Table 2.
Electrocardiographic and echocardiographic data before and after ablation.
| Parameter | Before RFCA | P value | After RFCA | P value | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Septal | Right free wall | Left free wall | Concealed | Septal | Right free wall | Left free wall | Concealed | |||
| QRS (ms) | 125 ± 19# | 133 ± 25# | 120 ± 14# | 87 ± 11 | <0.001∗ | 89 ± 10 | 86 ± 10 | 88 ± 11 | 87 ± 11 | 0.847 |
| PR (ms) | 132 ± 23# | 116 ± 24# | 129 ± 18# | 145 ± 17 | 0.001∗ | 152 ± 18 | 146 ± 16 | 145 ± 12 | 144 ± 15 | 0.409 |
| LVEDd (mm) | 47 ± 5 | 48 ± 6 | 47 ± 4 | 45 ± 4 | 0.218 | 45 ± 3 | 45 ± 3 | 46 ± 3 | 44 ± 4 | 0.445 |
| LVEF (%) | 58 ± 4# | 58 ± 5# | 62 ± 1 | 62 ± 1 | <0.001∗ | 63 ± 3 | 62 ± 2 | 62 ± 1 | 62 ± 2 | 0.604 |
| IVMD (ms) | 29 ± 8# | 31 ± 5# | 28 ± 5 | 26 ± 5 | 0.092 | 29 ± 5 | 30 ± 6 | 31 ± 7 | 26 ± 4 | 0.06 |
| SPWMD (ms) | 90 ± 20# | 60 ± 16# | 50 ± 15 | 43 ± 6 | <0.001∗ | 49 ± 11 | 47 ± 12 | 46 ± 12 | 42 ± 5 | 0.242 |
Data are given as mean ± SD. P refers to comparison between the four groups. ∗P < 0.05. #P < 0.05 vs. concealed. QRS: QRS duration during sinus rhythm; PR: PR interval during sinus rhythm; LVEDd: left ventricle end-diastolic dimension; LVEF: left ventricular ejection fraction; IVMD: interventricular mechanical delay; SPWMD: septal-to-posterior wall motion delay.