Arrhythmias & electrophysiologySecondary analysis
Smartphone app-based approximation of time spent with atrial fibrillation and symptoms in patients after catheter ablation: data from the TeleCheck-AF project
- Secondary analysis of the TeleCheck-AF project
Smartphone photoplethysmography-based app for rhythm and symptom monitoring three times daily for 1 week
Authors' conclusion
On-demand, app-based simultaneous rhythm and symptom assessment provides objective proxies of time spent with AF and/or symptoms and SRC, which may assist in assessing AF and symptom outcomes after AF ablation.
Study context
- Population
- Patients with a teleconsultation in the 12-month follow-up after atrial fibrillation (AF) ablation
- Participants
- 484 patients
- Comparison
- Paroxysmal AF before ablation vs Persistent AF before ablation
- Paroxysmal AF before ablationn = 44
- Persistent AF before ablationn = 23
- Primary endpoint
- Feasibility of smartphone app-based approximation of time spent with AF and/or symptoms
Primary result
As reported in the abstract
Correlation of %AF recordings, AF load and %AF days
rs = 0.88-0.95
Correlation of %symptom recordings, symptom load and %symptom days
rs = 0.95-0.98
Symptom-rhythm correlation (SRC) vs time spent with symptoms (negative correlation)
rs = −0.65-0.90
SRC vs time spent with AF (negative correlation)
rs = −0.31-0.34
Further findings
AF density pattern in patients with AF during monitoring
High-density score >90% ('persistent AF pattern') Paroxysmal AF before ablation 5% (n = 2/44) · Persistent AF before ablation 43% (n = 10/23)
- AF density pattern in patients with AF during monitoring: value = low-density score <50% ('paroxysmal AF pattern')
Original publication
Summarised from the published abstract; every number is checked against it