Abstract: An emergency response system for detecting, locating, and responding to a predetermined medical emergency, such as sudden cardiac arrest/sudden cardiac death, in a person being sensed for the predetermined emergency, and wherein the medical emergency can be treated with portable medical equipment, such as an AED machine for treating cardiac arrest/sudden cardiac death, includes a reader worn by the person being sensed for reading a dysfunction indicating the existence or imminent existence of the emergency condition and a sensor for determining when an emergency condition is read and producing an alarm signal. A processor activates a personal alarm at the location of the person suffering the emergency, now the victim, which indicates the emergency and the victim's location to those in the victim's immediate area.