Effect of preoperative biliary drainage on surgical results after pancreaticoduodenectomy in patients with distal common bile duct cancer: Focused on the rate of decrease in serum bilirubin

Table 4 Rate of decrease in serum bilirubin after preoperative biliary drainage n (%)

Factors	Total (n = 40)	Fast decrease group (n = 20)	Slow decrease group (n = 20)	P
Drainage methods				0.723
ENBD	29 (72.5)	14 (70)	15 (75)
PTBD	11 (27.5)	6 (30)	5 (25)
Complication				0.527
Uncomplicated	20 (50)	11 (55)	9 (45)
Complicated	20 (50)	9 (45)	11 (50)
Bpod1 (&mgr;mol/L)	1.9 ± 8.6	5.5 ± 4.4	-1.7 ± 9.9	0.004
Bpod2 (&mgr;mol/L)	2.2 ± 9.1	1.9 ± 4.3	2.4 ± 12.3	0.818

Variables are presented as mean ± SD, unless specified otherwise. ENBD: Endoscopic nasobiliary drainage; PTBD: percutaneous transhepatic biliary drainage; Bpod1: decrease in serum bilirubin during the first postoperative week; Bpod2: decrease in serum bilirubin during the second postoperative week.