I had a PT once that ran me through horrible exercises, someday I could barely get back out of bed again the next day. Anyway, during all of that she told me about her son, a minor, who had some heart conditions and she used an adjustment to his body, just under where his rib cage meets in the middle. I was there for leg pain that included all the way down one leg and a whole hip. Neuropathy was the best diagnosis they could come up with it. Which is why they dumped me on her. She suspected some scar tissue from way back in my medical history and did (as a last resort) a pinch pull that was very painful, right about same place. That's also where you would have had chest compressions. It worked on me, for 2 years. No pain at all. Then, it came back, and worse because I then had falls too. I think you are onto something, but I never could get her to do it to me again. She said she didn't remember doing it, two years later when it came back. Internal scar tissue can and does do a lot of things.