What Is Lub Dub | Sound

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What Is Lub Dub | Sound

The pause between the "dub" and the next "lub" is typically longer than the pause between the "lub" and the "dub." This represents the time the heart takes to fill with blood. What if it sounds different?

When doctors listen to your heart, they aren't just counting the beats; they are listening for the quality of these sounds. Variations can indicate different health states: what is lub dub sound

(ventricles squeeze, AV valves close) → DUB (ventricles relax, semilunar valves close) → pause (heart fills with blood) → LUB ... The pause between the "dub" and the next

But what exactly causes these two distinct sounds? Why doesn't the heart make just one sound? And what happens when "lub-dub" turns into something else, like a "whoosh" or a "click"? And what happens when "lub-dub" turns into something

: If valves don't close properly, it can create a "whooshing" or "swishing" sound known as a heart murmur .

The first sound, the "lub," is the louder and longer of the two. This sound occurs when the ventricles (the bottom chambers of the heart) contract to push blood out to the body and lungs.