Second Heart Sound Page
Welcome to the second heart sound page. On this page we provide a descriptions, audio examples and links to lessons available on this site.
What is the Second Heart Sound?
The second heart sound is created when the aortic valve and pulmonic valve close. The second heart sound occurs at the beginning of diastole. It may have two audible components caused by the separated (in time) closing of the aortic and pulmonic valves. We provide two courses that cover second heart sounds, as described below.
Listen to Second Heart Sound
First and Second Heart Sounds
Normal first and second heart sounds.
S1 and Split Second Heart Sound
Second heart sound splitting during inspiration