USMLE Q Bank Step 1- 198

A 23-year-old man presents to the emergency room complaining of massive watery diarrhea for 6 hours. He doesn’t have any vomiting or abdominal pain. Stool culture reveals a curved; gram negative rod which secretes an enterotoxin contains subunit A and a binding subunit B. What is the most likely reason for this patient’s massive diarrhea? … Read more

Repeated USMLE Questions Step 1- 199

Q- A 32-year-old diabetic woman delivered a large baby after difficult vaginal delivery. At labor, the head emerged first and then the shoulders were stuck behind the bony pelvis. The obstetrician had to use some tools and maneuvers to deliver the baby. The baby had a good cry and red pink color but his right … Read more

Repeated USMLE Questions Step 1- 200

Q- A 72- year-old man with a long history of hypertension and coronary artery disease presents for a follow up examination. He took metoprolol for many years. He started taking enalapril last week. His blood pressure is now under control. Physical and laboratory examinations are unremarkable except for a slight increase in serum creatinine. What … Read more

USMLE Q Bank Step 2 CK- 400

A 28-year-old woman visits her physician complaining of fatigue, palpitations, loss of weight, diarrhea and irritability for 4 months. She is also intolerant to hot weather. She does not smoke or drink coffee or alcohol. Her vital signs are within normal limits except for rapid regular pulse. She has fine tremors and her skin is … Read more

USMLE Q Bank Step 2 CK- 406

A 35-year-old man with a history of Marfan syndrome presents to the emergency room complaining of chest pain radiating to his upper back between shoulder blades. His blood pressure is 170/90 mmHg in his right arm and 90/60 in left arm. His pulse is 98/min. Cardiac examination reveals regular rhythm with diastolic murmur on the … Read more

Repeated USMLE Questions Step 1- 212

A 34-year-old woman visits her physician with a complaint of severe headache for two months. She took several kinds of analgesics with no significant improvement. Her headache is worse in the morning and improved by doing day activities. Imaging studies and laboratory tests confirm the diagnosis of pituitary adenoma. Which of the following is the … Read more