Supraventricular arrhythmia following patent foramen ovale percutaneous closure

Abstract Background Randomized studies have reported low rates of atrial fibrillation (AF) after patent foramen ovale (PFO) closure (<6%) but relied on patients-reported symptomatic episodes, thus true incidence and timing AF PFO remain unknown. Objective To prospectively determine the incidence, timing, determinants supraventricular arrhythmia following based loop recorder monitoring. Methods Cardiac monitoring was proposed to all patients from June 2018 October 2021 in our center by mean implantable (ILR) considered at higher risk (age ≥55 years, associated cardiovascular factors, prior palpitations, or documented ectopic activity) 4-week external (ELR) other patients. The primary endpoint AF, flutter, tachycardia lasting >30 seconds within 28 days procedure. Determinants were assessed with stepwise logistic regression model. Results A total 225 included. occurred 47/225 (20.9%) patients, including n=13 (9.9%) n=24 (28.9%) among ELR- ILR-monitored respectively. Among median follow-up 428 (211–752) days, four more cases diagnosed beyond (Figure 1). Overall, delay procedure 14.0 (6.5–19.0) half these episodes. older age (adjusted odds ratio [aOR]: 1.67, 95% confidence interval [CI]: 1.18–2.36, per 10-year increase), device left disc diameter ≥25mm (aOR: 2.67, CI: 1.19–5.98) male sex 4.78, 1.96–11.66) 2). Conclusion Using prolonged monitoring, one patient out five a 14 suggesting that this post-procedural event has been so far, underestimated. Funding Acknowledgement Type funding sources: None.