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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Increase In The Heart Beat While Sleeping Rather Than While Sitting?

Hello,

I have HCM and an implantable ICD from 2009 - they are both being managed well and I go for checkups every three months. I just have one question, I have nticed that if I am lying down my pulse tends to run a bit quicker (70-75bpm) rather than if I sit up on the edge of the bed or in a chair, then it is consistently around 60. Could you let me know if this is something you have heard of before and what my be the cause of this phenomenon? I am overweight (but trying) and my last blood workup (three days ago) was perfect, thank God. Please let me know and thank you.
Fri, 26 Jun 2015
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Cardiologist 's  Response
Hello. I read and understood your concerns.

During sleep, there is a phase which is called rapid eye movement (REM) phase. During REM phase, there is a flush of catecholamines in the system (adrenalin) which are responsible for elevated heart rate. At this regard, my opinion is that it is not concerning.

I hope I was helpful. Take care
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What Causes Increase In The Heart Beat While Sleeping Rather Than While Sitting?

Hello. I read and understood your concerns. During sleep, there is a phase which is called rapid eye movement (REM) phase. During REM phase, there is a flush of catecholamines in the system (adrenalin) which are responsible for elevated heart rate. At this regard, my opinion is that it is not concerning. I hope I was helpful. Take care