Thanks for sharing GC.

I posted in the other thread, but copying to here:

I had what I have had (by a cardiologist) called supraventricular tachycardia (SVT) events, two of them, one on a saturday and one on the following tuesday during 2013. the saturday episode was during a long road race, about mid way through. It was the first warm race of the year and I'm pretty confident I was dehydrated. i was pedaling along in the group at a hard pace, when it felt like my heart flipped in my chest and I couldnt breath. I knew one of my cycling buddies was in the pack further back, so I started drifting back to him to tell him something was wrong and by the time I got to the part of the group he occupies, it was over. I continued (probably stupid) was fine, and even broke away from the bunch on the last lap in a secondary break that lasted to the end.

The second episode was 3 days later during a hard workout, I was on the 3rd 8 minute rep of the pacing workout when boom, same sensation. I stopped immediately and soft pedaled home. I was not wearing an HRM during either, so no HR #s or durations, they were both perceived as a feeling like my heart flip flopped in my chest, that my HR raced momentarily, then returned to normal. It scared the **** out of me and I have hypochondriac tendencies perpetuated by being present at two races where very experienced elite racers died of cardiac arrest (one was a teammate who was in his late 20s and was miraculously resuscitated) so I started seeing a cardiologist. We did stress test, I wore a HR monitor for a week including training and racing trying to duplicate what occurred, and everything tested "normally" so it was written off as likely dehydration induced episode, and the cardio told me to do what I do. I've done tons of research on the topic, none really cheered me up on the matter.

I've worn a HRM since for a bunch of reasons including if it happens I'll have record to show a doc., but thankfully it hasnt, but it's been in the back of my mind a few times and probably caused me to govern efforts on occasion.

this might end up being a 2 person thread until someone busts in and says to buy a powermeter :-), or if you have SVT, dont go to Europe.