Heart Failure and Risk of Re-Admissions Determined by Abnormal REVEAL Parameters (HF-RADAR)

Inclusion Criteria:

1. Men and non-pregnant/non lactating women ≥ 18 years.
2. Admission to hospital or observation unit for worsening heart failure.
3. Has a Reveal XT device or has plans for a device implant for a clinical indication within 14 days of discharge.
4. Ejection fraction ≥40% by echocardiogram within 6 months of enrollment
5. Able to participate in the study for at least 6 months.
6. Not currently enrolled in another study.
7. Able to provide informed consent and complete scheduled study visits.

Exclusion Criteria:

1. Has a clinical indication for a therapeutic cardiac device (pacemaker or defibrillator)
2. History of permanent atrial fibrillation or atrial flutter.
3. History of uncontrolled hypertension (high blood pressure)
4. Has a previously implanted cardiac device (pacemaker or defibrillator) in place.
5. Stage IV or V chronic renal dysfunction (estimated GFR <25 ml/min per 1.73 m2)
6. End-stage (Stage D) HF, including chronic ionotropic drugs infusions or left ventricular assist device
7. Waiting on the transplant list as an UNOS status 1A or 1B patient