Table 3 Comparison between single- and dual-chamber pacing groups including all the measured parameters at the three time intervals (pre-pacing, at 1 week and 6 months post pacing)
| Measurement | Pre-pacing | p value | Post pacing at 1 week | p value |
Post pacing At 6 months | p value |
|---|---|---|---|---|---|---|
| EDV (ml) | ||||||
| Single-chamber | 102.6 ± 25.95 | 0.360 | 86.81 ± 25.09 | 0.259 | 88.93 ± 30.39 | 0.098 |
| Dual-chamber | 109.0 ± 22.91 | 93.43 ± 18.80 | 97.04 ± 19.62 | |||
| ESV (ml) | ||||||
| Single-chamber | 28.48 ± 9.67 | 0.055 | 28.96 ± 11.25 | 0.080 | 36.52 ± 21.87 | 0.143 |
| Dual-chamber | 34.43 ± 11.75 | 34.91 ± 12.24 | 44.65 ± 15.66 | |||
| SV (ml) | ||||||
| Single-chamber | 74.07 ± 20.20 | 0.944 | 57.78 ± 17.47 | 0.880 | 52.56 ± 17.54 | 0.962 |
| Dual-chamber | 73.7 ± 17.35 | 58.52 ± 17.02 | 52.35 ± 13.13 | |||
| HR (bpm) | ||||||
| Single-chamber | 41.63 ± 8.45 | 0.938 | 64.04 ± 9.79 | <0.001* | 62.00 ± 6.45 | <0.001* |
| Dual-chamber | 41.83 ± 9.36 | 77.96 ± 10.85 | 76.43 ± 9.43 | |||
| COP (L/m) | ||||||
| Single-chamber | 3.07 ± 0.99 | 0.853 | 3.69 ± 1.13 | 0.032* | 3.27 ± 1.12 | 0.026* |
| Dual-chamber | 3.04 ± 0.90 | 4.48 ± 1.14 | 3.96 ± 1.04 | |||
| EF (%) | ||||||
| Single-chamber | 72.41 ± 6.55 | 0.156 | 65.96 ± 8.41 | 0.058 | 59.56 ± 9.85 | 0.071 |
| Dual-chamber | 69.35 ± 8.46 | 60.74 ± 10.62 | 54.35 ± 10.04 | |||
| GLS (%) | ||||||
| Single-chamber | -19.41 ± 3.53 | 0.819 | -15.44 ± 4.09 | 0.446 | -13.52 ± 4.66 | 0.766 |
| Dual-chamber | -19.65 ± 3.98 | -14.52 ± 4.39 | -13.13 ± 4.45 | |||