In persons with a hypofunctional heart (weak contractility), the cardiac output is partially
compensated for by
A) An increase in the right atrial pressure
B) An increase in arterial pressure
C) Increased cardiac contractility
D) Vasodilation driven by sympathetic stimulation
E) Decreased interstitial fluid pressure

Question

Quizplus · Accepted Answer

In persons with a hypofunctional heart, an increase in right atrial pressure can help compensate for decreased cardiac output by increasing venous return and preload, which can enhance stroke volume according to the Frank-Starling mechanism.

In Persons with a Hypofunctional Heart (Weak Contractility), the Cardiac