| Complications | Control group | Observation group |
| swelling | 6 (12.5) | 2 (4.2) |
| bleeding | 8 (16.7) | 3 (6.3) |
| infection | 2 (4.2) | 0 (0) |
| thrombosis | 3 (6.3) | 0 (0) |
| total | 19 (38) | 5 (12) |
| Mann-Whitney U | 816 | P < 0.001 |