Congenital Heart Disease USMLE Step 1 Practice Questions
56 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 2-year-old boy with Down syndrome is brought to the physician by his mother for a follow-up examination. His blood pressure is increased in the upper extremities and decreased…
- USMLE Step 1 · medium2. A 1-day-old male infant born at term presents to the neonatal intensive care unit with severe cyanosis and respiratory distress. Vital signs show heart rate 168/min, respiratory…
- USMLE Step 1 · hard3. A 5-year-old girl with a history of uncorrected cyanotic heart disease now presents with dyspnea, syncope, and severe cyanosis. Physical examination reveals clubbing of the digi…
- USMLE Step 1 · medium4. A 2-hour-old term male infant presents with severe cyanosis, shock, and metabolic acidosis. He has been dependent on prostaglandin E1 infusion since birth. Echocardiography show…
- USMLE Step 1 · medium5. A 4-year-old boy is found to have an asymptomatic cardiac murmur during a routine physical examination. Cardiac auscultation reveals a fixed, widely split S2 with a systolic flo…
- USMLE Step 1 · easy6. A 6-week-old female infant presents with poor feeding, failure to thrive, and respiratory distress. Physical examination reveals a hyperdynamic precordium, bounding pulses, and…
- USMLE Step 1 · easy7. A 2-year-old boy with a history of cyanotic heart disease presents to the ED with acute severe cyanosis and syncope during crying. His mother reports 'tet spells' that respond t…
- USMLE Step 1 · medium8. A 3-day-old male infant presents with cyanosis and severe respiratory distress. Vital signs show HR 165 bpm, RR 58/min, BP 58/40 mmHg, SpO2 78% on room air, and temperature 36.8…
- USMLE Step 1 · hard9. A 3-week-old male born at term presents to the emergency department with cyanosis. The mother reports poor feeding and rapid breathing since day of life 2. Vital signs show SpO2…
- USMLE Step 1 · medium10. A 4-year-old boy with a family history of sudden cardiac death presents to the emergency department with acute onset dyspnea and chest discomfort after playing soccer. His mothe…
- USMLE Step 1 · hard11. A 2-day-old male infant is transferred to the NICU for evaluation of cyanosis and a systolic heart murmur. Birth history is notable for maternal diabetes and the infant has char…
- USMLE Step 1 · easy12. A 5-year-old girl with Turner syndrome presents with persistent hypertension (BP 142/88 mmHg in upper extremities, 98/62 mmHg in lower extremities), heart rate 92/min, and a con…
- USMLE Step 1 · hard13. A 1-day-old male with cyanosis and severe respiratory distress presents with HR 165, RR 48, BP 58/32, SpO2 68% on room air, and temperature 37.2°C. Physical examination reveals…
- USMLE Step 1 · easy14. A 4-month-old male infant born at 35 weeks gestation to a mother with poorly controlled gestational diabetes presents with poor feeding, failure to gain weight, and increased wo…
- USMLE Step 1 · medium15. A 3-week-old male infant born to a mother with confirmed first-trimester rubella infection presents to the emergency department with cyanosis, poor feeding, and respiratory dist…
- USMLE Step 1 · medium16. A 5-year-old girl born to a mother with first-trimester rubella infection presents with cataracts, sensorineural deafness, and a continuous "machinery" murmur at the left infrac…
- USMLE Step 1 · medium17. A 7-year-old boy with a history of cyanotic heart disease presents to the emergency department with acute worsening of dyspnea and cyanosis. Physical examination reveals severe…
- USMLE Step 1 · medium18. A 6-week-old premature infant born at 28 weeks presents with worsening respiratory distress and signs of congestive heart failure. Vital signs: HR 165/min, RR 58/min, BP 58/32 m…
- USMLE Step 1 · hard19. A 2-year-old boy with Down syndrome presents to the clinic with his mother who reports he becomes short of breath during play. On examination, he has mild cyanosis of the lips a…
- USMLE Step 1 · hard20. A 3-day-old male born at term presents with cyanosis. Physical examination reveals differential cyanosis, with the face and upper extremities appearing less blue than the lower…
- USMLE Step 1 · medium21. A 4-year-old girl is brought to the emergency department after a syncopal episode during soccer practice. Her mother reports a 6-month history of exercise-induced dyspnea and ch…
- USMLE Step 1 · medium22. A 6-month-old boy presents with poor feeding and failure to thrive. Vital signs show HR 145 bpm, BP 95/55 mmHg with widened pulse pressure, RR 52/min, and SpO2 92% on room air.…
- USMLE Step 1 · easy23. A 3-week-old female infant born to a mother with rubella infection during the first trimester presents with fever (38.2°C), tachycardia (160 bpm), tachypnea (52 breaths/min), an…
- USMLE Step 1 · hard24. A 5-year-old boy with tetralogy of Fallot presents to the emergency department with acute dyspnea and presyncope during soccer practice. His parents note he frequently assumes a…