Table 2.
Postoperative outcome
| pNPWT (n = 32) (%) | Control (n = 34) (%) | p | OR | |
|---|---|---|---|---|
| Surgical site infections (overall) | 12 (38) | 19 (56) | 0.135 | |
| Wound infection (superficial/deep according to CDC) | 7 (24) (n = 29) | 16 (51) (n = 31) | 0.029 | 0.30 (95% CI 0.10–0.90) |
| Incisional wound infection | 2 (7) | 15 (48) | <0.001 | 0.08 (95% CI 0.02–0.39) |
| Subcutaneous abscesses | 5 (17) | 4 (13) | 0.660 | |
| Bowel content leakage | 5 (16) | 4 (12) | 0.648 | |
| Anastomotic leakage | 2 (10) (n = 21) | 4 (19) (n = 21) | 0.378 | |
| Transient small bowel lacerationa | 3 (9) | 0 (0) | 0.068 | |
| Intra-abdominal abscessb | 4 (13) | 2 (6) | 0.350 | |
| Enterocutaneous fistula | 3 (9) | 3 (9) | 0.938 | |
| Non-infected seroma | 5 (16) | 7 (21) | 0.452 | |
| Bleeding/hematoma | 4 (13) | 6 (18) | 0.560 | |
| Wound dehiscence needing NPWT | 6 (19) | 7 (21) | 0.666 | |
| Necrosis partial skin/subcutis | 1 (3) | 3 (9) | 0.332 | |
| Interventions extra-abdominal | ||||
| Radiologic subcutaneous drainage | 7 (22) | 8 (24) | 0.873 | |
| Opening wound and/or antibioticsc | 2 (7) (n = 29) | 15 (48) (n = 31) | <0.001 | 0.08 (95% CI 0.02–0.39) |
| Intervention for intra-abdominal complications | ||||
| Radiologic intra-abdominal drainage | 9 (28) | 8 (24) | 0.670 | |
| Relaparotomy | 0 (0) | 2 (6) | 0.262 | |
| Hospital stay days (IQR) | 19 (9–35) | 12 (8–22) | 0.161 | |
| Range | (5–120) | (2–105) | ||
| Emergency department visit | 9 (28) | 13 (38) | 0.223 | |
| Re-admission | 4 (13) | 6 (18) | 0.492 | |
| 30-day mortality | 0 (0) | 0 (0) | – | |
Bold values indicate p-value significant if less than 0.05
aOne patient had iatrogenic bowel perforation, two patients had a bowel perforation e.c.i
bIntra-abdominal abscess without any signs of anastomotic leakage or bowel perforation
cSpontaneously due to infection or therapeutic drainage