Here is a study example discussing ventricular arrhythmia and Sleep Apnea
A few more
On this last one the conclusion of the study states:
"We report a case with nocturnal frequent PVCs and central sleep apnea syndrome. PSG demonstrated severe central sleep apnea syndrome including Cheyne-Stokes respirations. After nocturnal nasal oxygen therapy, the PVCs not only during sleep but also during the daytime significantly decreased and his symptoms disappeared."
GET A SLEEP STUDY
One last thing...just to recap
Do yourself a favor and get a sleep study done to determine if you have sleep apnea.
Google "Pvcs and sleep apnea" and read a plethora of studies showing the correlation between the two.
I have demonstrated to myself over the past year that when I don't use my cpap, the PVCs return. When I use my cpap they go away.
It can't hurt. Talk to your Dr and ask for a sleep study.