By MATTHEW HOLT Strap in for the tale of why your hero is spending most of his life down YouTube rabbit holes of cardiology videos while blundering his way around many many medical centers and exposing many problems with American health care even before he gets close to the operating table. Yes it’s Matthew Holt’s pre-surgical complications – the complications that have arisen before he even gets his failing aortic valve fixed. And yes this is the last for now of a multi-parter! Part 1, Part 2, Part 3, Part 4 Part 5 By now I have met with expert physicians and their teams at 5 major...