Question

McGee (2018) has found evidence that the best screening for an abnormal S2 is the ability to hear which of the following on auscultation?

Audible inspiratory splitting that persists when the patient is laying down

audible expiratory splitting that persists when the patient is in left lateral decubitus

audible expiratory splitting that persists when patient sits up.

audible expiratory splitting that persists when patient squats

Answer 1

S2 is the second heart sound heart during closure of both aortic and pulmonic valves.

But it is slipts on inspiration and single on expiration.

S2 is the combination sound of A2 (aortic closure) sound and P2 (pulmonic closure).

Usually auscultation of heart sounds should be done with patient making comfortable and relaxed in supine position. Or in situp.

Evidence that the best screening for an abnormal S2 sound is

• Answer is audible expiratory splitting that persists when patient sits up.