Table 1.
Baseline characteristics n (%)
| Drained (n = 32) | Undrained (n = 46) | P value | |
| Age (yr) | 59.6 ± 11.0 | 58.2 ± 11.3 | 0.568 |
| Sex (M/F) | 21/11 | 28/18 | 0.669 |
| Body mass index (kg/m2) | 20.3 ± 1.9 | 21.0 ± 2.5 | 0.190 |
| Concomitant diseases | |||
| Diabetes | 2 (6.3) | 3 (6.5) | 1.000 |
| Hypertension | 3 (9.4) | 7 (15.2) | 0.678 |
| Cardiovascular | 2 (6.3) | 5 (10.9) | 0.765 |
| Previous history of abdominal surgery | 9 (28.1) | 12 (26.1) | 0.842 |
| Serum total bilirubin (μmol/L) | |||
| At admission | 294.2 ± 135.7 | 254.0 ± 63.5 | 0.126 |
| Before surgery | 108.1 ± 60.6 | 265.7 ± 69.1 | 0.000 |
| Time of PBD (d) | 15.3 ± 3.4 | - | - |
| Time between admission and surgery (d) | 20.7 ± 2.1 | 3.8 ± 1.6 | 0.000 |
| Portal vein embolization | 5 (15.6) | 3 (6.5) | 0.355 |
| Bismuth–Corlette classification | |||
| I | 1 (3.1) | 1 (2.2) | 1.000 |
| II | 8 (25) | 14 (30.4) | 0.600 |
| IIIa | 6 (18.8) | 7 (15.2) | 0.680 |
| IIIb | 9 (28.1) | 15 (32.6) | 0.673 |
| IV | 8 (25) | 9 (19.6) | 0.567 |
| Perioperative details | |||
| Hilar bile duct resection | 32 (100) | 46 (100) | - |
| Left hepatectomy | 17 (53.1) | 31 (67.4) | 0.203 |
| Extended left hepatectomy | 2 (6.3) | 1 (2.2) | 0.747 |
| Right hepatectomy | 8 (25) | 10 (21.7) | 0.737 |
| Extended right Hepatectomy | 5 (15.6) | 4 (8.7) | 0.561 |
| Caudate lobectomy | 8 (25) | 12 (26.1) | 0.914 |
| Pedicle clamping | 17 (53.1) | 26 (56.5) | 0.767 |
| Portal vein resection | 6 (18.8) | 8 (17.4) | 0.878 |
| Hepatic artery resection | 2 (6.3) | 3 (6.5) | 1.000 |
| Number of blood Transfusions | 11 (34.4) | 24 (52.2) | 0.120 |
| Intraoperative blood transfusion (mL) | 900 (800-900) | 800 (600-1100) | 0.513 |
PBD: Preoperative biliary drainage.