In the event of a heart attack it has been recommended to immediately take a shot of Scotch. I read this a while back somewhere. It explained why this helps. (It immediately dilates your veins/arteries or something like that?) I have seen this help someone who was having chest pains/possible heart attack. So always have some Scotch on hand.
Disclaimer: I am not a doctor. Do what you feel you have to. Consult a doctor if you are so inclined. Anything on my blog is information I'm passing on to you, it's not meant to diagnose or anything like that. God bless you.