Coronary Artery Disease USMLE Step 1 Practice Question
A 3-month-old male presents with poor feeding and a harsh holosystolic murmur best heard at the left lower sternal border. Vital signs show HR 145 bpm, RR 42/min, BP 92/58 mmHg, and SpO2 98% on room air. He gains weight appropriately and has no cyanosis. Chest radiograph reveals mild cardiomegaly with normal pulmonary vascularity. Echocardiography demonstrates a defect in the ventricular septum with left-to-right shunting. Which congenital lesion is most likely?
Answer choices
- ATetralogy of Fallot
- BAtrial septal defect
- CPatent ductus arteriosus
- DCoarctation of the aorta
- EVentricular septal defectCorrect answer
- FTruncus arteriosus
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