Which of the following best describe Anrep effect ?
Correct Answer: Increased after load increases cardiac contractility
Description: Anrep effect: - Increased afterload increases cardiac contractility. Autoregulation method in which myocardial contractility increases with afterload. It was experimentally determined that increasing afterload caused a propoional linear increase in ventricular inotropy For instance, when LV has to pump against the aoa pressure, & the aoa pressure is after load on LV. If the after-load increases, then against the increasing resistance LV has to contract & eject out the blood, therefore it needs to go on increasing its contractility, this effect has been called as the Anrep effect. Such contractions are called as - Auxotonic contraction.
Category:
Physiology
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