Preoperative biliary drainage in patients with hilar cholangiocarcinoma undergoing major hepatectomy

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.