Questões de USMLE
3.602 questões com gabarito e explicação.
Fazer o diagnóstico grátisA nurse administers 10 units of regular insulin intravenously to a patient instead of the prescribed 10 units of regular insulin subcutaneously. The patient develops symptomatic hy…
A quality improvement team uses a Plan-Do-Study-Act (PDSA) cycle to reduce patient wait times in an outpatient clinic. In the Plan phase, they hypothesize that staggering appointme…
A 52-year-old woman presents to her primary care physician 8 weeks after her husband's death from myocardial infarction. She reports experiencing daily headaches described as a tig…
A 27-year-old woman undergoes partial hepatectomy for living-donor liver transplantation to her brother. Three weeks postoperatively, she reports right upper quadrant fullness but …
A 41-year-old male scuba diver ascends rapidly following equipment malfunction. He presents with acute dyspnea, dizziness, severe shoulder and knee pain, and skin mottling. Vital s…
A 61-year-old man with metastatic pancreatic adenocarcinoma presents with profound weight loss despite consuming 2500 kcal daily. He has lost 35 pounds over 3 months, reduced muscl…
A 17-year-old boy undergoing screening colonoscopy for familial polyposis presents with hundreds of adenomatous polyps throughout the colon. Vital signs are normal (BP 118/76, HR 7…
A 67-year-old man with atrial fibrillation has been taking warfarin for 18 months. He presents to the emergency department with severe epistaxis, hemoptysis, and a 2-day history of…
A 19-year-old woman with known peanut allergy accidentally ingests a dessert containing peanuts. Within minutes, she develops diffuse urticaria, wheezing, and lightheadedness. Vita…
A 29-year-old woman presents with recurrent lymphadenopathy and splenomegaly. Vital signs show BP 118/76, HR 88, RR 16, Temp 37.2°C, SpO2 98%. Laboratory evaluation reveals lymphoc…
A 30-year-old woman experiences sudden severe dyspnea, hypotension (BP 80/50), and cyanosis during active labor. Minutes later, she develops profuse bleeding from intravenous sites…
A 38-year-old woman with newly diagnosed atrial fibrillation presents to the anticoagulation clinic to initiate warfarin therapy. Vital signs are stable: BP 118/76, HR 102, RR 16, …
A 62-year-old man with no documented penicillin allergy undergoes elective colorectal surgery. Prophylactic cefazolin is not administered perioperatively. On postoperative day 3, h…
A 34-year-old woman at 32 weeks gestation presents to the obstetric unit with a chief complaint of headache and blurred vision for 6 hours. Vital signs are: BP 158/102 mmHg, HR 92/…
A 450-bed teaching hospital implements a rapid sepsis recognition protocol in the emergency department, which includes automated EHR alerts for lactate >2 mmol/L and systemic infla…
A surgical team is performing a laparoscopic cholecystectomy. Before the first incision, the circulating nurse initiates a time-out procedure. During the time-out, the anesthesiolo…
A 62-year-old man with symptomatic heart failure is enrolled in a randomized controlled trial comparing a novel ACE inhibitor (Drug A) to standard therapy (Drug B). He is randomize…
A 55-year-old man with type 2 diabetes mellitus is started on metformin 1000 mg twice daily by his primary care physician for glycemic control. His baseline serum creatinine is 0.9…
A quality improvement team at a community hospital wants to reduce the rate of postoperative surgical site infections. They review recent data and find that the antibiotic timing p…
A 67-year-old man with atrial fibrillation is anticoagulated with warfarin. He visits three different clinics for medication refills and has labs drawn at each site, but results ar…
A 40-year-old man with acute myocardial infarction is admitted to a community hospital's cardiac care unit. He receives timely reperfusion therapy and is discharged after an uncomp…
A 42-year-old man with type 2 diabetes mellitus presents for routine follow-up. His current HbA1c is 8.2% despite metformin monotherapy. The endocrinology team initiates a quality …
A 45-year-old woman presents to the emergency department with fever (38.9°C), hypotension (88/52 mmHg), tachycardia (118 bpm), and altered mental status. Blood cultures are drawn a…
A 69-year-old woman with rheumatic heart disease presents with progressive dyspnea and orthopnea. Vital signs: BP 148/92 mmHg, HR 108/min, RR 22/min, SpO2 92% on room air. Physical…