S4 Heart Sounds Page
Welcome to our S4 heart sounds page. On this page we provide a definition and then we compare s4 heart sounds with a normal heart sounds and then s4 to s3, using audio recordings and text. Finally, there is a link to the training lessons available on this site.
What is an S4 Heart Sound?
Fourth heart sounds are low in frequency, occurring just before the first heart sound. It is best heard with the stethoscope's bell. The S4 heart sound creates a cadence which is like the word 'Tennessee', where the syllable 'Ten' is S4.
Normal vs S4 Heart Sound
Compare normal heart sounds vs S4 heart sounds.
S4 Heart Sound
Listen for a short, low frequency sound early in diastole. Try to match the cadence to 'Tennessee'.