A preterm infant has a continuous machinery murmur and bounding pulses. What is the most likely diagnosis?
Answer and explanation
Correct answer: D. Patent ductus arteriosus
- Step 1: The picture of a continuous machinery murmur with bounding pulses fits Patent ductus arteriosus.
Answer
Patent ductus arteriosus.
Why not the others: 'Ventricular septal defect': it gives a pansystolic murmur at the lower left sternal edge. 'Coarctation of the aorta': it gives weak femoral pulses and an arm-leg pressure gap. 'Aortic stenosis': it gives an ejection systolic murmur with a slow-rising pulse.
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