A third heart sound, or S3, is a low-frequency, extra heart sound that may be heard with a stethoscope right after the normal S1 and S2 heart sounds. S1 and S2 are the "lub-dub" sounds of a heartbeat ...

Auscultation Over the Tricuspid Area (the Left Lower Sternal Border) When you have completed your examination of the apex, move to the left lower sternal border. Tricuspid murmurs and some asymmetric ...

Blood flows through the heart and generates noises known as heart sounds. These noises occur due to heart valves opening and closing as the heart pumps blood. A doctor can gain valuable information by ...