Heart pounding

[MikeyB56]

After waking up after sleeping on my back, when I turn and lay on my left side my heart pounds real hard for about 30 seconds and then returns to nomal.  I went to a cardiologist and we did the overnight heart monitor and although the symtom appeared the doctor did not find anything.  Symtoms went away for awhile and have now returned.  Any ideas??  

MikeyB56

[ed34]

Ive also noticed that it happened far more if I had just eaten. I know you shouldnt lay down after eating a meal but I wonder if the stomach actually touches the heart?
When I went for my nuclear scan, the technician said that a full stomach can get in the way of the heart image and block it. I'm going red as I type this, but it used to generate wind when this happened. So, can the heart be tapping against the stomach and kind of
gently shaking any gas free?

[Ken_PA]

I'd guess it won't show in a rate monitor, because it's beating harder, not faster. As to hwy it happens I don't know.

[ed34]

I had the same thing, but it was laying on my left or right side and I didn't have to be on my back first. Strange as it seems, this problem has totally vanished since stopping my beta blockers.

[RadioAstronomyObserver]

  I don't know if my problem is exactly identical as yours...  I wake up in the middle of the night with my heart pounding hard and at a higher rate then expected (75-ish).  Since it's not beating irregularly and it calms down after sitting up (62-ish) and taking a couple deep breaths I don't think much of it.  I'm also a light sleeper and am up often for other things such as noises from other people and weather.  I'm hoping someone will respond to your question which will give me a direction to look for an answer for my situation.