Free Questions and Answers for All Medical Students all over the World
Q- Topical benzocaine overuse can cause sudden cyanosis with normal PaO₂. Which one of the following substances can reverse this reaction? A- Atropine B- Methylene blue C- Naloxone D- Sodium bicarbonate Q- A 32-year-old woman with a history of migraines is prescribed sumatriptan. What is its mechanism of action? A- 5-HT1B/1D receptor agonist B- … Read more
Q- A 40-year-old woman comes to the physician because of a runny nose, sneezing, and itching eyes on exposure to cats since childhood. Anti-allergy drugs have not provided relief. Her symptoms improve with a program of desensitization involving administration of increasing doses of the allergen. Which of the following is the most likely mechanism of … Read more
Q- A 5-month-old boy is brought to the clinic by his mother because of a 10-day history of “coughing spells” that occur several times daily and last 1 to 2 minutes; he often vomits afterward. He was delivered at term to a 16-year-old patient, gravida 1, para 1, following an uncomplicated pregnancy and spontaneous vaginal … Read more
Q- which of the following is the most common infectious cause of dilated cardiomyopathy in Central and South America? A- Coxsackievirus B B- Human immunodeficiency virus (HIV) C- Rickettsia D- Trypanosoma cruzi Q- Which of the following is the most sensitive test to order in a suspected case of myocardial sarcoidosis? A- Angiography B- … Read more
Q- A 25-year-old woman comes to the office because of a 3-day history of fever, chills, severe headache, weakness, muscle pain, loss of appetite, vomiting, diarrhea, and moderate abdominal pain. She is in nursing school and returned from a medical mission’s trip in West Africa 10 days ago. Her symptoms began abruptly while she was … Read more
I am going to answer the sample USMLE Step 1 Questions with Explanation. These questions are available at USMLE.org Q- An 11-year-old girl is brought to the emergency department by her parents because of a 1-week history of breast enlargement. She has not had pain or nipple discharge. She has asthma treated with inhaled albuterol … Read more