Improving Atrial Fibrillation or Flutter Detection and Management by Smartphone-Based Photoplethysmography Rhythm Monitoring Following Cardiac Surgery: A Pragmatic Randomized Trial.

Background And Aims: Atrial fibrillation (AF) or atrial flutter (AFL) after cardiac surgery are common and associated with adverse outcomes. The increased risk related to AF or AFL may extend beyond discharge. This study aims to determine whether photoplethysmography (PPG)-based smartphone monitoring to detect AF or AFL after hospital discharge following cardiac surgery improves AF management.