PVCs? Or symptoms resulting from running

[RogerInTexas]

I had a CABGx5 in 2001, which resulted from the inadvertent detection of a dangerous arrhythmia pattern.  Now I'm experiencing what I assume to be PVCs, but only at night while I'm at rest and for a couple of hours after I arise.  When I'm exercising they never occur.  My cardiology NP has no explanation and no concerns, since I recently underwent an ECG and an ultrasound, neither of which revealed anything negative.  The pattern is invariably either "beat, skip, beat, skip, beat, skip, etc." or, more frequently, "beat, beat, skip, beat, beat, skip, etc."  Because the pattern is somewhat similar to the arrhythmia I experienced in 2001, I was alarmed at first, but am now thinking that, since I was a runner for decades, my body is going into a state where less blood is required, so somehow my cardiac system determines this and reduces its workload.  Is this possible?

[RogerInTexas]

Thanks, Ken.  The reason I'm concerned is that I've developed an insufficient blood supply in my left leg over the past couple of years that's become almost disabling when I try to walk a distance or mow my yard.  An ABI confirmed the problem, and I'm about to undergo a computerized tomographic angiography to locate and determine the severity of the blockage, followed in all likelihood by arterioplasty, stent(s) or surgery.  After reading extensively about PVCs, I suppose that's what's happening to me, but it seems odd to me that it only occurs from about midnight to 9 or 10 a.m.

[kenkeith]

My cardiologist stated that what is thought to be a skipped beat by an individual  is often an early beat.  The difference would be reflected in the cardiac output.  CO is stroke volume time heartbeat for one minute. Obviouisly a skipped beat (s) would significantly reduce the CO, but compensation as you suggest would not be arrhthmia, it would be reduced regular heart rate..

Nevertheless, it is an irregular beat, and the underlying cause should be diagnosed. Your doctor is aware and no concern so it may not be anything serious...just annoying.