| Silicone | Polyurethane | |
| Pressure at 30 ml/h | 8.3 (6.9 to 9.7) | 42.1 (37.2 to 46.9)* |
| Pressure at 499 ml/h | 189.6 (172.4 to 206.8) | 823.9 (753.6 to 894.3)* |
| Rupture pressure | 285.4 (254.4 to 316.5) | 1738.2 (1635.4 to 1897.4)* |
| Flush pressure (patent CVC) | 48.3 (33.1 to 63.4) | 171.0 (144.1 to 196.5)* |
| Flush pressure (occluded CVC) | 245.5 (146.9 to 343.4) | 348.9 (295.1 to 403.3) |
| Rupture frequency (flushing occluded CVC) | 5/9 flush attempts | 0/40 flush attempts* |
CVC, central venous catheter. *p<0.001.