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Doctor insights on: Why Do Vasodilators Cause Tachycardia And Palpitation

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Why do vasodilators cause tachycardia and palpitation?

Why do vasodilators cause tachycardia and palpitation?

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. ...Read more

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Dr. Oscar Novick
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Palpitation (Definition)

Palpitations are an awareness of extra heartbeats which most of us have. The sensation can be single or multiple and can sometimes last minutes. Different people may feel other symptoms along with them such as dizzy, lightheaded or short of breath. The palpitations are almost always atrial or ventricular premature beats. Usually benign but they are also ...Read more


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I occasionally get palpitations and mild tachycardia (max 108) upon standing. No explanation after testing. Could sedentary lifestyle cause this?

I occasionally get palpitations and mild tachycardia (max 108) upon standing. No explanation after testing. Could sedentary lifestyle cause this?

Probably normal: however there is a disease of the autonomic nervous system called positional orthostatic tachycardia (POTs) which could play a role. In addition the medications you are taking could cause this as well. Ask your physician to evaluate your autonomic system if this becomes a clinical problem for you. In the meantime hydration is key to management. ...Read more

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7 months post large pericardial effusion. Weaned offcolchine. Takingverapimel to control tachycardia palpitations. What can cause palp to start again?

7 months post large pericardial effusion. Weaned offcolchine. Takingverapimel to control tachycardia palpitations. What can cause palp to start again?

See your MD: Your doctor can send you to cardiology to find out. The verapamil can slow down tachycardia and can block the common, regular pathway, but not alternative electrical pathways. Your cardiologist can find out. Also reconsider young lung medicine and either change or adjust dose especially of albuterol if you find it may be doing it. ...Read more

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I ve ovarian cysts 7yrs ago. Now lm having palpitations n tachycardia, malaise for de past 5mths.Dr suggest hyperthyroidism can it be the cause?

I ve ovarian cysts 7yrs ago. Now lm having palpitations n tachycardia, malaise for de past 5mths.Dr suggest hyperthyroidism can it be the cause?

Hyperthyroidism: Yes, hyperthyroidism can certainly be the cause of your symptoms. You need to follow up with your doctor to make the diagnosis and get treatment, and hyperthyroidism untreated can cause severe problems. ...Read more

Vasodilator (Definition)

Blood vessels have the capability of increasing or decreasing their diameter. When a blood vessel dilates, it generally leads to lowered blood pressure. Drugs that cause this are termed vasodilators. These can act on arteries or veins. Some classes of vasodilators include nitrates, calcium channel ...Read more


Dr. Jerome Zacks
604 doctors shared insights

Palpitations (Definition)

Heart palpitations are a clinical finding in which a person feels his heart beating strongly, feels his heart beating fast, or both. This can occur with anxiety disorders or heart conditions including ...Read more