Arrhythmias USMLE Step 1 Practice Questions
54 board-style USMLE Step 1 questions in Cardiovascular. Each question shows the correct answer; create a free account for the full explanation and adaptive practice.
- USMLE Step 1 · medium1. A 72-year-old man with hypertension and type 2 diabetes mellitus presents to the emergency department complaining of acute onset palpitations and shortness of breath. His wife r…
- USMLE Step 1 · medium2. A 42-year-old man with prior myocardial infarction presents with asymptomatic ventricular bigeminy on Holter monitoring. Vital signs: BP 118/76 mmHg, HR 72 bpm, RR 16, temp 37°C…
- USMLE Step 1 · hard3. A 38-year-old woman without prior cardiac history presents to the emergency department with acute-onset palpitations and dyspnea. She reports symptom onset 15 minutes ago while…
- USMLE Step 1 · medium4. A 74-year-old man with acute inferior wall myocardial infarction develops bradycardia with a heart rate of 38 bpm. Physical exam reveals cannon A waves in the neck. ECG shows P…
- USMLE Step 1 · medium5. A 67-year-old man with a 15-year history of COPD presents to the emergency department with acute dyspnea, fever, and productive cough. Vital signs show: HR 102 bpm, BP 138/88 mm…
- USMLE Step 1 · hard6. A 45-year-old woman with paroxysmal atrial fibrillation is started on flecainide for rhythm control. She has a history of hypertension but normal ventricular function. Three wee…
- USMLE Step 1 · hard7. A 29-year-old man presents to the emergency department with palpitations and dyspnea. He has a 15-year history of recurrent syncope triggered by emotional stress or sudden audit…
- USMLE Step 1 · medium8. A 72-year-old man with chronic atrial fibrillation and CKD stage 3 is found to have a heart rate of 110 bpm at rest. He is currently on diltiazem. His digoxin level is 2.8 ng/mL…
- USMLE Step 1 · medium9. A 68-year-old man with a history of hypertension and left ventricular hypertrophy presents to the emergency department after experiencing syncope during morning jogging. His wif…
- USMLE Step 1 · medium10. A 34-year-old woman with no significant past medical history presents to the emergency department with acute onset palpitations and chest discomfort. Symptoms began 30 minutes a…
- USMLE Step 1 · hard11. A 22-year-old medical student presents with recurrent episodes of sinus tachycardia (HR 115 bpm) triggered by stress. Vital signs show BP 128/76, RR 16, temp 37°C, SpO2 98%. ECG…
- USMLE Step 1 · hard12. A 68-year-old man with a history of myocardial infarction presents with palpitations and dyspnea. Vital signs show BP 128/82 mmHg, HR 142 bpm, RR 18, temperature 37.2°C, and SpO…
- USMLE Step 1 · medium13. A 72-year-old woman with long-standing hypertension presents with palpitations and dyspnea. Vital signs show BP 148/92 mmHg, HR 118/min, RR 22/min, temperature 36.8°C, and SpO2…
- USMLE Step 1 · medium14. A 58-year-old man presents with palpitations and dyspnea on exertion. Vital signs: BP 138/82 mmHg, HR 92 bpm, RR 18/min, temp 37.2°C, SpO2 98% on room air. ECG demonstrates an r…
- USMLE Step 1 · medium15. A 27-year-old pregnant woman at 24 weeks gestation presents with sudden palpitations and diaphoresis. Vital signs show BP 118/76 mmHg, HR 185/min, RR 20/min, SpO2 98% on room ai…
- USMLE Step 1 · medium16. A 64-year-old man with hypertension presents with substernal chest pain. Vital signs: BP 98/62, HR 48, RR 14, Temp 37°C, SpO2 98%. ECG shows inferior ST elevation with PR prolon…
- USMLE Step 1 · medium17. 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…
- USMLE Step 1 · medium18. A 68-year-old man is on postoperative day 3 after coronary artery bypass graft surgery. He develops an irregularly irregular tachycardia with heart rate of 118/min. Vital signs…
- USMLE Step 1 · medium19. A 21-year-old man presents with palpitations and chest discomfort one week after a flu-like illness. Vital signs: BP 118/76 mmHg, HR 102 bpm, RR 18, Temp 37.2°C, SpO2 98% on roo…
- USMLE Step 1 · medium20. A 62-year-old man with end-stage kidney disease on hemodialysis presents with generalized weakness and palpitations after missing his scheduled dialysis session. Vital signs sho…
- USMLE Step 1 · hard21. A 77-year-old woman with heart failure and chronic kidney disease presents with nausea, yellow-tinted vision, and palpitations. Vital signs: BP 98/62 mmHg, HR 140/min, RR 20/min…
- USMLE Step 1 · medium22. A 64-year-old man with acute anterior wall myocardial infarction presents with frequent premature ventricular contractions. Vital signs show BP 118/76 mmHg, HR 102/min, RR 18/mi…
- USMLE Step 1 · hard23. A 30-year-old woman with known Wolff-Parkinson-White syndrome presents with sustained palpitations and chest discomfort. Vital signs: BP 118/76 mmHg, HR 180 bpm, RR 18, SpO2 98%…
- USMLE Step 1 · hard24. A 63-year-old man with a prior anterior myocardial infarction presents with symptomatic paroxysmal atrial fibrillation. Current vital signs: BP 128/82 mmHg, HR 142 bpm, RR 16, t…