
-
80
-
(7) Aortic valve ejection murmur
(8) Mid-systolic click
(9) Mitral valve deviation click
・
murmur
At A, the break-up sound heard immediately after
the I sound is an ejection murmur.
It can be heard due to the blood volume passing
through the aortic valve and when the blood flow is
fast.
At M, it is sometimes heard during mid-systole. This
is due to a minor gap that develops mid-systole in
the cuspis anterior and posterior to the mitral valve.
Occasionally, two or more clicking sounds can be
heard.
At M, during mid~late systole, a regurgitant murmur
can be heard. This murmur occurs because the
closure of the mitral valve deviates, as in case 8.