Question

An infant has a continuous machine-type murmur best heard at the left upper sternal border throughout systole and diastole, as well as a bounding pulse and a thrill on palpation. These clinical findings are consistent with which congenital heart defect?A. Atrial septal defect (ASD)B. Ventricular septal defect (VSD)C. Patent ductus arteriosus (PDA)D. Atrioventricular canal defect (AVC)

Answer 1

The correct answer is C. Patent ductus arteriosus (PDA).

Explanation:

The infants with PDA or patent ductus arteriosus characteristically have. sign and symptoms of pulmonary over circulation, bounding pulses and any precordium, in a significant amount.

If pulmonary vascular resistance declined then PDA will have symptoms mentioned in question which is a continuous machine type murmur which can be heard at the left upper sternal border throughout the diastole and systole.

Thus, the correct answer is option C. patent ductus arteriosus.