Dick Cheney's heart condition has been the subject of speculation and controversy from the moment George W. Bush picked him as his running mate. Cheney had suffered three heart attacks in 10 years, his first at age 37, and in 1988 underwent quadruple-bypass surgery to relieve blockages in his coronary arteries. From a medical perspective, the news last week that he had suffered a fourth heart attack wasn't all that surprising.
Indeed, Cheney is so attuned to the vagaries of his heart that when he was awakened last Wednesday around 3:30 a.m. by a discomfort in his chest, he realized at...