1103 USMLE QUESTIONS BANK November 16, 2022 1 Min Read 1 USMLE QUESTION BANK USMLE quiz helps us to increase our knowledge Read moreScrape Multiple-Choice Questions from the Web1 / 20 1) 37-year-old previously healthy man is brought to the emergency room for dizziness, chest pain and A palpitations. Cardiac chemistry panel is normal. ECG shows a sloping upstroke of the QRS complex. What is the treatment of choice of this condition? A) Atropine B) Digoxin C) Metoprolol D) Procainamide E) Verapamil Read moreCookie Policy According to ECG findings, this is a case of Wolf-Parkinson-White syndrome. The treatment of choice of this case is procainamide. 2 / 20 2) A 70-year-old man is brought to the doctor having a sudden onset of severe lower back pain. Upon conducting a physical examination of the patient, severe kyphosis is revealed. An x-ray of the back shows a compression fracture in the lumbar area of a vertebral body. This is followed by marked thinning of the bones as well. Laboratory tests measuring serum calcium, alkaline phosphatase, phosphorus, and parathyroid hormone levels, all come back within the normal range. What is the most likely reason behind the bone changes in the patient? A) Osteitis fibrosa cystica B) Osteoporosis C) Osteopetrosis D) Osteomalacia The likely diagnosis for the patient is osteoporosis. This is a condition wherein the bones become fragile and have a higher risk of fracture. In a normal human being, the bone mass or density starts decreasing after 35 years of age. Lack of calcium, vitamin D, exercise, as well as genetics, can increase the risk of having osteoporosis. The diagnosis of osteoporosis can be confirmed by x-rays and tests for measuring bone density. Osteitis fibrosa cystica is a common complication of hyperparathyroidism. Serum calcium and parathyroid hormone should be high which is not the case in this patient. 3 / 20 3) A 26-year-old man presents to the clinic with a complaint of recurrent episodes of bloating, flatulence and diarrhea following eating dairy products. He mentions that he does not experience these symptoms if he does not drink milk or if he is fasting. What is the most likely cause of diarrhea in this patient? A) Inflammatory B) Osmotic C) Psychogenic D) Secretory These symptoms indicate lactase insufficiency, known as lactose intolerance. Presence of non-absorbable osmotically active substance such as lactose in the intestinal lumen leads to osmotic diarrhea. Osmotic diarrhea also occurs after ingestion of magnesium-containing laxatives as Milk of Magnesium. Other types of diarrhea do not subside after fasting or avoiding dairy products which confirm the diagnosis of lactose intolerance. 4 / 20 4) Which one of the following conditions is associated with Acanthosis Nigricans? A) Amyloidosis B) Diabetes insipidus C) Diabetes mellitus D) Hemochromatosis 5 / 20 5) Which one of the following dermatologic disorders presents with a herald batch and a Christmas tree pattern? A) Bullous pemphigoid B) Pemphigus vulgaris C) Pityriasis rosea D) Psoriasis 6 / 20 6) Which one of the following drugs is commonly contributing to hypokalemia? A) Furosemide B) Lisinopril C) Spironolactone D) Verapamil 7 / 20 7) Which one of the following conditions most likely occurs during normal delivery when the shoulders of the baby are impacted behind the maternal bony pelvis? A) Frozen shoulder B) Rotator cuff tear C) Shoulder dystocia D) Tendinitis 8 / 20 8) Which one of the following drugs acts mainly by blocking the synthesis of leukotrienes? A) Cromolyn B) Ipratropium C) Montelukast D) Zileuton 9 / 20 9) Which of the following correctly describes pleiotropy? A) Increased severity of a disease in succeeding generations B) Not all individuals with mutant genotype show the same mutant phenotype C) One gene contributes to multiple phenotypic effects D) Phenotype is always the same among individuals having the same genotype 10 / 20 10) Which of the following medications is considered irreversible alpha receptor antagonist? A) Labetalol B) Phenoxybenzamine C) Prazosin D) Tolazoline 11 / 20 11) Which one of the following blotting procedures is the best for studying mRNA levels? A) Northern blot B) Southern blot C) Southwestern blot D) Western blot Remember it by SNoWDRoP South-DNA, North-RNA and West-Protein. 12 / 20 12) A young man complains of daytime sleeping, cataplexy and sleep paralysis. Which of the following is the best treatment? A) Diazepam B) Hydroxyzine C) Modafinil D) Zolpidem This is a case of narcolepsy. Amphetamine derivative such as modafinil is the best treatment of this case. 13 / 20 13) Which of the following types of protein is encoded by the P53 gene? A) Caspase B) DNA repair enzyme C) Transcription factor D) Tyrosine kinase P53 is a transcription factor regulates apoptosis. It prevents cells from undergoing division. Mutation in it causes uncontrolled cell division. 14 / 20 14) Which of the following medications is useful to distinguish nephrogenic from neurogenic diabetes insipidus? A) Acetazolamide B) Demeclocycline C) Desmopressin D) Hydrochlorothiazide It treats neurogenic DI through selective activation of V2 receptors in the kidney. Nephrogenic DI is treated with thiazides. 15 / 20 15) Which type of hypersensitivity reaction develops from Mycobacterium tuberculosis? A) Type I B) Type II C) Type III D) Type IV A- Anaphylaxis. B- Transfusion reactions, hemolytic anemia and Goodpasture syndrome. C- Serum sickness, Arthus reaction, rheumatoid arthritis and lupus nephritis. 16 / 20 16) Which one of the following liver disorders occurs due to hepatic vein thrombosis? A) Alcoholic hepatitis B) Budd-Chiari syndrome C) Fatty liver D) Pyogenic liver abscess This leads to severe venous congestion due to hepatic vein thrombosis predisposed by neoplasms, pregnancy or polycythemia vera. 17 / 20 17) Which one of the following gastrointestinal conditions is NOT associated with blood in stools? A) Cancer colon B) Diverticulosis C) Irritable bowel syndrome D) Ulcerative colitis 18 / 20 18) In which one of the following locations a mural thrombus commonly occurs following myocardial infarction? A) Left atrium B) Left ventricle C) Right atrium D) Right ventricle E) Thoracic aorta Ischemic heart disease commonly affects the left ventricle. Mural thrombi develop due to damage of the left ventricle. They are common in the right atrium in cases of mitral stenosis. 19 / 20 19) Periumbilical discoloration is found in a patient diagnosed with acute pancreatitis. Which of the following signs is considered positive in this patient? A) Cullen’s sign B) Grey Tunner sign C) Murphy’s sign D) Nikolsky’s sign It is positive if periumbilical discoloration is found in abdominal examination. B- Flank discoloration is also seen in acute pancreatitis. C- It is positive in acute cholecystitis. D- It is positive in pemphigus vulgaris. 20 / 20 20) A 35-year-old office worker complains of pain and numbness over the lateral side of the hand. It is worse at night and may awaken her from sleep. Examination reveals tingling over the median nerve distribution by compressing the opposing dorsal surface of the hand with the wrist flexed. Which of the following is the correct term of this test? A) Coombs test B) ELISA test C) Phalen test D) Tinel test Phalen test- This is a case of carpal tunnel syndrome. Phalen maneuver is performed as explained in the scenario. Tinel test is performed by tapping the ventral surface of the wrist. Both tests lead to tingling over the lateral three and half fingers (the distribution of median n.). Your score is 0% Restart quiz Uncategorized Show Comments Leave a Reply Cancel reply Save my name, email, and website in this browser for the next time I comment. Hover or click the text box below Share Article:
