Questões de USMLE

A 3-week-old infant presents with tachypnea, poor feeding, and failure to gain weight. Vital signs show heart rate 165 bpm, respiratory rate 58/min, blood pressure 65/40 mmHg, and …

A 27-year-old woman presents with intermittent palpitations and atypical chest discomfort. She denies dyspnea on exertion. Vital signs: BP 118/76 mmHg, HR 92/min, RR 16/min, temp 3…

A 19-year-old college student presents with recurrent episodes of palpitations (HR 180 bpm, BP 110/70 mmHg, RR 20, SpO2 98% on room air). Between episodes, ECG demonstrates a short…

A 38 year old woman from a low resource setting presents with progressive dyspnea on exertion and occasional hemoptysis. She reports recurrent untreated sore throats as a child. On…

A 63-year-old man with long-standing poorly controlled hypertension (BP 168/102 mmHg, HR 88 bpm) presents for routine follow-up. He denies dyspnea or orthopnea. Cardiac examination…

A 19 year old man collapses during basketball practice and is successfully resuscitated. His father died suddenly at age 32. Electrocardiogram shows ventricular tachycardia with a …

A 54-year-old man with uncontrolled hypertension presents with progressive exertional dyspnea and hoarseness. Vital signs show BP 168/95 mmHg, HR 102/min, RR 20/min, SpO2 96% on ro…

A 25-year-old healthy volunteer participates in a cardiac physiology experiment and receives an intravenous infusion of a beta-1 agonist. Vital signs show HR 98 bpm, BP 128/76 mmHg…

A 57-year-old woman with myxomatous mitral valve degeneration presents with dyspnea on exertion. Vital signs show BP 138/72 mmHg, HR 88/min, RR 18/min, SpO2 98% on room air. Echoca…

A 29-year-old man from Connecticut presents with lightheadedness and palpitations. Two weeks ago, he had fever (38.9°C), a circular expanding erythema migrans rash on his thigh aft…

A 17-year-old boy is struck in the temple during a baseball game and briefly loses consciousness. He regains alertness and feels well for an hour, then becomes increasingly somnole…

A 68-year-old man with hypertension presents with sudden-onset right facial droop and right arm weakness. Vital signs show BP 168/94 mmHg, HR 88, RR 16, temp 37°C. Examination reve…

A 52-year-old man with a history of untreated syphilis presents with progressive gait instability and lightning-like pains in both legs over 3 months. Vital signs: BP 145/92 mmHg, …

A 29-year-old man is stabbed in the back during an assault. Examination shows loss of vibration and proprioception in the right leg, weakness of the right leg, and loss of pain and…

A 62-year-old man with hypertension and diabetes presents with acute onset right-sided weakness and facial droop while having breakfast. His wife activates emergency services immed…

A 28-week premature infant presents on day 2 of life with seizures, a bulging anterior fontanelle, and recurrent apneic episodes. Vital signs show HR 165 bpm, RR 48/min, BP 45/28 m…

An 81-year-old man with cerebral atrophy falls at home and strikes his head. Two weeks later, he presents with progressive confusion, headache, and gait disturbance. Vital signs sh…

A 3-year-old boy presents with recurrent brief episodes of sudden loss of muscle tone lasting 5-10 seconds during play, after which he awakens alert. His mother reports he has had …

A 32-year-old woman with generalized tonic-clonic seizures controlled on lamotrigine for 3 years presents planning pregnancy. Vital signs are normal (BP 118/76, HR 72, RR 16, Temp …

A 42-year-old woman with a 3-year history of focal onset seizures with impaired awareness presents for follow-up evaluation. She reports 2-3 breakthrough seizures per month despite…

A 34-year-old man with temporal lobe epilepsy controlled on levetiracetam for 3 years presents with a 2-week history of mood lability, irritability, anger outbursts, and suicidal i…

A 32-year-old primigravida at 8 months gestation presents with a sudden generalized tonic-clonic seizure. She reports a 2-week history of progressive headaches, blurred vision, and…

An 8-month-old boy is evaluated for clusters of sudden flexion of the neck, trunk, and arms that occur shortly after awakening. His parents also report loss of previously acquired …

A 7-year-old boy is brought to clinic because his teacher has noticed multiple daily episodes during which he suddenly stares blankly for 10 seconds and then immediately resumes sp…