Questões de USMLE

A 35-year-old woman presents with recurrent episodes of severe bilateral vision loss and longitudinally extensive spinal cord inflammation causing paraplegia and urinary retention.…

A 28-year-old man presents with acute paraplegia developing over 24 hours. Vital signs: BP 128/82, HR 92, RR 16, Temp 37.2°C, SpO2 98% on room air. Examination reveals sensory leve…

A 67-year-old man with Parkinson disease treated with levodopa/carbidopa 25/100 mg four times daily for 5 years presents with involuntary writhing movements of his extremities and …

A 19-year-old boy develops acute ascending weakness in all four limbs and dyspnea over 24 hours following a viral upper respiratory infection. Vital signs: BP 118/76, HR 102, RR 22…

A 61-year-old woman with amyotrophic lateral sclerosis presents with progressive lower extremity weakness over 8 months. Vital signs: BP 128/76, HR 88, RR 18, SpO2 98% on room air.…

A 53-year-old man with a 20-year history of alcohol use disorder presents with chronic symptomatic hyponatremia (Na+ 114 mEq/L). During hospitalization, his sodium is rapidly corre…

A 38-year-old man presents with a 6-month history of progressive tremor, dysarthria, and cognitive decline. Vital signs: BP 128/82, HR 88, RR 16, Temp 37.2°C, SpO2 98% on room air.…

A 29-year-old pregnant woman at 24 weeks gestation presents to her obstetric clinic for a routine prenatal visit, during which persistent hypertension is noted on two separate read…

A 71-year-old man with Alzheimer disease has taken donepezil 10 mg daily for 4 weeks. He presents with syncope, BP 98/62 mmHg, HR 48 bpm, RR 16, and SpO2 98% on room air. ECG shows…

A 59-year-old man with a known history of small cell lung carcinoma, currently undergoing chemotherapy, presents to the emergency department with a 3-day history of progressive con…

A 68-year-old man with a 12-year history of type 2 diabetes mellitus and stage 3 chronic kidney disease is found unresponsive by his wife at home in the early morning. Emergency me…

A 27-year-old woman at 9 weeks of gestation presents to her obstetrician complaining of a 6-week history of heat intolerance, fine resting tremor, unintentional weight loss of 8 po…

A 45-year-old woman presents with progressive ascending paresthesias and weakness in both legs and hands over 6 weeks. Vital signs: BP 138/82, HR 94, RR 18, temp 37.2°C, SpO2 98% o…

A 25-year-old woman presents with 2 days of painful vision loss in her right eye with desaturated color perception, especially red objects. Vital signs: BP 118/76, HR 88, RR 16, Te…

A 49-year-old woman with a 12-year history of obesity and type 2 diabetes presents to her primary care physician for a routine follow-up. Her current medications include metformin …

A 55-year-old woman presents to her oncologist for follow-up after being diagnosed with invasive ductal carcinoma of the right breast six months ago. Immunohistochemical staining o…

A 24-year-old woman comes to the emergency department because of severe upper abdominal pain and nausea for six hours. She describes the pain as constant, radiating to her back, an…

A 28-year-old woman with bipolar I disorder has been stable on lithium 900 mg daily for 6 months. Three days ago, she developed acute gastroenteritis with persistent vomiting and d…

A 67-year-old man with a history of terminal ileal resection presents with progressive numbness in his feet and gait instability over 3 months. Vital signs: BP 138/82, HR 88, RR 16…

A 62-year-old woman with unstable angina undergoes urgent percutaneous coronary intervention. She receives an intravenous antiplatelet agent and subsequently develops a platelet co…

A 34-year-old man presents to a base camp medical station after ascending rapidly from 1,400 m to 4,200 m over 18 hours during a Himalayan trekking expedition. He reports a throbbi…

A 19-year-old man presents with acute paraplegia and loss of pain/temperature sensation at the T10 level; vibration sense is preserved. Vital signs: BP 118/76, HR 88, RR 16, Temp 3…

A 22-year-old man with no significant past medical history presents to the emergency department with sudden onset palpitations that began 45 minutes ago while he was at rest. He de…

A 45-year-old man with a 10-year history of relapsing-remitting MS presents with progressive leg weakness, spasticity, and bladder dysfunction over 3 years without distinct relapse…