First Heart Sound (Minimal Split) - Auscultation Lesson

On occasion the first heart sound can be made up of two separate sounds separated by a very small interval (20-30 milliseconds). The Mitral component (caused by closure of the Mitral valve) comes first and is louder than the Tricuspid component (caused by closure of the Tricuspid valve). A minimally split first heart sound is a normal variation of the first heart sound.

Listen

virtual auscultation of patient torso




auscultation position of patient

The patient's position is supine.

Visualize

Observe




? onAr:0 | v:0 | onPs:0
pu? False | pv:1
pLen: 0 | nLen 1 | cCode:
| debug: | uGeoCtr: 0 | localNlen: 1;





An error has occurred. Please reload the page or visit our other website, Practical Clinical Skills. Reload 🗙