Abstract
The number of survivors of out-of-hospital cardiac arrest or sudden death has increased substantially in recent years. Emergency-care systems that promote bystander cardiopulmonary resuscitation, enable emergency medical technicians to arrive at the scene within four minutes after collapse of the victim, and permit definitive medical care by paramedical personnel within eight minutes of collapse can allow up to 30 per cent of patients to be discharged to their homes.1 In cities like Seattle, where a great deal of community effort and resources have been mobilized to resuscitate victims of out-of-hospital cardiac arrest, the percentage of successful initial resuscitations has approximately . . .