Lub Heart Sound: !!hot!!

Before we can understand the sound, we have to understand the stage. Your heart is divided into four chambers:

While an S3 can sometimes be normal in young athletes or children (whose hearts are hyperdynamic and filling fast), in older adults, a prominent S3 is often a sign of heart failure. It suggests the ventricle is stiff or overloaded with fluid, causing the blood to slam into the walls of the heart chamber with audible force. lub heart sound

But did you know a healthy heart actually has three phases? The third phase is quiet—so quiet you usually can't hear it without a stethoscope. It is called , or the "ventricular gallop." Before we can understand the sound, we have

In an age of echocardiograms, MRIs, and advanced blood tests, one might wonder why doctors still wear stethoscopes around their necks. But did you know a healthy heart actually has three phases

Because the Mitral valve (on the left side) closes slightly before the Tricuspid valve (on the right side), the "Lub" is actually a split second fusion of two sounds. However, to the naked ear, it sounds like a single, strong thud.