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Q. Why does my heart rate increases very fast on exercising?

Answered by
Dr. Hafiz Muhammad Hassan Shoukat
and medically reviewed by iCliniq medical review team.
This is a premium question & answer published on May 09, 2018 and last reviewed on: Oct 09, 2018

Hello doctor,

I am 19 years old, seemingly healthy with a history of anxiety. I recently had CBC, thyroid, kidney, cholesterol, and glucose test and all came back normal so I am not anemic or hyperthyroid. For several years, when I go from sitting to standing my heart rate increases to about 110 and I get dizzy initially but I feel back to normal after about 30 seconds. My other symptom is when exercising my heart rate increases very fast very quickly. It often gets to 170. I feel fine when it does, and it comes down when I rest, but why does it get so high during exercise? If I had SVT or AFIB, would the heart rate not stay above 100 even when I quit exercising? What does it sound like I have? Does this sound SVT or POTS? Currently, I am taking Luvox 200 mg.

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Hi,

Welcome to icliniq.com.

As you are concerned about this HR (heart rate) being atrial fibrillation or atrial flutter or SVT (supraventricular tachycardia), first, HR is usually more than 130 to 140 in these conditions, especially in SVT. Secondly, these disorders do not have any specific relationship with exercise or rest, meaning this does not start with exercising. It can kick in while resting all off sudden and can convert back any time. Your pattern is more consistent with sinus tachycardia. You may need a tilt test for diagnosis. Talk to your doctor. In addition, I would recommend you remain well hydrated and use thigh-high TED hose. This will help you with symptoms.

For more information consult an internal medicine physician online --> https://www.icliniq.com/ask-a-doctor-online/internal-medicine-physician


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