hemisystole

Hem`i*sys"to*le, n. (Physiol.) Defn: 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.

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