Auto lead testing
I have an ICD and have had 15+ shocks, and am nearly 100% paced. During check ups when they test my leads, i am very sensitive and feel as though i am about to pass out or get a shock (because during the test, they turn off my pacing and i can feel loss of blood in my head quite quickly).
For years i would randomly feel as though i was about to get a shock, but wouldnt and nothing would show up as an episode on my interogations at the time i documented the event.
Recently, a tech at Mayo Clinic Rochester - discovered/suspected that my symptoms were due to the ICD auto lead testing that occurs, since my symptoms were the same as when she tested my leads in the clinic, and so she turned off auto testing. And problem solved! Quality of life went up significantly! I suffered with that issue for so many years, bless this woman who listened to me and put together the puzzle!