Study: 911 is best call to make if heart attack strikes

Victims treated by paramedics obtain life-saving treatment faster than hospital walk-ins, according to data from a professor at UCLA. Ambulances equipped with devices that allow paramedics to more quickly diagnose serious heart attacks has sharply reduced the time it takes for patients to receive life-saving treatment, officials said. When patients walk into emergency rooms on their own, long waits can delay diagnosis and treatment, according to health officials.