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Can We Predict the Failure of Electrical Cardioversion of Acute Atrial Fibrillation? The FinCV Study
Author(s) -
GRÖNBERG TONI,
HARTIKAINEN JUHA E. K.,
NUOTIO ILPO,
BIANCARI FAUSTO,
VASANKARI TUIJA,
NIKKINEN MARKO,
YLITALO ANTTI,
AIRAKSINEN K. E. JUHANI
Publication year - 2015
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/pace.12561
Subject(s) - medicine , atrial fibrillation , cardioversion , cardiology , sinus rhythm , electrical cardioversion , confidence interval , anesthesia , odds ratio
Background Data on predictors of failure of electrical cardioversion of acute atrial fibrillation are scarce. Methods We explored 6,906 electrical cardioversions of acute (<48 hours) atrial fibrillation in 2,868 patients in a retrospective multicenter study. Results The success rate of electrical cardioversion was 94.2%. In 26% of unsuccessful cardioversions, the cardioversion was performed successfully later. Antiarrhythmic drug therapy, short (<12 hours) duration of atrial fibrillation episode, advanced age, permanent pacemaker, history of atrial fibrillation episodes within 30 days before cardioversion, and β‐blockers were independent predictors of unsuccessful electrical cardioversion. In the subgroup of patients with cardioversion of the first atrial fibrillation episode (N = 1,411), the short duration of episode (odds ratio [OR] = 2.28; 95% confidence interval [CI] 1.34–3.90, P = 0.003) and advanced age (OR = 1.03; 95% CI 1.02–1.05, P < 0.001) were the only independent predictors of unsuccessful cardioversion. After successful cardioversion, the rate of early (<30 days) clinical recurrence of atrial fibrillation was 17.3%. The index cardioversion being performed due to the first atrial fibrillation episode was the only predictor of remaining in the sinus rhythm. Conclusion A short (<12 hours) duration of acute atrial fibrillation is a significant predictor of unsuccessful cardioversion, especially during the first attack. First atrial fibrillation episode was the only predictor of remaining in the sinus rhythm.