5 doctors weighed in:

What influences cardiac output?

5 doctors weighed in
Dr. Francis Uricchio
Internal Medicine - Cardiology
3 doctors agree

In brief: Multiple things

Cardiac output is the product of heart rate in stroke volume.
Thus, an increase in heart rate results in an increase in cardiac output. Stroke volume can be affected by changes in preload, afterload, and contractility (strength of contraction). Preload is "priming the pump". Afterload is the resistance to ejection during systole (contraction).

In brief: Multiple things

Cardiac output is the product of heart rate in stroke volume.
Thus, an increase in heart rate results in an increase in cardiac output. Stroke volume can be affected by changes in preload, afterload, and contractility (strength of contraction). Preload is "priming the pump". Afterload is the resistance to ejection during systole (contraction).
Dr. Francis Uricchio
Dr. Francis Uricchio
Thank
Dr. Calvin Weisberger
Internal Medicine - Cardiology

In brief: Cardiac output

Stroke volume times heart rate equals cardiac output.
Stroke volume relates to myocardial contractility, vascular resistance, vascular volume, anemia and metabolic state. There are subcomponents to all of these.

In brief: Cardiac output

Stroke volume times heart rate equals cardiac output.
Stroke volume relates to myocardial contractility, vascular resistance, vascular volume, anemia and metabolic state. There are subcomponents to all of these.
Dr. Calvin Weisberger
Dr. Calvin Weisberger
Thank
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