1. The optimal cutoff of atrial high‐rate episodes for neurological events in patients with dual chamber permanent pacemakers
- Author
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Ju Yi Chen and Wei Da Lu
- Subjects
medicine.medical_specialty ,Optimal cutoff ,Youden's J statistic ,Clinical Investigations ,atrial high‐rate episodes ,030204 cardiovascular system & hematology ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,medicine ,In patient ,atrial fibrillation ,030212 general & internal medicine ,Risks and benefits ,High rate ,business.industry ,Proportional hazards model ,Atrial fibrillation ,dual chamber pacemakers ,General Medicine ,neurological events ,medicine.disease ,Increased risk ,Cardiology ,Cardiology and Cardiovascular Medicine ,business - Abstract
Background Patients with atrial high‐rate episode (AHRE) are at higher risk of neurological events. This study aimed to identify the optimal cutoff threshold for AHRE duration in patients with dual chamber permanent pacemakers (PPM) without prior atrial fibrillation. Methods We included 355 consecutive patients receiving dual chamber pacemaker implantation. Primary outcome was composite endpoint of subsequent neurological events after various AHRE durations. AHRE was defined as >175 bpm (MEDTRONIC) or > 200 bpm (BIOTRONIK) for longer than 30 s. Cox regression analysis with time‐dependent covariates was conducted. Results The mean age of included patients was 75.6 ± 11.3 years. Among 355 included patients, some had multiple AHREs; 125 patients (35.2%) developed AHRE ≥2 min, 107 (30.1%) had ≥5 min, 55 (15.5%) had ≥6 h, and 37 (10.4%) had ≥24 h. The mean follow‐up was 42.1 ± 31.2 months. During follow‐up, 19 neurological events occurred. After adjustment for CHA2DS2‐VASc score and device type, multivariate Cox regression analysis indicated AHRE ≥2 min (HR 13.605, 95% CI 3.010–61.498), and AHRE ≥5 min (HR 5.819, 95% CI 2.056–16.470) were significantly associated with neurological events. Hence, the optimal AHRE cutoff value was 2 min with the highest Youden index (sensitivity, 89.5%; specificity, 67.8%; AUC, 0.823, 95% CI, 0.763–0.884; p
- Published
- 2021