Tue28September1157AM 9

The following congenital heart lesions have characteristic ECG patterns:

True / False

Mild pulmonary stenosis Correct

Tricuspid atresia Correct

Patent ductus arteriosus (PDA) Incorrect answer selected

Ventricular septal defect (VSD) Incorrect answer selected

Endocardial cushion defect Correct

Explanation

Endocardial cushion defect involves fusion of the tricuspid and mitral valve with an atrial septal defect. The ECG will show right atrial enlargement, rightward axis, right ventricular hypertrophy and rSR1- v1.

Tricuspid atresia is associated with small right ventricular complexes and may show left ventricular hypertrophy.

Ventricular septal defect (VSD) and patent ductus arteriosus (PDA) have similar ECG patterns which may be normal. They can also show left ventricular hypertrophy , biventricular hypertrophy, or right ventricular hypertrophy if the shunt reverses.

In mild pulmonary stenosis the ECG will also usually be normal.

Answer Statistics

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Average score: 64.50%

Times answered: 222