An ST Elevation Myocardial Infarction (STEMI) is a form of heart attack. It is important that those who experience a STEMI be treated within 90 minutes of the first onset of symptoms. Our emergency department is one of only a few designated cardiac receiving centers with emergency treatment times that beat the national average. Orange County residents with chest pain who call 9-1-1 will automatically be directed to a STEMI center, where cardiac expertise and facilities are ready 24 hours a day, seven days a week. The STEMI receiving team works in conjunction with the MemorialCare Heart and Vascular Institute at Saddleback Memorial Medical Center to provide the best cardiac care available.