Typical atrial flutter (AFL) is a frequently encountered clinical tachyarrhythmia, especially occurring in elderly people. Duration-related parameters such as duration of the negative component of flutter wave in lead II (D FNII) and P wave duration in lead II during SR (D PII) were independent risk predictors of the occurrence of AF.Electrocardiogram parameters during both the AFL and SR were useful in predicting the risk of new-onset AF in typical patients with AFL post-ablation.Some ECG parameters such as P wave duration and amplitude and fragmented QRS complex under SR are predicators of AF after AFL ablation.New-onset AF after ablation of typical AFL is not rare.In the multivariate analysis, D FNII and D PII (OR, 1.429 95% CI, 1.046–1.953 p = 0.025) were found to be independently associated with new-onset AF after typical AFL ablation.Ĭonclusion: Parameters representing left atrial activation time under both the SR and AFL were independently associated with new-onset AF post-typical AFL ablation and may be useful in risk prediction, which needs to be confirmed by further prospective studies. A FNII was significantly lower (0.118 ± 0.034 mV vs. D FNII was significantly longer in patients with new-onset AF compared to patients without AF (114.7 ± 29.6 ms vs. Results: During a median follow-up of 26.9 ± 11.8 months, 22 cases (13.9%) developed new-onset AF. The duration of the negative component of flutter wave in lead II (D FNII), proportion of the D FNII of the total circle length of AFL (D FNII%), amplitude of the negative component of flutter wave in lead II (A FNII), duration (D PNV1), and amplitude (A PNV1) of negative component of the P wave in lead V1, and P wave duration in lead II (D PII) during sinus rhythm were measured. ECGs during sinus rhythm (SR) and AFL were collected. Patients with a history of AF before ablation were excluded. Methods: A total of 158 consecutive patients (79.1% males, mean age 57.8 ± 14.3 years) with typical AFL were enrolled between January 2012 and August 2017 in this single-center study. This study aimed to investigate the predictive value of electrocardiographic parameters on new-onset AF post-typical AFL ablation. 2Cardiovascular Division, Department of Medicine, University of Minnesota Medical School, Minneapolis, MN, United Statesīackground: New-onset atrial fibrillation (AF) after ablation of typical atrial flutter (AFL) is not rare.1Division of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China. ![]() Hailei Liu 1 † Zhoushan Gu 1 † Chao Zhu 1 Mingfang Li 1 Jincheng Jiao 1 Hongwu Chen 1 Gang Yang 1 Weizhu Ju 1 Kai Gu 1 Fengxiang Zhang 1 Lin Yee Chen 2 Di Yang 1 * Minglong Chen 1 *
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