Left atrial appendage closure implantation procedure
| Variable | Watchman V.2.5 (N=95) | Watchman FLX (N=74) | P value |
| Duration of procedure (min) | 51±22 | 48±25 | 0.39 |
| Contrast volume (mL) | 67.9±40.2 | 58.3±33.8 | 0.11 |
| Radiation dose (Gycm2) | 23.2±39.9 | 17.5±16.6 | 0.27 |
| Number of devices | 1.2±0.4 | 1.1±0.3 | 0.23 |
| Device size (compression) in angiography (mm) | 23.6±3.7 | 23.3±3.8 | 0.63 |
| Relative device compression in angiography (%) | 12.3±7.3 | 14.8±8.2 | 0.04 |