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Heart Sounds & Murmurs
Techniques: Heart Sounds & Murmurs
Third & Fourth Heart Sounds
A triple rhythm in diastole is called a gallop and results from the presence of a S3, S4 or both.
If originating from RV
Third Heart Sound S3
Less commonly, valvular regurgitation and left to right shunts may also result in a S3 due to increased flow.
May be normal physiological finding in patients less than age 40.
Fourth Heart Sound S4
In patient with mitral regurgitation, suggestive of acute onset of regurgitation due to the rupture of the chorda tendinae that anchor the Valvular leaflets.