Author:  Pete Bakes, MD Educational Pearls:   AICD: Automated Implantable Cardioverter-Defibrillator. Can be placed for secondary prevention of cardiac arrest (i.e. history of cardiac arrest not from reversible cause). Also indications for primary prevention: EF 35% or less; ventricular tachycardia with underlying structural heart disease; Brugada; genetic-induced prolonged QT-syndromes.   References: Al-Khatib SM et. al. 2017 AHA/ACC/HRS Guideline for Management of Patients With Ventricular Arrhythmias and the Prevention of Sudden Cardiac Death: Executive Summary: A Report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines and the Heart Rhythm Society. Heart Rhythm. 2017 Oct 30. pii: S1547-5271(17)31249-3. doi: 10.1016/j.hrthm.2017.10.035.