I wanted to bring this to your attention. Although the information in ACT F.A.S.T. is correct...the info in the link to what to do for a heart attack, in particular, coughing, is not accurate. It's another internet urban legend that got it's start in 1999 and is still making the rounds today.
PLEASE READ THIS:
http://www.snopes.com/medical/homecure/coughcpr.asp
It may save your life.