Questões de USMLE

A culture of Staphylococcus aureus bacteria is selected over many months for its ability to grow in increasing concentrations of penicillin. When colonies of this original culture …

A 67-year-old man with a 10-day history of productive cough, fever, and dyspnea is admitted to the hospital. He has a history of COPD but denies recent aspiration, dental procedure…

A 23-year-old female with sickle cell disease presents with fever (39.2°C), severe left tibial pain, and tachycardia (HR 108/min). Blood pressure is 118/76 mmHg, respirations 18/mi…

A 47-year-old male presents with a nonproductive cough and rales on his chest examination. A chest x-ray film suggests atypical pneumonia. The pneumonia resolves after treatment wi…

A 20-year-old female presents with a 2-day history of dysuria and increased urinary frequency. She states that she was recently married and was not sexually active prior to the mar…

A 58-year-old female is admitted to the hospital with fever, abdominal cramps, and severe watery diarrhea. The symptoms began one day after attending a banquet. She was treated wit…

A 45-year-old man with a history of recurrent cold sores presents with severe blepharitis, conjunctivitis, and corneal dendritic ulcers confirmed by fluorescein staining. He has be…

A 72-year-old man with a 15-year history of COPD presents to the emergency department with a 3-day history of dyspnea, fever (38.9°C), and productive cough with purulent sputum. He…

A 68-year-old woman presents with fever (38.9°C), malaise, and knee swelling 10 days after prosthetic knee arthroplasty. Vital signs show HR 102/min, BP 138/88 mmHg, RR 18/min, SpO…

A 72-year-old man on chemotherapy presents with fever (39.2°C), confusion, and neck stiffness two weeks after consuming unpasteurized cheese. Vital signs show HR 108, BP 136/82, RR…

A 28-year-old G2P1 woman at 20 weeks gestation presents to the emergency department with a 2-day history of fever (38.5°C), myalgias, and mild nausea. She reports recent consumptio…

A 2-year-old boy with functional asplenia secondary to sickle cell disease (hemoglobin S on electrophoresis) presents for preventive vaccination against encapsulated bacteria. Vita…

A 61-year-old woman on mechanical ventilation for 8 days develops fever (38.9°C), tachycardia (HR 112), and purulent sputum. Chest X-ray shows new bilateral infiltrates. Sputum cul…

A 24-year-old woman presents to the emergency department with fever (39.2°C), vomiting, and a diffuse erythematous sunburn-like rash. Vital signs show hypotension (88/56 mmHg), tac…

A 67-year-old man with a prosthetic heart valve presents with fever (38.9°C), new systolic murmur, and malaise 6 months post-replacement. Vital signs show HR 102/min, BP 118/76 mmH…

A 58-year-old male with alcohol use disorder and multiple dental caries develops a pulmonary abscess (chest X-ray shows cavitary lesion with air-fluid level). He is started on clin…

A 44-year-old woman with type 2 diabetes mellitus comes to the physician with a 3-day history of fever, right calf pain, and swelling. Her temperature is 38.7°C (101.7°F). Physical…

A 45-year-old man with COPD presents to the emergency department with a 3-day history of productive cough with green sputum, dyspnea, and fever. Vital signs: BP 128/82 mmHg, HR 102…

A 54-year-old woman presents with a 2-month history of recurrent, painful erosions of the oral mucosa and a 1-week history of flaccid blisters on the flexural surfaces of her trunk…

A 19-year-old woman presents with her third episode of gonococcal cervicitis in 12 months despite appropriate ceftriaxone and azithromycin treatment. Vital signs show BP 118/76, HR…

A 68-year-old male with alcoholic cirrhosis presents with abdominal distension and hematemesis. Vital signs: BP 92/58, HR 108, RR 20, Temp 38.5°C, SpO2 98% on room air. Paracentesi…

A 28-year-old man presents to the emergency department 6 hours after eating raw oysters at a seafood restaurant. He reports acute onset of profuse, watery diarrhea and severe cramp…

A 3-year-old boy with no prior vaccinations presents to the emergency department with a 4-day history of sore throat, low-grade fever (38.5°C), and progressive barking cough with i…

A 55-year-old man with rheumatoid arthritis managed with infliximab presents to clinic with a 3-week history of a painless, indurated ulcer with minimal drainage on his left forear…