Table 3.
Echocardiographic results
| Healthy individuals (n = 20) | Patients without recurrence of AF after RFA (n = 30) | Patients with recurrence of AF after RFA (n = 31) |
P-value ANOVA F-test |
|
|---|---|---|---|---|
| LA MD (ms) | 16 ± 8 | 30 ± 12* | 38 ± 14*,** | <0.001 |
| LA GLS (%) | −19 ± 2 | −16 ± 3* | −14 ± 4* | <0.001 |
| LA diameter/BSA (cm/m2) | 1.7 ± 0.6 | 1.8 ± 0.2 | 1.8 ± 0.2 | 0.3 |
| LA area/BSA (cm2/m2) | 8 ± 3 | 9 ± 1 | 9 ± 1 | 0.3 |
| LA volume/BSA (mL/m2) | 29 ± 6 | 27 ± 4 | 28 ± 3 | 0.6 |
| LV GLS (%) | −22.5 ± 2.4 | −21.7 ± 2.2 | −21.8 ± 1.9 | 0.4 |
| LV EF (%) | 62 ± 4 | 63 ± 4 | 61 ± 4 | 0.4 |
| LV EDV/BSA (mL/m2) | 56 ± 23 | 64 ± 8 | 65 ± 10 | 0.052 |
| LV ESV/BSA (mL/m2) | 21 ± 9 | 24 ± 4 | 25 ± 5 | 0.6 |
| IVSd (mm) | 9 ± 2 | 9 ± 2 | 9 ± 2 | 0.7 |
| LVIDd/BSA (mm/m2) | 24 ± 9 | 27 ± 3 | 25 ± 3 | 0.2 |
| LVPWd (mm) | 8 ± 2 | 9 ± 2 | 9 ± 2 | 0.8 |
| E velocity (cm/s) | 70 ± 20 | 60 ± 20 | 70 ± 20 | 0.7 |
| DT (ms) | 206 ± 46 | 196 ± 39 | 206 ± 55 | 0.7 |
| A velocity (cm/s) | 50 ± 20 | 60 ± 10 | 50 ± 10 | 0.1 |
| E/A ratio | 1.4 ± 0.6 | 1.2 ± 0.5 | 1.4 ± 0.5 | 0.3 |
| e’ (cm/s) | 10 ± 3 | 9 ± 2 | 9 ± 2 | 0.09 |
| E/e’ | 7 ± 2 | 8 ± 2 | 8 ± 3 | 0.2 |
Mean ± SD. Right column shows P-values for ANOVA test. Flags for significance are obtained from the post hoc pair-wise comparison using the Bonferroni correction when comparing the three groups.
AF, atrial fibrillation; ANOVA, analysis of variance; BSA, body surface area; DT, deceleration time; EDV, end-diastolic volume; EF, ejection fraction; ESV, end-systolic volume; GLS, global longitudinal strain; IVSd, interventricular septum diastole; MD, mechanical dispersion; LA, left atrial; LV, left ventricle; LVIDd, left ventricular internal diameter diastole; LVPWd, left ventricular posterior wall diastole; RFA, radiofrequency ablation.
*P < 0.05 compared with healthy individuals.
**P < 0.05 compared with patients without recurrence of AF after RFA.