Loud S1

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LISTEN WITH HEADPHONES. Recording made with a Thinklabs One Digital Stethoscope. Listening in the aortic area at RUSB, S1 is much louder than s2, which is unusual. Causes of this include a short PR interval, as in this patient with ventricular pre-excitation, and a high left atrial pressure, as in mitral stenosis.

Contributor: Terry Bauch, MD, Geisinger Medical Center

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I compared it to the video of normal heart sounds & they're almost the same :/

bxxxl
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Why we need to auscultate aortic area to hear loud S1? Is there any evidence or source for this type?

kishanraj