Table 2.
Surgical outcomes for patients with simple appendicitis (AAST grade I) and complicated appendicitis (AAST grade ≥ II) classified by indwelling abdominal drainage status
| Simple appendicitis (AAST I, n = 820) | Complicated appendicitis (AAST II/III/IV/V, n = 421) | ||||||
|---|---|---|---|---|---|---|---|
| + drainage (N = 82) | − drainage (N = 738) | P value | + drainage (N = 192) | − drainage (N = 229) | P value | P value1 | |
| Surgical time, mins, [median (Q1, Q3)] | 44.00 (35, 59) | 45.00 (30, 57) | 0.1190 | 65.00 (50, 80) | 60.00 (50, 91.5) | 0.0357 | < 0.0001 |
| Method of stump closure, n (%) | < 0.0001 | < 0.0001 | < 0.0001 | ||||
| Endostapler | 6 (7.32) | 54 (7.32) | 26 (13.54) | 72 (31.44) | |||
| Endoloop (SurgiTie®) | 45 (54.88) | 193 (26.15) | 81 (42.19) | 39 (17.03) | |||
| Hem-o-lok® clips | 23 (28.05) | 456 (61.79) | 66 (34.38) | 105 (45.85) | |||
| Intracorporeal suture | 4 (4.88) | 14 (1.90) | 15 (7.81) | 8 (3.49) | |||
| Endoclips | 4 (4.88) | 21 (2.85) | 4 (2.08) | 5 (2.18) | |||
| The Clavien–Dindo Classification of complications, n (%) | 0.0431 | 0.9960 | 0.1465 | ||||
| I/II | 6 (85.71) | 21 (95.45) | 55 (82.09) | 32 (82.05) | |||
| III/IV | 1 (14.29) | 1 (4.55) | 12 (17.91) | 7 (17.95) | |||
| Complications Wound infection, n (%) | 12 (14.63) | 43 (5.83) | 0.0025 | 26 (13.54) | 26 (11.35) | 0.4968 | 0.0008 |
| Intra-abdominal abscess, n (%) | 1 (1.22) | 0 (0.00) | 0.1000 | 7 (3.65) | 5 (2.18) | 0.3941 | < 0.0001 |
| Ileus, n (%) | 2 (2.44) | 3 (0.41) | 0.0809 | 29 (15.10) | 10 (4.37) | 0.0002 | < 0.0001 |
| Time to resume a soft diet, hrs [median (Q1, Q3)] | 20.38 (10.70, 24.07) | 16.25 (11.73, 39.85) | 0.0044 | 46.95 (13.08, 38.48) | 22.07 (20.00, 81.25) | < 0.0001 | < 0.0001 |
| Postoperative hospitalization, hrs [median (Q1, Q3)] | 63.24 (38.33,63.58) | 52.41 (47.60, 103.13) | < 0.0001 | 115.65 (52.12, 98.85) | 68.42 (81.29, 161.45) | < 0.0001 | < 0.0001 |
| Readmission, n (%) | 3 (3.66) | 4 (0.54) | 0.0251 | 4 (2.08) | 4 (1.75) | > 0.9999 | 0.1102 |
1 P value was calculated between simple appendicitis (AAST I) and complicated appendicitis (AAST II/III/IV/V)
AAST, The American Association for the Surgery of Trauma