3 doctors weighed in:
Why do vasodilators cause tachycardia and palpitation?
3 doctors weighed in

Dr. Bart Denys
Internal Medicine - Cardiology
1 doctor agrees
In brief: Vasodilators
Vasodilators do what the name implies: these compounds dilate blood vessels, resulting in a decrease in blood pressure.
As the baroreceptors detect this, they command the autonomic nervous system to increase adrenaline output. This, in turn, increases heart rate and increases cardiac irritability.

In brief: Vasodilators
Vasodilators do what the name implies: these compounds dilate blood vessels, resulting in a decrease in blood pressure.
As the baroreceptors detect this, they command the autonomic nervous system to increase adrenaline output. This, in turn, increases heart rate and increases cardiac irritability.
Dr. Bart Denys
Dr. Bart Denys
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Dr. John Garner
Internal Medicine - Cardiology
In brief: Compensation
The heart has to deliver a certain amount of blood to the body for it to function.
Vasodilators decrease the amount of blood returning to the heart, thus requiring the heart to beat harder and faster to keep up the supply. If you have this tachycardia, you're on too much vasodilator and should see your doc to discuss.

In brief: Compensation
The heart has to deliver a certain amount of blood to the body for it to function.
Vasodilators decrease the amount of blood returning to the heart, thus requiring the heart to beat harder and faster to keep up the supply. If you have this tachycardia, you're on too much vasodilator and should see your doc to discuss.
Dr. John Garner
Dr. John Garner
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