Factors related to the development of AF after AFL ablation
| Univariate analysis | Multivariate analysis | |||||
|---|---|---|---|---|---|---|
| p Value | RR | 95% CI | p Value | RR | 95% CI | |
| CI, confidence interval; NA, not applicable; RR, relative risk. | ||||||
| Preprocedural AF | <0.01 | 2.25 | 1.50 to 3.40 | <0.01 | 2.14 | 1.43 to 3.22 |
| Cardioversion | <0.01 | 1.72 | 1.19 to 2.49 | <0.01 | 1.74 | 1.20 to 2.53 |
| Number of antiarrhythmic drugs | <0.01 | 1.19 | 1.05 to 1.34 | <0.01 | 1.18 | 1.06 to 1.33 |
| Number of years of atrial flutter | 0.07 | 1.04 | 0.99 to 1.07 | NA | NA | NA |
| Procedural AF | 0.07 | 1.42 | 0.97 to 2.08 | NA | NA | NA |
| Age | 0.11 | 0.99 | 0.98 to 1.01 | NA | NA | NA |
| Structural heart disease | 0.25 | 1.24 | 0.86 to 1.80 | NA | NA | NA |
| Ejection fraction | 0.43 | 0.99 | 0.98 to 1.01 | NA | NA | NA |
| Left atrial diameter | 0.76 | 0.96 | 0.72 to 1.27 | NA | NA | NA |