"When Eisenhower had his heart attack, heart disease was the No. 1 killer of Americans, and it remains so today. But more deaths would occur without these advances. Men and women with chest pain are now told to call 911, setting off an emergency response that often results in medical care within minutes, not the hours as in Eisenhower’s case.Emergency medical technicians sent to the scene can transmit electrocardiograms to a base hospital." (Quoted from article)