Questões de USMLE
3.602 questões com gabarito e explicação.
Fazer o diagnóstico grátisA 52-year-old pesticide worker exposed to organophosphate presents with excessive salivation, wheezing, and marked skeletal muscle weakness with visible fasciculations. Vital signs…
A 68-year-old man with hypertension and angina presents with dizziness and fatigue. Vital signs show BP 92/58 mmHg, HR 48 bpm, RR 14/min, temp 37°C, SpO2 98% on room air. He report…
A 26-year-old man presents to the emergency department with acute chest pain following cocaine use. Vital signs show BP 168/104 mmHg, HR 138/min, RR 22/min, and normal SpO2. He app…
A 31-year-old woman with bipolar disorder started lithium 6 months ago. She now reports excessive thirst and polyuria. Vital signs show HR 78/min, BP 118/76 mmHg, RR 14/min. Labs r…
A 36-year-old woman with opioid use disorder presents 2 days after stopping oxycodone with rhinorrhea, abdominal cramping, diarrhea, piloerection, and mydriasis. Vital signs show H…
A 17-year-old girl with asthma presents with tremor and palpitations after repeated albuterol use during soccer practice. Vital signs show HR 118 bpm, BP 132/78 mmHg, RR 22/min, te…
A 61 year old woman with cirrhosis due to hepatitis C develops severe nausea after chemotherapy. She is given a usual oral dose of a medication that is extensively metabolized in t…
A 23-year-old woman presents to the emergency department 10 hours after intentional acetaminophen overdose. She reports nausea and right upper quadrant pain. Vital signs show BP 10…
A 71-year-old man presents with urinary hesitancy, weak stream, and nocturia. Vital signs: BP 138/82 mmHg, HR 78/min, RR 16/min. Digital rectal examination reveals an enlarged, smo…
A 61-year-old man with stable chronic heart failure and reduced ejection fraction (EF 32%) presents with dyspnea on exertion. Vital signs: BP 128/76 mmHg, HR 89 bpm, RR 18, SpO2 98…
A 68-year-old man with hypertension and heart failure presents to clinic with a persistent dry cough that began 3 weeks after initiating lisinopril 10 mg daily. His vital signs are…
A 42-year-old man with hypertension and benign prostatic hyperplasia is started on doxazosin. Thirty minutes after the first dose, he experiences dizziness and syncope upon standin…
A 59-year-old man with coronary artery disease and hypertension (BP 145/92 mmHg, HR 68) starts high-intensity lipid-lowering therapy. Three months later, he reports proximal muscle…
A 29-year-old woman with a known history of seasonal allergic rhinitis presents to her primary care physician complaining of progressively worsening nasal congestion over the past …
A 67-year-old man with atrial fibrillation presents with heart rate 52 bpm, blood pressure 98/62 mmHg, and respiratory rate 16/min. He takes digoxin and metoprolol. Recent serum di…
A 24-year-old man with allergic rhinitis uses an over-the-counter nasal spray containing oxymetazoline, a selective α1-agonist, three times daily for 5 days and develops rebound na…
A 44-year-old male construction worker is brought to the emergency department 90 minutes after acute exposure to an organophosphate pesticide. He presents with severe diaphoresis, …
A 25-year-old man is brought to the emergency department by his partner approximately 2 hours after intentionally ingesting an unknown quantity of aspirin tablets. His partner repo…
A 52-year-old man presents with a 6-week history of worsening erectile dysfunction despite initiating sildenafil 50 mg daily. His past medical history includes hypertension treated…
A 55-year-old woman with a 10-year history of hypertension and angina pectoris is started on labetalol 200 mg twice daily. She also has mild persistent asthma managed with albutero…
A 65-year-old woman with narrow-angle glaucoma presents to ophthalmology for routine examination. She is accidentally instilled with tropicamide 1% eye drops. Within 30 minutes, sh…
A 58-year-old man with hypertension and a 3-year history of erectile dysfunction presents to his cardiologist, who initiates lisinopril 10 mg daily. Vital signs show BP 148/92 mmHg…
A 67-year-old man is evaluated 2 days after open colectomy because he has suprapubic discomfort and inability to void. His temperature is 37.1°C, blood pressure is 128/76 mmHg, and…
A 50-year-old man with overactive bladder is started on oxybutynin 5 mg twice daily for urge incontinence. Two weeks later, he presents to the emergency department with constipatio…