Arrhythmias & electrophysiology
Precardioversion Heart Rhythm Monitoring Using Smartphone Photoplethysmography: The SMARTBEATS Randomized Clinical Trial
Authors' conclusion
The results of this study suggest that precardioversion monitoring using smartphone photoplethysmography represents a highly scalable digital intervention that significantly reduced same-day cancellations.
Study context
- Population
- Adults with persistent AF or atrial flutter scheduled for cardioversion, without a cardiac implantable electronic devicerandomized
- Participants
- 206 adults
- Comparison
- Intervention vs Control
- Interventionn = 105
- Controln = 101reference
- Primary endpoint
- Proportion of same-day cancellations of scheduled AF or flutter cardioversions
Methodological detailssingle-blinded, single-centre (tertiary hospital, Sweden), September 2022 to February 2025; 3 excluded after randomization (cardiac implantable device)
- Single-blinded
- Single-centre (tertiary hospital, Sweden)
- September 2022 to February 2025; 3 excluded after randomization (cardiac implantable device)
Primary result
As reported in the abstract
Same-day cancellations of scheduled cardioversion
P < 0.001
Further findings
Same-day cancellations due to spontaneous sinus rhythm conversion
P < 0.001
Daily recordings per participant precardioversion (all participants)
- Median (IQR) daily recordings per participant
- 2.1 (2.0-2.3)
- Total heart rhythm recordings precardioversion
- 5226
Original publication
Precardioversion Heart Rhythm Monitoring Using Smartphone Photoplethysmography: The SMARTBEATS Randomized Clinical Trial. JAMA Cardiol. Published 1 July 2026. doi:10.
Summarised from the published abstract; every number is checked against it