Portable defibrillator-monitor-recorder with built in advisory protocol. Unit is designed for use by ambulance crews and cardiac arrest teams where a physician will not be available to determine if defibrillation is appropriate. System provides lead II ECG monitoring only, recording and logging of a resuscitation event for later review. This system provides up to 360 joules output and has an external battery charger available. Unit is sometimes referred to as an "Automatic Advisory Defibrillator" or "AAD". Unit may be line powered with an optional battery substitute pack.