1 doctor weighed in:

How does vasoconstriction effect heart rate?

1 doctor weighed in
Dr. Dan Fisher
Internal Medicine

In brief: Epinephrine

Complex interaction.
If you were to assume that vessels and heart were entirely independent, you might postulate that heart rate could slow down after vasoconstriction since there is less tubing to pump through. But the chemicals that mediate vasoconstriction also mediate heart rate and force of contraction so that they usually rise in parallel.

In brief: Epinephrine

Complex interaction.
If you were to assume that vessels and heart were entirely independent, you might postulate that heart rate could slow down after vasoconstriction since there is less tubing to pump through. But the chemicals that mediate vasoconstriction also mediate heart rate and force of contraction so that they usually rise in parallel.
Dr. Dan Fisher
Dr. Dan Fisher
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