| a u s c u l t a t i o n t u t o r |
Mid Systolic Click
This click is heard at the apex in mid or late systole; it may be intermittent. It is unchanged by respiration,
but can be delayed or abolished with increased LV cavity dimension following a squat from standing or
raising the legs of a supine patient. The click may first become apparent or, if already audible, will move
toward the S1 as the LV cavity dimension decreases with standing or a Valsalva. It is sometimes
associated with a late systolic murmur of mitral insufficiency. Most individuals are otherwise normal,
although mitral prolapse occurs with increased frequency in Marfan syndrome and myxomatous mitral
valve changes.
This click is heard at the apex in mid or late systole; it may be intermittent. It is unchanged by respiration,
but can be delayed or abolished with increased LV cavity dimension following a squat from standing or
raising the legs of a supine patient. The click may first become apparent or, if already audible, will move
toward the S1 as the LV cavity dimension decreases with standing or a Valsalva. It is sometimes
associated with a late systolic murmur of mitral insufficiency. Most individuals are otherwise normal,
although mitral prolapse occurs with increased frequency in Marfan syndrome and myxomatous mitral
valve changes.
t h e h e a r t
| Normal Cardiac Cycle |
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