Patent ID: 8000787

Claim:
A defibrillator comprising: electrodes configured to be attached to a patient, to acquire data indicative of the patient's heart rhythm and to deliver a defibrillating shock if appropriate; a defibrillator control box connected to the electrodes; and on a portion of the defibrillator control box, a series of electronically-displayed graphics configured to prompt a caregiver to perform a sequence of steps appropriate for treating a victim of suspected cardiac arrest, a plurality of light sources positioned and configured so that illumination of each light source draws attention to a different one or a different group of the graphics in the series of electronically-displayed graphics; wherein the defibrillator is capable of having its power turned on to activate it, and further comprising electronics configured to measure the time elapsed from the time at which the caregiver turned the power on to activate the defibrillator, and wherein the electronics are configured so that at least a plurality of the light sources are sequentially illuminated based on the elapsed time independently of user action.