Which of the Following is Least Likely to Increase Cardiac

Question

Which of the following is least likely to increase cardiac output?
A) Increased heart rate
B) Increased stroke volume
C) Increased venous return
D) Vagal discharge

Accepted Answer

Vagal discharge, which involves a decrease in heart rate, is least likely to increase cardiac output. The other options listed (increased heart rate, increased stroke volume, and increased venous return) all have the potential to increase cardiac output.