The Zoll LifeVest is a wearable defibrillator and a very good treatment option in case of acute cardiac arrest. This device provides patients with exceptional protection and monitoring of the heart. Unlike other cardioverter defibrillators which are implanted, this defibrillator can be worn on the body like a life vest. The non-adhesive electrodes present here continuously monitor the heart for any life threatening or abnormal pulse. If any such abnormalcy is spotted, the device signals the patient before delivering shock treatment to revive normalcy. Thus, the patient can delay the treatment as per her/his choice. But in case the patient loses consciousness, the vest automatically releases a blue gel over the electrodes and gives the patient an electric shock to revive the normal heart beat.