Delay From Symptom Onset to Hospital Presentation for Patients With Non--ST-Segment Elevation Myocardial Infarction.

The article investigates the delay from the onset of symptoms to hospital presentation for patients with non-ST-segment elevation myocardial infarction (non-STEMI) in 104,622 cases at 568 hospitals in the U.S. from January 1, 2001 to December 31, 2006. The American College of Cardiology/American Heart Association guidelines suggest calling 911 for those experiencing acute coronary syndrome if symptoms do not improve after five minutes. The results show a median delay time of 2.6 hours and cite older age and female sex among reasons for longer delay time.