Well, the important thing is that you were admitted after the ambulance ride, so more of it will be covered by insurance. ;-)

I jest. I'm glad you're on the mend.

The more I read, the more I realize we can injure our cardio and respiratory system even though we're in good shape. There are several guys in my bike club who have gotten A-Fib out of nowhere, they were super-fit athletes, then hit 60-something and their heart just couldn't take that any more. Next thing you know pacemaker + eBike.