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(19) Acute mitral insufficiency
(20) Pulmonary insufficiency
At M, a murmur is acutely heard during early systole.
In most cases, it occurs due to ruptured chordae
tendineae accompanying a myocardial infarction.
The patient suffers from acute congestive heart
failure. The III sound is not so obvious.
At P, an ejection murmur during systole and a
regurgitant murmur during diastole can be heard.
As in the case of aortic insufficiency, the murmur
occurs because blood regurgitates from the
pulmonary valve into the right ventricle.
At T, a rumbling murmur can be heard during
mid-diastole.