A cardiac arrest alert system and method are provided that can identify the onset of a Sudden Cardiac Arrest and that, via audio, visual and electronic alerts, can directly inform a rescuer of the need to get a defibrillator to the victims location as rapidly as possible. In one embodiment, the system can be used in conjunction with a specifically paired portable AED which can then emit audio and visual alerts that its services are required by the SCA victim. In other embodiments, the system makes use of a subcutaneous sensor component which is paired with and linked to an external monitoring/receiver device that emits the audio and visual alerts in addition to alerting EMS with the location.
