Questões de USMLE

A 73-year-old woman with mild cognitive impairment and limited English proficiency is discharged from the hospital after treatment for community-acquired pneumonia. She is prescrib…

A clinic implements a new diabetes management protocol. They measure hemoglobin A1c levels for all diabetic patients at baseline and every 3 months. After 1 year, they want to pres…

A case-control study investigates risk factors for type 2 diabetes mellitus in a primary care population. Researchers identify 500 patients with newly diagnosed type 2 diabetes (fa…

A 58-year-old male smoker with a 40-pack-year history presents with productive cough and dyspnea. Vital signs show BP 145/88, HR 98, RR 22, SpO2 88% on room air. A longitudinal stu…

A 62-year-old man presents with a 3-month history of intermittent hematochezia. Vital signs: BP 128/82, HR 92, RR 16, Temp 37.2°C, SpO2 98% on room air. A screening blood test for …

A researcher compares crude mortality rates between a retirement community (mean age 78 years) and a nearby university town (mean age 22 years). The retirement community demonstrat…

A 7-year-old boy with acute lymphoblastic leukemia currently receiving chemotherapy presents to clinic with vital signs: BP 105/68, HR 92, RR 20, Temp 37.1°C, SpO2 98%. Recent labs…

A 34-year-old woman presents to the emergency department in July with fever (38.5°C), cough, and myalgias for 2 days. Vital signs: BP 118/76, HR 92, RR 18, SpO2 98% on room air. A …

A local health department identifies 12 cases of hepatitis A (ALT 850 U/L, anti-HAV IgM positive) linked to a restaurant over 10 days. Affected patients present with jaundice, feve…

A epidemiologic study examining 5,000 patients (mean age 62, 55% male) finds coffee consumption associated with lung cancer (RR 2.1, p<0.05). Chest CT confirms adenocarcinoma in 34…

A 58-year-old woman undergoes mammography screening and is found to have a 1.2-cm breast mass with negative axillary lymph nodes on imaging. Her vital signs are stable (BP 128/82, …

In a clinical trial evaluating a new antihypertensive medication, researchers randomly assign 1,000 patients to either drug or placebo. At baseline, the drug group has a mean systo…

A 59-year-old woman with hypertension (BP 148/92 mmHg) and hyperlipidemia presents for routine evaluation. She is asymptomatic with normal vital signs otherwise (HR 78/min, RR 16/m…

A 59-year-old asymptomatic woman with a 20 pack-year smoking history presents for preventive care. Vital signs are normal (BP 128/82, HR 72, RR 14, Temp 98.6°F). She denies cough o…

A 32-year-old female presents with left leg swelling and pain. She uses oral contraceptives and smokes one pack daily. Vital signs: BP 118/76, HR 92, RR 16, Temp 37°C, SpO2 98%. D-…

A 45-year-old woman participates in a randomized influenza vaccine trial. She receives the inactivated influenza vaccine and remains asymptomatic throughout the season with normal …

A 52-year-old man with a 30-pack-year smoking history presents with BP 138/86, HR 82, RR 16, and SpO2 98% on room air. He denies dyspnea, cough, or chest pain. Spirometry shows FEV…

A 52-year-old woman presents with weight loss and palpitations. Vital signs: BP 142/88, HR 108, RR 18, Temp 37.2°C, SpO2 98%. Laboratory studies show elevated free T4 (28 pg/mL) an…

A 7-year-old boy with acute lymphoblastic leukemia currently receiving chemotherapy (HR 102, BP 98/62, temp 37.2°C) has an absolute neutrophil count of 800/μL and cannot receive li…

A 45-year-old woman with no significant medical history presents for routine breast cancer screening mammography. The examination is interpreted as BI-RADS 4 (suspicious for malign…

A 15-year prospective cohort study enrolls 5,000 asymptomatic adults aged 40-60 years and follows them for cardiovascular disease (CVD) outcomes. Baseline measurements include tota…

A tropical region in Southeast Asia has consistently reported 15 to 20 malaria cases per 100,000 people annually for the past 8 years with minimal year-to-year variation. Serologic…

A tropical region has consistently reported 15 to 20 malaria cases per 100,000 people annually for over a decade with minimal year-to-year variation. Recent surveillance data confi…

A 16-year-old boy is brought to the emergency department by his parents after a suicide attempt by medication overdose. He is medically stabilized. He tells the psychiatrist he no …