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I know nicotine is a vasoconstrictor--does raise the heart rate?

1 doctor weighed in
Dr. ALADIN MARIANO
Surgery - Thoracic

In brief: Yes and no

As nicotine constricts the coronaries, it also increases vascular resistance to blood flow.
For the heart muscle to receive adequate blood flow , it has to increase heart rate so that per unit of time and rate, diminished blood flow is compensated. Subsequently, cardiac output increases and blood pressure will also increase. A severely high BP may in time slow down heart rate as a reflex mechanism.

In brief: Yes and no

As nicotine constricts the coronaries, it also increases vascular resistance to blood flow.
For the heart muscle to receive adequate blood flow , it has to increase heart rate so that per unit of time and rate, diminished blood flow is compensated. Subsequently, cardiac output increases and blood pressure will also increase. A severely high BP may in time slow down heart rate as a reflex mechanism.
Dr. ALADIN MARIANO
Dr. ALADIN MARIANO
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