I'm not sure of the correct terminology. But my dad had an episode about 2 weeks ago and went to the hospital where they said he was lucky to get there and not have a full blown heart attack. Now he has to go in for a stress test where I thought you just exercised while they monitored you but no he was told he would be given meds where it would make him feel like he was having a heart attack to see how his heart handled it. Has anyone been thru this, Does this sound right? Should I be worried, I'm 4 hrs away do I need to go with him?