Which of the following statements address the concept of ventricular interdependence? I. When the size of the right ventricle increases, the opposite side decreases. II. An increased blood volume in the right pushes the interventricular septum to the left. III. An increased blood volume in the left ventricle increases the compliance of the right chamber. IV. A larger blood volume in the right
ventricle enhances left ventricular filling and stroke volume.
A. I, II only
B. I, III only
C. II, III, IV only
D. I II, III only
?ANS: A
A. Correct response: Because the right and left ventricles share the same space in the pericardium, and increase in the size, of one chamber requires a decrease in the size, shape and function of the other.
B. Incorrect response: See explanation A.
C. Incorrect response: See explanation A.
D. Incorrect response: See explanation A.
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