First Heart Sound - Loud

Usually, the first heart sound is slightly louder than the second heart sound when heard in the Mitral valve area...

In this case the first heart sound is much louder than the second heart sound. This can be produced by a thickened, but still mobile, mitral valve. Look at the anatomy tab to see the thickened mitral valve leaflets.

A very loud first heart sound can be an indication of mitral stenosis.

First Heart Sound - Loud
The recommended auscultation position for the stethoscope is the Mitral position. For this sound, use stethoscope's Diaphragm.


maneuver
The recommended patient position is Supine

Phonocardiogram

waveform
This waveform plots sound amplitude on the vertical axis against time on the horizontal axis.

Heart Animation

Lessons
left button        right button



Listening Tips
A synopsis of important sound features and timing for this abnormality.
S1: Increased intensity.
S2: Softer intensity than S1.
CaseID38
CourseID23
CourseCaseOrder1
ID24