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Cert Cardiology(SA) Paed Practice Questions - CMSA Sub-specialty Certificate In Cardiology Cert Cardiology(SA) Paed Exam

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A newborn with trisomy 21 (Down syndrome) undergoes a screening electrocardiogram (ECG) on day 2 of life. The ECG demonstrates a superior QRS axis (-60 to -120 degrees) with counterclockwise frontal loop rotation and first-degree AV block. Which congenital cardiac lesion is most strongly associated with these ECG findings?
Correct Answer:
Complete Atrioventricular Septal Defect (AVSD)

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