Table 1.
Description of patients’ characteristics, clinical presentation and surgical outcome before/after standardization
| Patient characteristics | Total [n = 37] | 2012–2017 [n = 19] | 2017–2022 [n = 18] | p value |
|---|---|---|---|---|
| Age (median) | 43 (24–65) | 44 (30–65) | 42 (24–54) | 0.54 |
| Sex m/f (%) | 5/32 (13.5 /86.5) | 3/16 (16/84) | 2 /16 (11/89) | 0.68 |
| BMI at index RYGB (kg/m2) | 49.3 (32.0–69.1) | 51.7 (40.1–69.1) | 46.8 (32.0–61.6) | 0.052 |
| BMI at internal hernia revision (kg/m2) | 32.9 (20.4–54.7) | 34.5 (21.8–54.7) | 31.2 (20.4–45)) | 0.20 |
| Weight loss since index surgery (BMI points) | 17.2 (+ 2.7–33.8) | 17.1 (0–30) | 17.2 (+ 2.7–33.8) | 0.96 |
| Time interval from RYGB (months) | 34 (0–124) | 30 (0–94) | 38 (6–124) | 0.43 |
| Clinical appearance | ||||
| Abdominal pain | 37 (100) | 19 (100) | 18 (100) | 1 |
| Intermittent abdominal pain | 18/37 (48.6) | 7/19 (36.8) | 11/18 (61.1) | 0.13 |
| CT scan result: hurricane-eye-sign | 31/36 (86.1) | 16/19 (84.2) | 15/17 (88.2) | 0.55 |
| Free-abdominal-fluid | 18/36 (50) | 10/19 (52.6) | 8/17 (47.1)) | 0.55 |
| SWIRL score > 1 | 24/37 (64.9) | 13/19 (68.4) | 11/17 (61.1) | 0.68 |
| SWIRL score > 2 | 8/37 (21.6) | 2/19 (10.5) | 6/17 (33.3) | 0.042 |
| Diameter intestine in mm (CT-scan) | 26 (16–55) | 28 (16–55) | 25 (19–44) | 0.49 |
| Emergency surgery (< 6 h) | 31 (83.8) | 16 (84.2) | 15 (83.3) | 0.94 |
| Operative outcome | ||||
| Conversion or primary open1 | 11 (29.7) | 10 (52.6) | 1 (5.6) | 0.007 |
| Duration of surgery (min) | 53 (30–134) | 92 (41–134) | 39 (30–117) | 0.003 |
| Clavien-Dindo classification | ||||
| < Grade IIIa (%) | 4 (10.8) | 4 (21.1) | 0 | 0.012 |
| Grade IIIb (%) | 1 (2.7) | 1 (5.3) | 0 | 0.85 |
| > Grade IIIb (%) | 0 | 0 | 0 | 1 |
| CCI (MW 95% CI) | 3,5 (0–33.7) | 6.4 (0–33.7) | 0.5 (0–8.7) | 0.065 |
| Length-of-stay, days | 5.3 (1–35) | 7.7 (2–35) | 2.8 (1–12) | 0.019 |
| In-hospital mortality | 0 | 0 | 0 | 1 |
1One case primary open surgery