with which virus ?
Select and explain.
A. Measles, B. EBV, C. Molluscum contagiosum, D. RSV | B: EBV | Answer: B: EBV
Explanation: Ans. is 'b' i.e., EBV EBV encephalomyelitis shows :Abnormal white matter with perivascular infiltrates of inflammatory cells and foam cells.Some myelin is replaced by lipid-filled macrophages and hyperplastic astrocytes. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery | During extraction of the upper first molar, the mesio buccal root is missing and is suspected to have been pushed into the maxillary sinus.
The best position for the patient immediately after the incident is
Select and explain.
A. To position the patient upright, B. To position the patients in a semi inclined posture to visualize the perforation, C. Trendelenberg position, D. Reverse trendelenberg position | A: To position the patient upright | Answer: A: To position the patient upright
Explanation: None |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Acute coronary syndrome, Subject name: Medicine | Rescue P.C.I is done for which of the following?
Select and explain.
A. Persistent chest pain with ST elevation > 60 min after thrombolysis, B. Persistent chest pain with ST elevation > 30 min after thrombolysis, C. Persistent Chest pain with ST elevation >90 min after thrombolysis, D. Pain with ST elevation for >120minutes after thrombolysis | C: Persistent Chest pain with ST elevation >90 min after thrombolysis | Answer: C: Persistent Chest pain with ST elevation >90 min after thrombolysis
Explanation: Option C = Rescue P.C.I. After thrombolysis ST Elevation begin to reduce If ST Elevation persisting in spite of thrombolysis. So it's failure of thrombolysis | within 90 minutes Rescue PCI Types of PCI Primary PCI done for STEMI (Door to device time < 90 minutes). Delayed PCI done for Unstable Angina NSTEMI Rescue PCI Failure of thrombolysis (within 90 minutes). |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General physiology, Subject name: Physiology | Fever associated with infection
Select and explain.
A. Accelerates bacterial and viral replication, B. Left shifts the oxygen dissociation curve, C. Is due to interleukin-1 released from CD4 T-helper cells, D. Increase oxygen release to tissue | D: Increase oxygen release to tissue | Answer: D: Increase oxygen release to tissue
Explanation: Fever right shifts the oxygen dissociation curve, which allows for a greater release of oxygen to the tissue, making oxygen easily available to neutrophils and monocytes for use in the oxygen-dependent myeloperoxidase system of bactericidal killing. Having more oxygen available to tissue also enhances wound healing. In addition, fever interferes with bacterial and viral replication by providing a hostile environment for incubation. Fever is produced by the release of interleukin-I from macrophages. Interleukin-I, in turn, stimulates the hypothalamus to synthesize prostaglandins, which interact with the thermoregulatory center to produce fever. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Injuries, Subject name: Forensic Medicine | Last organ to putrefy in females is?
Select and explain.
A. Liver, B. Uterus, C. Brain, D. Breast | B: Uterus | Answer: B: Uterus
Explanation: Ans. is 'b' i.e., Uterus Order of putrefactiono Order of appearance of putrefaction from earliest to last is : larynx, trachea > stomach, intestine > spleen, liver > brain, lungs > heart > kidney, bladder > uterus/prostate > bone.o Amongst the soft tissues uterus in female and prostate in malesm are last to undergo putrefaction, as uterus and prostate resist putrefaction. Otherwise bones are last to undergo putrefaction, overall. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiration, Subject name: Pathology | Hamartomatous lung tissue is?
Select and explain.
A. Hypoplasia of lung, B. Congenital cyst, C. Lobar sequestration, D. Congenital cystic adenomatoid malformation | D: Congenital cystic adenomatoid malformation | Answer: D: Congenital cystic adenomatoid malformation
Explanation: Ans. (d) Congenital cystic adenomatoid malformation(Ref: Robbins 9th/pg 670; 8th/pg 679)Congenital cystic adenomatoid malformation (CCAM): Hamartomatous Q or dysplastic lung tissue, usually confined to one lobe. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteria, Subject name: Microbiology | Test for diagnosis of pyogenic meningitis is?
Select and explain.
A. Widal, B. CSF PCR, C. CSF examination, D. PET scan | C: CSF examination | Answer: C: CSF examination
Explanation: ANSWER: (C) CSF examinationREF: Harrison 17th ed chapter 376The diagnosis of bacterial meningitis is made by examination of the CSF. The need to obtain neuroimaging studies (CT or MRI) prior to LP requires clinical judgment.A broad-range PCR can detect small numbers of viable and nonviable organisms in CSF and is expected to be useful for making a diagnosis of bacterial meningitis in patients who have been pretreated with oral or parenteral antibiotics and in whom Gram's stain and CSF culture are negative |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdominal Radiography, Subject name: Radiology | Causes of thickened gallbladder wall on ultrasound examination are all except:
Select and explain.
A. Postprandial state, B. Cholecystitis, C. Congestive cardiac failure, D. Kawasaki disease | D: Kawasaki disease | Answer: D: Kawasaki disease
Explanation: Ans: D (Kawasaki disease) Ref: Manual of Emergency Critical Care Ultrasound Vicke E Noble. 2nd ed. Pg 156Explanation:Kawasaki disease is associated with hydrops of gallbladder.Gallbladder Wall Thickening A gallbladder wall that is thickened is a sign of inflammation. This is a non-specific finding, and many other pathologic processes, as well as a postprandial gallbladder, can give you falsely elevated measurements.It is important to measure the wall of the anterior gallbladder surface because of the acoustic enhancement artifact mentioned.Because sound waves travel through a fluid-filled structure, no attenuation occurs. Thus, when those sound weaves hit the back of the gallbladder, they will be so strong that they will obscure an accurate picture of the wall thickness.For gallbladder wall thickness, greater than 3 mm is abnormal.Differential for Thickened Gallbladder WallPostprandialRenal failureAscitesHepatitisHypoalbuminemiaHIV/AIDSAdenomyomatosisMultiple myelomaCholecystitisCongestive heart failure |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Assessment of Vestibular Function, Subject name: ENT | In caloric test, cold water stimulation causes movement of eye -
Select and explain.
A. Some side, B. Opposite side, C. Up, D. Do\vn | B: Opposite side | Answer: B: Opposite side
Explanation: Ans. is 'b' i.e., Opposite side [Ref: Dhingra 5th/e p. 48}o Each ear is irrigated twice : once with cold water (70C below the body temperature, i. e. 300C) and then with warm water (70C above the body temperature, i.e. 440C).o Cold water provokes nystagmus towards the opposite ear, while warm water provokes nystagmus towardssame ear (COWS Cold - oppsite, Warm - same). |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine | Which of the following is not false about annual risk of TB
Select and explain.
A. ARI of 1% = 75 new cases, B. Current ARI in India is 1.7%, C. It is represents new cases of TB, D. It is assessed by tuberculin conversion in previously non-vaccinated children | D: It is assessed by tuberculin conversion in previously non-vaccinated children | Answer: D: It is assessed by tuberculin conversion in previously non-vaccinated children
Explanation: Incidence of TB infection (Annual infection rate, Annual risk of Infection ARI) : Percentage of population under study who will be newly infected (not diseased or cases) with TB among Non-infected in 1 year. Expresses attacking force of TB in community In developing countries 1% ARI corresponds to: 50 SS +ve cases per 100,000 general population Tuberculin conversion index is the "best indicator for evaluation of TB problem and its trend" in the community. Current ARI in India : 1.5% Ref: Park 25th edition Pgno : 190-191 |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology | A 12-year-old girl presents to the casualty with symptoms of fever, shoness of breath, and cough. A chest X-ray reveals complete consolidation of the lower lobe of the left lung. Cultures of the lower lobe of the left lung would most likely reveal which organism?
Select and explain.
A. Streptococcus pneumoniae, B. Staphylococcus aureus, C. Klebsiella pneumoniae, D. Pseudomonas aeruginosa | A: Streptococcus pneumoniae | Answer: A: Streptococcus pneumoniae
Explanation: The history and findings are consistent with a lobar pneumonia. The most common etiologic agent of lobar pneumonia is Streptococcus pneumoniae. ESSENTIALS OF DIAGNOSIS Productive cough, fever, rigors, dyspnea, early pleuritic chest pain Consolidating lobar pneumonia on chest radiograph Lancet-shaped gram-positive diplococci on Gram stain of sputum Ref: Papadakis MA, McPhee SJ, "Pneumonia, Pneumococcal." Quick Medical Diagnosis & Treatment |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Skin | IgA deposits on skin biopsy
Select and explain.
A. Henoch Schouleiln puspura, B. Giant cell aeritis, C. Microscopic polyangitis, D. Wegener's granulomatosis | A: Henoch Schouleiln puspura | Answer: A: Henoch Schouleiln puspura
Explanation: A.i.e. Henosch Schonlein purpura |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental | A Dentin 'Primer'?
Select and explain.
A. Etches the dentin, B. It increases the surface energy & wets the dentin surface, C. Removes the smear layer, D. Conditions the dentin | B: It increases the surface energy & wets the dentin surface | Answer: B: It increases the surface energy & wets the dentin surface
Explanation: None |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology | Which of the following hormonal activity is expected immediately prior to Ovulation?
Select and explain.
A. LH surge, B. FSH surge, C. Progestrone surge, D. Estrogen surge | A: LH surge | Answer: A: LH surge
Explanation: Ovulation occurs due to the effect of increased concentration of LH. In the pre-ovulatory phase of the menstrual cycle, the ovarian follicle will undergo a series of transformations called cumulus expansion, which is stimulated by FSH. This is followed by LH surge. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy | Following are fibrous joints :
Select and explain.
A. Pubic symphysis, B. Fronto parietal suture, C. Manubrio sternal joint, D. Inf. radio ulnar joint | B: Fronto parietal suture | Answer: B: Fronto parietal suture
Explanation: B. i.e. Frontoparietal sutureSkull sutures (except sphen-occipital), vomer- sphenoid rostrum schindylesisQ, inferior tibiofibular syndesmosis and dentoalveolar gomphosis (tooth socket) joints are fibrous joints. A Schindylesis is a specialized suture where a rigid bone fits into a groove on a neighbouring element eg a cleft between the alae of vomer, which receives the rostrum of the sphenoid. (i.e. vomer - sphenoidal rostrum junction)Q- Epiphyseo-diaphyseal growth plateQ, costochondral, 1st chondrosternal and sphenoocipital joints are synchondrosis/ syncendrosis or primary cailaginous joints; whereas, symphysis pubis, symphysis menti, sacrococcygeal, interveebral and manubriosternal jointsQ are symphyses or secondary cailaginous joints.Aicular cailage of most (not all) synol joints are lined by hyaline cailage Q. In some synol joints the cavity is paially or completely subdivided into two by an aicular disc, made up of fibrocailage eg. Temporomadibular jt, sternoclavicular jt, menisci of knee joint. More mobile the joint the more commonly it discloates eg shoulder jtQ. MCP Jt. is a condylar - synol joint |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine | For exhumation the order should be passed by -
Select and explain.
A. Chief judicial magistrate, B. Executive magistrate, C. Police officer, D. Session judge | B: Executive magistrate | Answer: B: Executive magistrate
Explanation: The body is exhumed only when, there is written order from the executive magistrate. |
This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Radiology | The radiograph of a 32 year old patient is shown below. The patient is asymptomatic and the lesion revealed in the radiograph is an accidental finding. The most likely diagnosis is:
Select and explain.
A. Stafne’s bone cavity, B. Radicular Cyst, C. Dentigerous cyst, D. Lateral periodontal cyst | A: Stafne’s bone cavity | Answer: A: Stafne’s bone cavity
Explanation: Radiological signs:
The lesion presents as a chance radiographic finding. It is a round or an ovoid (<3 cm) uniform radiolucency with a well-defined, usually corticated, margin. Stafne’s bone cavity is non-expansile and is found below the mandibular canal just anterior to the angle of the mandible. The location of Stafne’s bone cavity distinguishes it from odontogenic lesions, whose origin is within the alveolar bone. |