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1:1 atrial-flutter. Prevalence and clinical characteristics

Abstract : Little is known about the epidemiology of 1:1 atrial flutter (AFL). Our objectives were to determine its prevalence and predisposing conditions. Methods 1037 patients aged 16 to 93 years (mean 64 ± 12) were consecutively referred for AFL ablation. 791 had heart disease (HD). Patients admitted with 1/1 AFL were collected. Patients were followed 3 ± 3 years. Results 1:1 AFL-related tachycardiomyopathy was found in 85 patients, 59 men (69%) with a mean age of 59 ± 12 years. The prevalence was 8%. They were compared to 952 patients, 741 men (78%, 0.04), with a mean age of 65 ± 12 years (0.002) without 1:1 AFL. Factors favoring 1:1 AFL was the absence of HD (35 vs 23%, 0.006), the history of AF (42 vs 30.5%)(0.025) and the use of class I antiarrhythmic drugs (34 vs 13%)(p < 0.0001), while use of amiodarone or beta blockers was less frequent in patients with 1:1 AFL (5, 3.5%) than in patients without 1:1 AFL (25, 15%) (p < 0.0001, 0.03). The failure of ablation (9.4 vs 11%), ablation-related complications (2.3 vs 1.4%), risk of subsequent atrial fibrillation (AF) (20 vs 24%), risk of AFL recurrences (19 vs 13%) and risk of cardiac death (5 vs 6%) were similar in patients with and without 1:1 AFL. Conclusions The prevalence of 1:1 AFL in patients admitted for AFL ablation was 8%. These patients were younger, had less frequent HD, had more frequent history of AF and received more frequently class I antiarrhythmic drugs than patients without 1:1 AFL. Their prognosis was similar to patients without 1:1 AFL.
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https://hal.univ-lorraine.fr/hal-01715035
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Submitted on : Thursday, February 22, 2018 - 11:55:31 AM
Last modification on : Saturday, October 16, 2021 - 11:18:08 AM

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Béatrice Brembilla-Perrot, Franck Laporte, Jean Marc Sellal, Jérôme Schwartz, Arnaud Olivier, et al.. 1:1 atrial-flutter. Prevalence and clinical characteristics. International Journal of Cardiology, Elsevier, 2013, 168 (4), pp.3287 - 3290. ⟨10.1016/j.ijcard.2013.04.047⟩. ⟨hal-01715035⟩

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