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Apple Watch Heart Failure Study

Title Monitoring Heart Failure Patients using Heart Rate Variability measured by the Apple Watch
Therapeutic Area Heart Failure, Cardiac Failure
Principal Investigator Frederick Cobey, MD, MPH, FASE
Min Age 22 Years
Gender All
Contact Edward Hong MD


This is a pilot/feasibility study on the accuracy of HRV measured by the Apple Watch on the clinical status of patients admitted for acute heart failure decompnsation. We hypothesize that there will be a statistically significant improvement in the HRV that correlates clinically over the course of hospitalization. Meaningful findings from this study will strengthen the potential for a telemonitoring system where HRV measured remotely from home using wearable devices like Apple Watch can help physicians monitoring their health and intervene accordingly.

Study Details

Inclusion Criteria

  • Admitted to Tufts Medical Center for acute decompensated heart failure
  • Left ventricular ejection fraction greater than 35%

Exclusion Criteria

  • Patients with paced rhythm, atrial fibrillation/flutter, frequent PVCs, hx of heart transplant/VAD, LV EF <35%

Study Requirements

5 minutes of application of Apple Watch on the wrist: once upon admission and once prior to discharge