2 doctors weighed in:
What do lub and dub mean when you listen to your heart?
2 doctors weighed in

Dr. Andrew Turrisi
Radiation Oncology
1 doctor agrees
In brief: You have four
Valves the work together: first sound (lub) is closing mitral and tricuspid valves, the ones separating atria from ventricles (l&r), the dub varies with breating the second sound splits with breathing, as the closure of pulmonic valve and aortic valve are slightly separated.

In brief: You have four
Valves the work together: first sound (lub) is closing mitral and tricuspid valves, the ones separating atria from ventricles (l&r), the dub varies with breating the second sound splits with breathing, as the closure of pulmonic valve and aortic valve are slightly separated.
Dr. Andrew Turrisi
Dr. Andrew Turrisi
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