Table 3 Changes in electrocardiography and echocardiography parameters
| Â | Baseline | 12Â months | P value |
|---|---|---|---|
Electrocardiography parameters | |||
 HR (bpm) | 61.2 ± 10.5 | 65.0 ± 11.9 | <0.0001 |
 Sinus rhythm (%) | 90.1 | 89.0 |  |
 PR interval (ms) | 179.5 ± 32.2 | 180.5 ± 31.4 | 0.5784 |
 QRS interval (ms) | 98.0 ± 19.1 | 97.9 ± 18.2 | 0.7720 |
 SV1 + RV5 voltage (mm) | 2.7 ± 0.8 | 2.6 ± 0.7 | 0.1288 |
 QT interval (ms) | 427.9 ± 34.0 | 417.9 ± 34.5 | 0.0004 |
 QTc interval (ms) | 428.1 ± 22.6 | 425.2 ± 21.9 | 0.0933 |
Echocardiography parameters | |||
 LV Dd (mm) | 49.9 ± 6.3 | 49.5 ± 6.3 | 0.0803 |
 LV Ds (mm) | 33.2 ± 8.2 | 32.7 ± 7.9 | 0.0720 |
 IVST (mm) | 8.9 ± 1.9 | 8.9 ± 1.8 | 0.7381 |
 PWT (mm) | 9.3 ± 6.0 | 9.3 ± 6.0 | 0.6180 |
 EF (%) | 59.7 ± 12.3 | 60.0 ± 11.8 | 0.4006 |
 LV mass index (g/m2) | 109.9 ± 33.5 | 105.1 ± 31.9 | 0.0270 |
 E-wave velocity (m/s) | 68.2 ± 19.5 | 68.4 ± 20.0 | 0.7217 |
 A-wave velocity (m/s) | 78.6 ± 21.8 | 80.7 ± 20.8 | 0.3428 |
 Dct (ms) | 216.9 ± 58.5 | 223.9 ± 54.8 | 0.3279 |
 E/A ratio | 0.91 ± 0.45 | 0.85 ± 0.31 | 0.2005 |
 e′ (cm/s) | 6.08 ± 2.06 | 5.87 ± 1.59 | 0.0938 |
 E/e′ ratio | 12.11 ± 5.20 | 12.34 ± 5.22 | 0.4858 |