Systolic Murmurs

Posted in Clinical Education
Learn about systolic murmurs.
PCG and graphical representation of a systolic murmur

Overview

Systolic murmurs are murmurs heard between the first heart sound (S1) and the second heart sound (S2). Systolic murmurs are further characterized by the timing of the murmur within systole- early systolic, midsystolic, late systolic, and holosystolic murmurs. 

Showing graphic that represents early systolic murmurs

Early systolic murmur

Early systolic murmurs begin with S1 and end in middle or late systole. 

Graphic representing Midsystolic murmurs begin after S1 in early systole and ends in late systole

Midsystolic murmur

Midsystolic murmurs begin after S1 in early systole and ends in late systole. Their point of highest intensity is located near the middle of systole.

Graphic showing late systolic murmurs begin during the latter half of systole and extends to S2

Late systolic murmur

Late systolic murmurs begin during the latter half of systole and extends to S2. 

Graphical representation of holosystolic murmurs begin with the first heart sound (S1) and end with the second heart sound (S2)

Holosystolic murmurs

Holosystolic murmurs begin with the first heart sound (S1) and end with the second heart sound (S2), without a large variation in intensity (plateau). The sound intensity is present and almost constant between S1 and S2

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