Cardiology opinion and maybe echo would allay all your concerns I'm sure. Good luck! Would probably be a bit of a wait on NHS but could prob see someone locally in a week or two if you're happy to pay....
ECG gives good info on electrical activity in the heart particularly in respect of pattern of electricity passing through the heart muscle,rhythm and - to some extent - structure of the chambers of the heart
You've probably just got an innocent flow murmur and are absolutely fine to run but you can only really comment on the flow of blood across valves ( ie exclude serious causes of murmur) with an echo
Did the doc say what phase of heart sounds he heard the murmur during?
Haven't posted at all much recently but have been stalking on and off - thought I had to put finger to keyboard to congratulate Jools on that startling time. MONSTER !!
Once you've returned to planet earth - would be fascinated to hear from you what you think has made the biggest contribution to your awesome progress. Beyond lots of years of hard work and dedication that is...
Difficult to compare the data I suspect for arrests in these two distinct populations. I'd have thought the couch potato who has a typical VF arrest in an already compromised floppy heart ( and for whom the most critical thing that is going to save them is an early DC shock) is very different to an "athlete" who maybe has a different type of arrhythmia leading to arrest ( for whom the likelihood of survival is pretty slim unfortunately since shock prob won't work)
the good news is most of these collapses during races are simple faints and there's no issue of any heart problem. Of course there will be exceptions like the poor chap at Ealing