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Old 07-27-2010
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Heart Effect of IV calcium bolus on cardiac output and venous return

In the diagram shown, the straight lines represent the cardiac output and venous return curves of a healthy individual. The effect of an increased blood volume state, such as immediately after a blood transfusion, is represented by the dotted line. In contrast to the increased blood volume state, delivering an intravenous calcium bolus would result in:
A. Increased total peripheral resistance
B. Higher equilibrium point
C. Decreased mean systemic pressure
D. Decreased cardiac output
E. Lower equilibrium point

Effect of IV calcium bolus on cardiac output and venous return-increased_blood_volume_venous_return.jpg
Click to enlarge
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