Questões de USMLE
3.602 questões com gabarito e explicação.
Fazer o diagnóstico grátisA 71-year-old man with chronic kidney disease (eGFR 25 mL/min/1.73m²) presents with severe bilateral Achilles tendon pain on day 3 of levofloxacin 500 mg daily for urinary tract in…
A 73-year-old hospitalized man with community-acquired pneumonia is treated with IV ceftriaxone. Two weeks into therapy, he develops watery diarrhea, cramping abdominal pain, and f…
A 5-year-old boy with acute bacterial meningitis due to Streptococcus pneumoniae is treated with ceftriaxone and vancomycin. On hospital day 2, he develops a diffuse maculopapular …
A 19-year-old previously healthy woman presents with sudden onset fever (39.8°C), severe headache, and petechial rash. Vital signs show BP 98/62, HR 118, RR 22, SpO2 98% on room ai…
A 39-year-old woman with newly diagnosed tuberculosis begins standard four-drug therapy including rifampin. Within days, she notices orange discoloration of her urine and contact l…
A 24-year-old man presents with urethritis and dysuria; urine culture confirms Neisseria gonorrhoeae. He is prescribed ciprofloxacin 500 mg orally twice daily. Vital signs are stab…
A 37-year-old woman with pyelonephritis (BP 128/82, HR 98, Temp 38.2°C, WBC 14,200/μL, positive urine nitrites) is treated with ciprofloxacin. One week later, she presents with acu…
A 19-year-old man with bacterial meningitis presents with fever (39.2°C), headache, and neck stiffness. Vital signs show BP 118/76, HR 104, RR 18, SpO2 98% on room air. He receives…
A 69-year-old man with gram-negative sepsis is treated with gentamicin 5 mg/kg IV daily. After 5 days, he develops rising serum creatinine (2.8 mg/dL) and vertigo with ataxia. Vita…
A 72-year-old woman with a CD4 count of 45 cells/μL presents to the emergency department with palpitations and dyspnea on exertion. She was started on azithromycin 1200 mg weekly 5…
A 19-year-old woman presents to the emergency department with fever (39.4°C), severe headache, neck stiffness, and photophobia. Vital signs show BP 116/74, HR 105, RR 22, SpO2 99% …
A 41-year-old woman with severe inflammatory acne presents with BP 118/76, HR 82, RR 14, Temp 37.2°C. She is prescribed doxycycline 100 mg orally twice daily and currently takes or…
A 45-year-old man with chronic kidney disease secondary to long-standing hypertension presents with fever, dysuria, and flank pain. His baseline eGFR is 25 mL/min and serum creatin…
A 42-year-old man with community-acquired pneumonia is started on azithromycin. After 3 days, he develops severe watery diarrhea with abdominal cramping and fever (38.9°C). Vital s…
A 67-year-old woman with atrial fibrillation presents with dysuria, frequency, and suprapubic pain. Vitals: BP 138/82, HR 92, RR 16, Temp 38.2°C, SpO2 98%. Urinalysis shows pyuria …
A 32-year-old woman with community-acquired pneumonia presenting with fever (38.9°C), cough, and dyspnea is prescribed azithromycin. On day 4 of therapy, she develops severe crampi…
A 3-year-old child with acute otitis media presents with fever (39.2°C), HR 120/min, and otalgia. Cultures identify penicillin-resistant Streptococcus pneumoniae. He is prescribed …
A 42-year-old woman with HIV infection (CD4 200 cells/μL) presents with fever, headache, and positive blood culture for Cryptococcus neoformans. Vital signs: BP 118/76, HR 102, RR …
A 55-year-old man with newly diagnosed pulmonary tuberculosis (chest X-ray showing left upper lobe infiltrate) is started on isoniazid, rifampin, pyrazinamide, and ethambutol. Two …
A 62-year-old woman with gastroesophageal reflux disease takes daily omeprazole. She is prescribed clarithromycin for H. pylori eradication as part of triple therapy. After 5 days,…
A 62-year-old postmenopausal woman with osteoporosis presents with progressive lumbar back pain for three months. Her blood pressure is 118/74 mmHg and BMI is 23 kg/m². BMD T-score…
A 55-year-old man with end-stage renal disease on hemodialysis three times weekly presents with BP 148/92, HR 88, RR 16, temp 37°C, and SpO2 98%. Laboratory studies reveal persiste…
A 14-year-old boy presents with polyuria and polydipsia following a traumatic brain injury sustained in a motor vehicle accident three days ago. Vital signs show HR 92 bpm, BP 118/…
A 34-year-old woman with a known history of Graves' disease who ran out of her methimazole prescription three weeks ago is brought to the emergency department by her husband, who r…