Table 3.
Intraoperative characteristics in the modified intention-to-treat population.
| RPD n = 29 | OPD n = 33 | Difference with 95% CI | p value | |
|---|---|---|---|---|
| Duration of surgery (minutes)a | 431 ± 103 | 367 ± 106 | 64 [10; 118] | 0.021 |
| Serious intraoperative complicationd | 0 (0.0%) | 1b (3.0%) | ||
| Blood loss (ml)a | 742 ± 512 | 814 ± 685 | −72 [−385; 240] | 0.645 |
| Blood transfusion | 3 (10.3%) | 2 (6.1%) | 4.3% [−9.5%; 18.0%] | 0.536 |
| Degree of stomach resection | 0.010 | |||
| Pylorus-preserving | 5 (17.2%) | 18 (54.5%) | ||
| Pylorus-resecting | 21 (72.4%) | 13 (39.4%) | ||
| Classicc | 2 (6.9%) | 0 (0.0%) | ||
| (Sub)total gastrectomy | 1 (3.4%) | 2 (6.1%) | ||
| Degree of SMA dissection | 0.170 | |||
| Inoue level 1 | 6 (20.7%) | 11 (33.3%) | ||
| Inoue level 2 | 20 (69.0%) | 15 (45.5%) | ||
| Inoue level 3 | 3 (10.3%) | 7 (21.2%) | ||
| Triangle procedure performed | 12 (41.4%) | 12 (36.4%) | 5.0% [−19.3%; 29.3%] | 0.686 |
| Arterial resection performed | 0 (0.0%) | 2 (6.1%) | ||
| Venous resection performed | 5 (17.2%) | 3 (9.1%) | 8.2% [−8.7%; 25.0%] | 0.339 |
| Number of resected lymph nodes (N)a | 29 ± 14 | 26 ± 9 | 3 [−6; 11] | 0.536 |
| Resection of additional organs performed beyond PD | 4 (13.8%) | 6 (18.2%) | −4.4% [−22.6%; 13.8%] | 0.639 |
| Texture of pancreas | 0.068 | |||
| Soft | 13 (44.8%) | 12 (36.4%) | ||
| Medium | 12 (41.4%) | 8 (24.2%) | ||
| Hard | 4 (13.8%) | 13 (39.4%) | ||
| Size of pancreatic duct at transection site | 0.719 | |||
| ≤3 mm | 11 (37.9%) | 14 (42.4%) | ||
| >3 mm | 18 (62.1%) | 19 (57.6%) | 4.5% [−19.9%; 28.9%] | |
| Drain insertion | 27 (93.1%) | 21 (63.6%) | 29.5% [10.6%; 48.3%] | 0.006 |
| NASA total scorea,d | 50.4 ± 13.7 | 49.7 ± 16.9 | 0.8 [−7.2; 8.7] | 0.845 |
Values in parentheses are percentages unless indicated otherwise.
a
Values are mean ± SD; Differences with p values < 0.05 were deemed statistically significant and these p values are presented in bold; in cases with zero count in one of the treatment groups no p values are presented.
b
Case with intraoperative venous gastric stasis.
c
1/3 Resection of stomach.
d
Calculation of NASA Total score was slightly modified as the weighting of the individual components of the score was not requested by the surgeons., SMA: superior mesenteric artery, PD: pancreatoduodenectomy.