Treatments vary and will depend on the type of arrhythmia. They may include antiarrhythmic drugs, pacemakers, implantable defibrillators, and ablation procedures. If someone goes into cardiac arrest, cardiopulmonary resuscitation (CPR) and use of an automated external defibrillator (AED), if available, improves the chances of survival and recovery outcomes.﻿﻿﻿