Table 2.
Impact of clinical parameters on LA and LAA size.
| No late recurrence (n = 45) | Late recurrence (n = 78) | p value (between group) | |||||
|---|---|---|---|---|---|---|---|
| Mean | SD | p value (pre and post) | Mean | SD | p value (pre and post) | ||
| Baseline LA | 93.4 | 31.7 | 105.7 | 48.4 | 0.153 | ||
| F/U LA | 69.6 | 25.2 | 77.0 | 29.6 | 0.166 | ||
| ∆ LA | −23.7 | 19.5 | <0.001 | −25.6 | 29.2 | <0.001 | 0.716 |
| Baseline LAA | 20.4 | 6.7 | 18.9 | 9.3 | 0.336 | ||
| F/U LAA | 23.6 | 8.4 | 23.8 | 15.4 | 0.921 | ||
| ∆ LAA | 3.1 | 5.4 | <0.001 | 5.0 | 9.2 | <0.001 | 0.218 |
| Paroxysmal (n = 53) | Non-paroxysmal (n = 70) | ||||||
| Baseline LA | 83.7 | 35.3 | 114.9 | 44.3 | <0.001 | ||
| F/U LA | 66.0 | 23.1 | 80.4 | 30.2 | 0.004 | ||
| ∆ LA | −18.9 | 27.5 | <0.001 | −29.6 | 23.8 | <0.001 | 0.034 |
| Baseline LAA | 19.3 | 6.3 | 19.6 | 9.9 | 0.834 | ||
| F/U LAA | 22.6 | 7.7 | 24.5 | 16.4 | 0.433 | ||
| ∆ LAA | 3.4 | 5.3 | <0.001 | 5.0 | 9.6 | <0.001 | 0.254 |
| PVI only (n = 46) | PVI + Substrate modification (n = 77) | ||||||
| Baseline LA | 77.8 | 23.6 | 117.0 | 46.5 | <0.001 | ||
| F/U LA | 65.0 | 24.5 | 79.7 | 28.9 | 0.005 | ||
| ∆ LA | −12.1 | 19.3 | <0.001 | −33.5 | 26.3 | <0.001 | <0.001 |
| Baseline LAA | 20.2 | 6.5 | 19.0 | 9.5 | 0.420 | ||
| F/U LAA | 23.8 | 8.3 | 23.7 | 15.6 | 0.957 | ||
| ∆ LAA | 3.6 | 5.5 | <0.001 | 4.7 | 9.2 | <0.001 | 0.459 |
| No anterior line block (n = 92) | Anterior line block (n = 31) | ||||||
| Baseline LA | 97.6 | 42.3 | 113.7 | 45.2 | 0.108 | ||
| F/U LA | 74.7 | 28.2 | 73.0 | 28.6 | 0.780 | ||
| ∆ LA | −20.8 | 23.9 | <0.001 | −39.1 | 28.1 | <0.001 | 0.002 |
| Baseline LAA | 19.9 | 7.3 | 18.0 | 11.3 | 0.380 | ||
| F/U LAA | 23.5 | 8.5 | 24.2 | 22.4 | 0.873 | ||
| ∆ LAA | 3.7 | 5.6 | <0.001 | 6.2 | 12.8 | 0.012 | 0.127 |
F/U: follow up; LA: left atrium; LAA: left atrial appendage; PVI: pulmonary vein isolation; SD: standard deviation.