Smartphone app-based approximation of time spent with atrial fibrillation and symptoms in patients after catheter ablation: data from the TeleCheck-AF project

Emma Sandgren, Astrid N.L. Hermans, Monika Gawalko, Konstanze Betz, Afzal Sohaib, Chi Ho Fung, Henrike A.K. Hillmann, Rachel M.J. Van Der Velden, Dominique Verhaert, Daniel Scherr, Arian Sultan, Daniel Steven, Ron Pisters, Martin Hemels, Piotr Lodziński, Sevasti Maria Chaldoupi, Dhiraj Gupta, Henri Gruwez, Nikki A.H.A. Pluymaekers, Jeroen M. HendriksMalene Nørregaard, Martin Manninger, David Duncker, Dominik Linz*, TeleCheck-AF investigators

*Corresponding author for this work

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Abstract

Aims: Reduction of atrial fibrillation (AF) burden is the preferred outcome measure over categorical AF rhythm recurrence after AF ablation. In this sub-analysis of the TeleCheck-AF project, we tested the feasibility of smartphone app-based approximation of time spent with AF and/or symptoms. Methods and results: Patients scheduled for at least one teleconsultation during the 12-month follow-up after AF ablation were instructed to use a smartphone photoplethysmography-based application for simultaneous symptom and rhythm monitoring three times daily for 1 week. Proxies of time spent with AF and/or symptoms (% recordings, load, and % days), temporal aggregation of AF and/or symptoms (density), and symptom-rhythm correlation (SRC) were assessed. In total, 484 patients (60% male, 62 ± 9.9 years) were included. Adherence, motivation, and patient satisfaction were high. %AF recordings, AF load, and %AF days (rs = 0.88-0.95) and %symptom recordings, symptom load, and %symptom days (rs = 0.95-0.98) showed positive correlations. The SRC correlated negatively with time spent with symptoms (rs = -0.65-0.90) and with time spent with AF (rs = -0.31-0.34). In patients with paroxysmal AF before ablation and AF during the monitoring period, 87% (n = 39/44) had a low-density score <50% ('paroxysmal AF pattern') while 5% (n = 2/44) had a high-density score >90% ('persistent AF pattern'). Corresponding numbers for patients with persistent AF before ablation were 48% (n = 11/23) and 43% (n = 10/23), respectively. 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.

Original languageEnglish
Article numbereuae247
JournalEuropace
Volume26
Issue number10
Number of pages11
ISSN1099-5129
DOIs
Publication statusPublished - 2024

Bibliographical note

Publisher Copyright:
© 2024 The Author(s). Published by Oxford University Press on behalf of the European Society of Cardiology.

Keywords

  • AF burden
  • AF symptoms
  • Atrial fibrillation
  • Catheter ablation
  • Mobile health
  • Photoplethysmography

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