Abstract
Survival after out-of-hospital cardiac arrest treated by emergency medical technicians (EMT) with basic life support was studied in 4 communities with a combined population of 380,000. During a 2 yr period, 18(6%) of 321 patients with cardiac arrest were resuscitated and ultimately discharged from the hospital. This figure is compared with 55 (22%) of 253 discharged in adjacent suburban communities with paramedic services. The evident factor accounting for the differences in survival rates was the time from collapse to receiving definitive care (advanced cardiac life support)-26 min in the EMT area compared to 7.8 min in the paramedic area.