Prevalence and prognostic significance of device-detected subclinical atrial fibrillation in patients with heart failure and reduced ejection fraction.

Background: Cardiac implanted electronic devices (CIEDs) can detect short durations of previously unrecognised atrial fibrillation (AF). The prognostic significance of device-detected subclinical AF, in the context of contemporary heart failure (HF) therapy, is unclear.

Methods: Amongst patients enrolled in the Remote Monitoring in HF with implanted devices (REM-HF) trial, three categories were defined based on total AF duration in the first year of follow-up: no AF, subclinical AF (≥6 min to ≤24 h), and AF >24 h.

Impact of remote monitoring on clinical outcomes for patients with heart failure and atrial fibrillation: results from the REM-HF trial.

Aims: Studies of remote monitoring (RM) in heart failure (HF) speculate that patients with atrial fibrillation (AF) derive the greatest benefit. We compared the impact of RM vs. usual care on clinical outcomes for patients with and without AF enrolled in the Remote Management of Heart Failure Using Implanted Electronic Devices (REM-HF) trial.

Remote management of heart failure using implantable electronic devices.

Aims: Remote management of heart failure using implantable electronic devices (REM-HF) aimed to assess the clinical and cost-effectiveness of remote monitoring (RM) of heart failure in patients with cardiac implanted electronic devices (CIEDs).

Methods And Results: Between 29 September 2011 and 31 March 2014, we randomly assigned 1650 patients with heart failure and a CIED to active RM or usual care (UC). The active RM pathway included formalized remote follow-up protocols, and UC was standard practice in nine recruiting centres in England.

Rationale and study design of the REM-HF study: remote management of heart failure using implanted devices and formalized follow-up procedures.

Aims: We wish to assess the clinical and cost-effectiveness of remote monitoring of heart failure patients with cardiac implanted electronic devices.

Methods: REM-HF is a multicentre, randomized, non-blinded, parallel trial designed to compare weekly remote monitoring-driven management with usual care for patients with cardiac implanted electronic devices (ICD, CRT-D, or CRT-P). The trial is event driven, and the final analysis will be performed when 546 events have been observed or the study is terminated at the interim analysis.