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A 30-year-old female asked:

I go to bed relaxed, then just as i'm drifting off i'm awoken because my heart makes a huge thumping palpitation feeling. every single time i try to sleep and i'm drifting off. what causes palpitations as falling asleep? thank you?

1 doctor answer2 doctors weighed in
Dr. Donald Colantino
Internal Medicine 62 years experience
First you should determine whether you're experiencing a forceful normal beat or having actual abnormal heart rhythm during those symptoms. lying on your left side often makes the heart beat seem quite forceful. Some people when half awake and half asleep do get jolts of muscular activity which can excite the heart rate. I recommend wearing a heart monitor to record heart activity during symptoms

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