Heartbeat Sound Lub Dub

By taking care of your heart, you can help ensure a normal and healthy heartbeat sound!

Shorter, higher, softer, at the start of diastole (relaxation). Clinical Significance heartbeat sound lub dub

It is so familiar that we often ignore it, yet this rhythmic double beat is one of the most complex and vital sounds in nature. But what actually creates that noise? It isn't the blood flowing, nor the heart "beating" like a drum. It is the sound of By taking care of your heart, you can

Don't forget the silence between the sounds. But what actually creates that noise

A low, slightly prolonged sound. Think Luuub . What is happening: The atrioventricular (AV) valves are closing.

—the aortic and pulmonary valves—located where blood leaves the heart. Purpose: These valves close to stop blood from leaking back into the heart once it has been ejected into the major arteries. nhlbi, nih (.gov) +3 Medical Significance Doctors use a stethoscope to listen to these sounds because they provide vital clues about heart health. While "lub-dub" is the standard rhythm, other sounds can occur: YouTube Heart Murmurs: Extra "whooshing" or "rasping" sounds between the beats often indicate turbulent blood flow, which may be caused by narrowed or leaking valves. Gallops (S3 and S4): These are additional low-frequency sounds that may be normal in young people but can sometimes signal heart chamber dilation or wall stiffening in older adults. YouTube +3 Would you like to know more about how