A 33-year-old member asked:
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what are the factors that affect cardiac output?

1 doctor answer
Dr. Francis Uricchio
37 years experience Cardiology
Numerous: Cardiac output is determined by the product of heart rate and a stroke volume (the amount of blood ejected with each heartbeat). Stroke volume is affected by something called contractility which is the strength of the heart muscle contraction. Contractility can be improved with sympathetic tone (epinephrine) or medications (dobutamine and others).
Answered on Oct 1, 2013
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