A summation gallop is the sound heard when the following heart sounds are present

Question

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When both the pathologic S₃ and S₄ are present,quadruple rhythm is heard.Often,in cases of cardiac stress,one response is tachycardia.During rapid rates,the diastolic filling time shortens and the S₃ and S₄ move closer together.They sound superimposed in mid-diastole,and you hear one loud,prolonged,summated sound,often louder than either S₁ or S₂.This is called a summation gallop which is represented as S₁,S₂,S₃–₄.

A Summation Gallop Is the Sound Heard When the Following