Table 2. Indications for WCD Placement [5, 6].

Patient populations

Patients with NICM and LVEF ≤ 35%, NYHA class II-III less than 3 months of GDMT

Patients with ICM and LVEF ≤ 35%, NYHA class II-III who cannot undergo ICD placement, within 40 days of MI or 90 days of a CABG procedure

Patients awaiting ICD reimplantation after device infection or dislodgement

Patients who are not good candidates for ICD or are not good surgical candidates

Patients who prefer less invasive means for SCD prophylaxis

Patients with a possibly reversible cause of reduced LVEF (MC, PPCM, SIC)

Patients with terminal HFrEF awaiting to undergo cardiac transplant in near future

WCD: wearable cardioverter defibrillator; NICM: non-ischemic cardiomyopathy; LVEF: left ventricular ejection fraction; NYHA: New York Heart Association; GDMT: goal-directed medical therapy; ICM: ischemic cardiomyopathy; ICD: implantable cardioverter defibrillator; MI: myocardial infarction; CABG: coronary artery bypass graft surgery; SCD: sudden cardiac death; MC: myocarditis; PPCM: peripartum cardiomyopathy; SIC: stress-induced cardiomyopathy; HFrEF: heart failure with reduced ejection fraction.