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Pronunciation: pre-sfig'mik

Definition: Preceding the pulse beat; denoting a brief interval following the filling of the ventricles with blood before their contraction forces open the semilunar valves, corresponding to the isovolumic contraction period.

[pre- + G. sphygmos, pulse]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.