Heart Failure USMLE Step 1 Practice Question
A full-term newborn develops cyanosis (SpO2 78%), tachypnea (RR 68), and hepatomegaly within hours of birth. Heart rate is 165 bpm; blood pressure is normal. The mother took lithium for bipolar disorder during the first trimester. Chest X-ray shows cardiomegaly with pulmonary edema. Echocardiography reveals apical displacement of tricuspid valve leaflets with severe tricuspid regurgitation. There is no evidence of sepsis. Which of the following is the most likely diagnosis?
Answer choices
- ATransposition of the great arteries
- BEndocardial cushion defect
- CPatent ductus arteriosus
- DTetralogy of Fallot
- EEbstein anomalyCorrect answer
- FTricuspid atresia
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