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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes A Sudden Increase In Heart Rate And Lightheadedness?

Hey, I am a 20 year old guy, a little overweight but in pretty good shape. I was mowing the lawn, and I pulled the cord hard to start the mower. Immediately afterwards, my heart started beating at about 240 bpm. I timed it myself and used my Fitbit. I got lightheaded and sat down. My heart continued beating like so for about 3 min and then it went away like nothing happened. What could this be?
Wed, 28 Jun 2017
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General & Family Physician 's  Response
Hello,
This could be a serious problem with your heart. Please see a doctor as soon as possible and do not do any strenuous exercise until this is evaluated.
Regards
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What Causes A Sudden Increase In Heart Rate And Lightheadedness?

Hello, This could be a serious problem with your heart. Please see a doctor as soon as possible and do not do any strenuous exercise until this is evaluated. Regards