Question

during cardiac auscultation you hear a blowing sound occurring immediately after s2 at the left second intercostal space. which is the most likely cause?
aortic valve regurgitation
aortic valve stenosis
pulmonic valve regurgitation
pulmonic valve stenosis

Explanation:

1. S2 is the second - heart sound associated with the closure of the semilunar valves (aortic and pulmonic).
2. The left second intercostal space is the area for auscultating the pulmonic valve.
3. A blowing sound immediately after S2 in this area is characteristic of pulmonic valve regurgitation. Aortic valve sounds are best heard in different locations. Stenosis usually presents with a different type of murmur (a harsh, systolic murmur in most cases).

Answer:

C. Pulmonic valve regurgitation