Best of luck for a speedy recovery Steelhauler.
I recently watched a news show which stressed the importance of being able to identify having a heart attack as all events aren't sudden and intense. Being knowledgeable about which hospitals in your area specialize in heart treatment can also make a world of difference in quality of treatment. I know thats difficult for OTR; but, if you are local, it sounds like good knowledge to have.
Statistics
Coronary heart disease is the No. 1 cause of death in the United States. Stroke is the No. 3 cause of death in the United States and a leading cause of serious disability.
Heart Attack Warning Signs
Here are signs that can mean a heart attack is happening:
* Chest discomfort. Most heart attacks involve discomfort in the center of the chest that lasts more than a few minutes, or that goes away and comes back. It can feel like uncomfortable pressure, squeezing, fullness or pain.
* Discomfort in other areas of the upper body. Symptoms can include pain or discomfort in one or both arms, the back, neck, jaw or stomach.
* Shortness of breath with or without chest discomfort.
* Other signs may include breaking out in a cold sweat, nausea or lightheadedness
Source:
http://www.americanheart.org