Usage for hash tag: july2020usmle2ck

#july2020usmle2ck Prazosin blocks which of the following actions of epinephrine? A- Bronchodilation B- High stroke volume C- Mydriasis D- Tachycardia

#july2020usmle2ck Which of the following is the major indication of ondansetron in patients receiving chemotherapy? A- Hair loss B- Nausea and vomiting C- Headache D- GERD

#july2020usmle2ck Bioavailability of a medication is maximal when it has which of the following factors? A- High ionization B- High lipid solubility C- High plasma binding D- High water solubility

#july2020usmle2ck Conversion of ethanol to acetate will result in increase production of which of the following? A- NAD B- NADH C- Oxaloacetate D- Pyruvate

#july2020usmle2ck Which one of the following neoplasms is the most likely related to HIV infection? A- Burkitt’s lymphoma B- Hodgkin’s lymphoma C- Kaposi sarcoma D- Myelocytic leukemia

#july2020usmle2ck Which of the following is the mechanism of action of digoxin to increase cardiac contractility? A- Inhibition of K/Ca ATPase B- Inhibition of Na/Ca ATPase C- Inhibition of Na/K ATPase D- Inhibition of phosphodiesterase

#july2020usmle2ck Which of the following endocrine disorders is characterized by high blood pressure, sodium and water retention, low potassium level and decreased renin activity? A- Addison’s disease B- Pheochromocytoma C- Primary hyperaldosteronism D- Secondary hyperaldosteronism

#july2020usmle2ck The tracheal tube is originated from which of the following structures? A- Ductus arteriosus B- Foregut C- Fourth pharyngeal arch D- Third pharyngeal arch

#july2020usmle2ck Which of the following is the most likely rout of transmission of herpes simplex virus-1? A- Congenital transfusion B- Food contamination C- Respiratory secretions and saliva D- Sexual contact and perinatal

#july2020usmle2ck 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

#july2020usmle2ck Which of the following statements correctly describes the relative risk of a study? A- Odds that the group with a disease was exposed to a risk factor divided by odds that the group without the disease was exposed B- Risk of developing disease in the exposed group divided by...

#july2020usmle2ck Which of the following is the main mechanism of action of methylergonovine in treating postpartum hemorrhage? A- Blocking sympathetic stimulation B- Forceful contraction of myometrium C- Instant blood coagulation D- Strong vasoconstriction

#july2020usmle2ck Alcohol is oxidized in the liver by which one of the following enzymes? A-Alcohol decarboxylase B- Alcohol dehydrogenase C- Alcohol oxidase D- Alcohol reductase

#july2020usmle2ck Which of the following medications acts to prevent cholesterol absorption at small intestine brush border? A- Cholestyramine B- Colestipol C- Ezetimibe D- Gemfibrozil

#july2020usmle2ck Which of the following medications is most likely prescribed in cases of asthma associated with chronic environmental allergies? A- Albuterol inhaler B- Fluticasone nasal spray C- Oral fexofenadine D- Oral montelukas

#july2020usmle2ck A 4-month-old boy is brought to the clinic for a routine examination. Which of the following vaccines should be administered at this visit? A- DTaP B- MMR C- Oral polio vaccine D- Varicella

#july2020usmle2ck Which of the following tests is most likely used to rule out congestive heart failure in a case of cardiomegaly during pregnancy? A- Arterial blood gas B- Echocardiography C- Electrocardiogram (ECG) D- MRI of the chest

#july2020usmle2ck Which of the following is the mechanism of action of metoclopramide? A- α-Adrenoceptor antagonist B- Dopamine D2-receptor antagonist C- Nicotinic receptor antagonist D- Serotonin reuptake reuptake inhibitor (SSRI)

#july2020usmle2ck Which of the following is a contraindication of use of benzodiazepines in anxiety disorder? A- Diabetes mellitus B- Seizures C- Sleep apnea D- Smoking

#july2020usmle2ck Which of the following adverse effects of L-dopa is the most likely the reason to limit the use of it? A- Depression B- Dyskinesia C- Nausea and occasional vomiting D- Orthostatic hypotension