I had a medical episode last weekend that freaked me out a bit, and really through my wife for a loop.
Here's the scenario:
I ran last Sunday morning. It was my last and longest run before a HIM next weekend. Ran two hours, felt ok afterwards. Cleaned up, had a small snack, probably didn't go through a very rigourous recovery protocol, etc.
Took the family out to the Renaissance Faire. While standing outside I started to feel a bit light headed. The last thing I remember was thinking, "whoa, I haven't fely like this since I had what was presumed to be a seizure twelve years ago when I was out of shape and 50 pounds heavier". the next thing I remember I was being loaded into an ambulance after being out for more than ten minutes.
The ER doctor ran an EEG, blood test, etc. He did not think it was a seizure, but diagnosed it as "convulsive syncope". My brother in law is also an ER doc, and agreed with the diagnosis.
The problem is I'm not buying into the rationale. I'm being told that because I do this crazy aerobic endurance stuff, my blood pressure and heart rate are so low that there's very little margin for error (lying in the hospital bed after the event my heart rate was in the low 40s). They basically just said that everyone's heart rate fluctuates, and since mine is so low I'm at risk of it fluctuating down and not pumping enough oxygenated blood while at rest. I was given no follow-up actions, other than told "when you feel that coming on, get on the ground fast".