ABC | Volume 114, Nº5, May 2020

Original Article Bianco et al. Ablation of atrial flutter and fibrillation Arq Bras Cardiol. 2020; 114(5):775-782 Figure 2 – Kaplan-Meier analysis of occurrence of atrial fibrillation after ablation of cavotricuspid isthmus-dependent atrial flutter. Table 3 – Univariate and multivariate analysis of clinical variables for occurrence of atrial fibrillation after ablation of cavotricuspid isthmus- dependent atrial flutter Variables Univariate analysis Multivariate analysis OR 95% CI p-value OR 95% CI p-value Age 1.01 0.98-1.04 0.38 - - - Sex 0.84 0.32-2.18 0.73 - - - Body mass index 0.96 0.85-1.08 0.57 - - - Left atrial diameter 0.97 0.90-1.04 0.42 - - - LVEF 0.99 0.96-1.02 0.82 - - - History of renal failure 3.88 0.99-15.1 0.05 3.12 0.89-14.2 0.10 CHF 0.66 0.25-1.73 0.40 - - - SAH 2.15 0.86-5.39 0.10 1.98 0.78-5.04 0.15 Diabetes mellitus 0.59 0.20-1.73 0.34 - - - Vascular disease 1.19 0.47-3.05 0.70 - - - OAC 1.32 0.56-3.13 0.51 - - - AAD 0.68 0.28-1.63 0.39 - - - LVEF: left ventricular ejection fraction; CHF: congestive heart failure; SAH: systemic arterial hypertension; OAC: oral anticoagulants; AAD: antiarrhythmic drugs. *p-value indicates statistically significant differences at a level of 5% 778