This study is designed as a multi-center prospective observational study of newly diagnosed
Heart Failure (HF) patients to test the hypothesis that additional Ejection Fraction (EF)
recovery occurs between 90 and 180 days as Guideline Directed Medical Therapy (GDMT) is
achieved. Although the study doesn't start until day 90, all eligible, consenting patients
will be entered into a registry at the start of wearable cardioverter defibrillator (WCD)
use. The pre-study registry will allow us to collect early (90 day) outcomes and data in
those patients who are likely to be eligible for the study at day 90, or are eligible, but
refuse the study at day 90.