Right atrial pressure $(\mathrm{mm} \mathrm{Hg})$
-The dashed line in the figure illustrates the effect of

Question

Quizplus · Accepted Answer

[IV F 3 a (1)]. An upward shift of the cardiac output curve is consistent with an increase in myocardial contractility; for any right atrial pressure (sarcomere length), the force of contraction is increased. Such a change causes an increase in stroke volume and cardiac output. Increased blood volume and increased mean systemic pressure are related and would cause a rightward shift in the venous return curve. A negative inotropic agent would cause a decrease in contractility and a downward shift of the cardiac output curve.

Right Atrial Pressure (mmHg)(\mathrm{mm} \mathrm{Hg})(mmHg) -The Dashed Line in the Figure Illustrates the Effect of Figure

Right Atrial Pressure $(\mathrm{mm} \mathrm{Hg})$ -The Dashed Line in the Figure Illustrates the Effect of Figure