usmle

Q- Which one of the following antibiotics has NO effect on anaerobes? A- Ampicillin B- Clindamycin C- Metronidazole D- Tobramycin   Q- Anemia occurs in cases of multiple myeloma most likely results from which one of the following factors? A- Defective absorption of urine B- Infiltration of bone marrow with massive numbers of plasma cells […]

Q- A patient with HIV history develops fecal urgency and bloody diarrhea. Which of the following is the most likely causative organism? A- Entamoeba histolytica B- Clostridium difficile C- Cytomegalovirus D- Giardia lamblia Q- Which one of the following medications acts at the proximal tubule of the kidney? A- Acetazolamide B- Furosemide C- Hydrochlorothiazide D- […]

Q- Which of the following joint conditions is characterized by narrowing of joint space and formation of osteophytes? A- Gouty arthritis B- Osteoarthritis C- Pseudo-gout D- Rheumatoid arthritis Q- Which one of the following drugs works through inhibition of acetyl-cholinesterase enzyme and used in myasthenia gravis? A- Atropine B- Montelukast C- Neostigmine D- Noradrenaline Q- […]

Q- A patient with acute appendicitis complains of abdominal pain. Which of the following chemical mediators are responsible for this pain? A- Histamine and serotonin B- Leukotriene and interlukin-1 C- Prostaglandin and bradykinin D-Tumor necrosis factor and IgG Q- Which one of the following types of cells is involved in foreign body reaction? A- Eosinophil […]

Q- Which of the following is the most likely mechanism of action of hydralazine in treating cardiovascular disorders? A- Decreased cardiac preload B- Parasympathetic stimulation C- Relaxation of arterial smooth muscle D- Sympathetic antagonism Q- Which one of the following medications increases the threshold for angina? A- Benazepril B- Digoxin C- Furosemide D- Metoprolol Q- […]

Q- Which of the following is the mechanism of action of ciprofloxacin? A- Inhibits bacterial protein synthesis through binding with 30 S B- Inhibits DNA gyrase and relaxation of DNA C- Interferes with bacterial cell wall synthesis D- Interferes with bacterial metabolic production Q- Which of the following is the most effective treatment of a […]