hemisystole [医] 半[减]收缩(心室)
Hemisystole \Hem`i*sys"to*le\, n. (Physiol.)
Contraction of only one ventricle of the heart.
Note: Hemisystole is noticed in rare cases of insufficiency
of the mitral valve, in which both ventricles at times
contract simultaneously, as in a normal heart, this
condition alternating with contraction of the right
ventricle alone; hence, intermittent hemisystole.