Heart Attack Survival Rates Affected by Arrival Time at Hospital

The American Heart Association has found that heart attack patients who present to a hospital at night, during the weekend, or on a holiday have a 13% increased risk of dying compared with heart attack patients who are admitted during regular hours. The authors found that, on average, it takes 56 minutes for patients arriving at the ER during regular work hours to receive the angioplasty procedure necessary to open their blocked blood vessel compared with an average of 72 minutes during evenings, weekends, or holidays.
Circulation, July 2014