A higher-pitched, shorter sound marking the start of diastole. It is produced when the semilunar valves (aortic and pulmonary) close. Summary of Differences
To maintain a healthy heart and a normal "lub-dub" sound, it's essential to: heartbeat sound lub dub
—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 A higher-pitched, shorter sound marking the start of
The heartbeat sound "lub-dub" is a familiar and reassuring sound that indicates a healthy heart rhythm. Here's some helpful content related to this topic: Purpose: These valves close to stop blood from
A sharper, higher-pitched, shorter snap. Think Dub . What is happening: The Semilunar valves are closing.