When is a wearable defibrillator indicated?

If a WCD is indicated, the observance must be as perfect as possible. Thus, patients need proper education in wearing the WCD.The temporary use of a WCD is reasonable in patients with a high risk for SCD, even with a low level of evidence with only one randomized clinical trial (VEST), as its disadvantages are limited to a transitory impairment in quality of life and a low risk of inappropriate shock.Indications are now well accepted: ischemic cardiomyopathy with LVEF below 35% before reassessment, recent onset of NICM or presumed myocarditis with LVEF ≤35% before reassessment, after ICD explant until reimplantation (e.g. infection), and bridge to transplant.Future guidelines on WCD in the prevention of SCD may be warranted to harmonize clinical practice especially in debated indications..