Table 6. Data change of 2D-STI examination of the patients in PAF observation group.
| Time | Cases | Mean left atrium peak strain (%) | Mean peak left atrium strain rate (/s) | |||
|---|---|---|---|---|---|---|
| mSs | mSe | mSRs | mSRe | |||
| Before treatment | 50 | 14.15±5.95 | 6.35±3.92 | 1.21±0.38 | −1.25±0.22 | |
| Treated for 12 months | 45 | 20.75±5.33### | 9.25±3.62### | 1.73±0.31### | −1.73±0.34### | |
| Treated for 24 months | 38 | 29.59±4.97###△△△ | 14.58±3.82###△△△ | 1.99±0.36###△△△ | −2.02±0.54###△△ | |
| F test | – | 28.592 | 25.492 | 19.557 | 14.328 | |
| P value | – | <0.001*** | <0.001*** | <0.001*** | <0.001*** | |
Comparison among before treatment, treated for 12 months and treated for 24 months, ***P<0.001. Compared with before treatment, ###P<0.001. Compared with treated for 12 months, △△P<0.01, △△△P<0.001. 2D-STI, two-dimensional speckle tracking imaging; PAF, paroxysmal atrial fibrillation.