I agree with Ice4fun! In order to get the right answer to your questions; You will have to ask more direct questions or use Google lol
As far as your heart condition, if you are cleared by your Doctor you should be good to go ;)
The ball is in your court how much personal information you would like to share with a SP. Personally, I would like to know of certain medical conditions that could potentially affect the intimate moments I am sharing with someone. However, that is just my personal preference and I can be certain it does not apply to every SP!!
Enjoy Your New Adventure :)