Heart Sounds Made Easy!! S1 S2

At one time or another heart sounds were or still are confusing to everyone who has ever listened to them.  While most of us know what the normal S1 S2 sound like, sometimes there is some funkiness that throws the norm through the loop and into the realm of the "what the heck was that?". 

Location-- Location

Different landmarks tell us different information.  Plan and Simple! 

S1 is heard louder than S2over the apex when the MV and TV close. 

S2 is heard louder over the 2nd right and left intercostal spaces, when the AV and PV close.

Other Than Normal S2----

Loud Sound: Dilated Aorta, Dilated Pulmonary Artery 

Soft or Absent S2:  Aortic Stenosis, Pulmonic Stenosis, COPD