<unk>  is a temporary means of pacing a patient's heart during a medical emergency. It is accomplished by delivering pulses of electric current through the patient's chest, which stimulates the heart to contract.
Transcutaneous pacing
Transvenous pacing
AVNRT cardioversion
Lopressor injection
Vagal maneuvers
Implantable cardioverter defibrillator
Defibrillation
Pericardial window