When Dick Cheney felt those familiar chest pains early last Wednesday, he knew exactly what to do. Having already had three heart attacks, he headed straight for George Washington University Hospital and sought immediate medical attention. How many of us would react so promptly--or, heart specialists agree, so properly--to the chest pains that could be early signs of a heart attack? Time is muscle, doctors like to say; the longer you wait, the more heart muscle you can lose.
The trick with heart attacks is to know what to look for, and that's not always easy. Cheney experienced the classic...