defibrillator practice on a cpr

accident arrhythmias artificial attack bradycardia cardiac cardiology cardioverter cpr death defibrillate defibrillator dying electrical electrodes electroshock emergency equipment fibrillation health heart heartbeat hospital life medical medicine monitor nurses nursing paramedics practice pulse rescue rescuer ressucitate resuscitation revive rhythms save services shock supraventricular tachyarrythmia tachycardia urgency urgent ventricular