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Webster 1913 Edition
Hemisystole
Hemˊi-sys′to-le
,Noun.
(Physiol.)
Contraction of only one ventricle of the heart.
☞ 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.