HI, Just Wondering If I Can Get A Answer About

HI, just wondering if I can get a answer about something. I'M about to start the police academy and I was born with a heart murmur and to my understanding is have to be tased and I was worried about it affecting it. I think I might of grown out of it but I'm not sure. How can they test to see if I still have one and so you think the taser could be potentially dangerous to my health.