Prospective WCD Post CABG Registry (CABG Registry)

This registry study tracks patients who are prescribed a wearable cardioverter defibrillator (WCD) — a vest worn outside the body that can automatically deliver a shock to restart the heart if a life-threatening rhythm occurs — after coronary artery bypass graft (CABG) surgery. It focuses on patients with low heart pumping function (ejection fraction below 35%) who are at short-term risk of sudden cardiac death while recovering. **You may be eligible if:** - You recently had your first-ever CABG (bypass) surgery within the last 10 days - Your heart pumping function (ejection fraction) was found to be below 35% after surgery, before leaving the hospital - Your doctor prescribed the WCD vest for this reason - You are 18 or older **You may NOT be eligible if:** - You had valve repair surgery at the same time as bypass surgery - You have had a previous bypass surgery - You have an active single-chamber pacemaker - You have a physical or mental condition that prevents you from using the vest correctly - You have a do-not-resuscitate order or are in another interventional study Talk to your doctor to see if this trial is right for you.