Outcomes of preoperative endoscopic nasobiliary drainage and endoscopic retrograde biliary drainage for malignant distal biliary obstruction prior to pancreaticoduodenectomy

Table 2 Changes in bilirubin and transaminase in patients who underwent endoscopic nasobiliary drainage or endoscopic retrograde biliary drainage prior to pancreaticoduodenectomy

Variable	ENBD	ERBD	P value
TB at admission (μmol/L)	198.92 ± 85.57	205.45 ± 93.69	0.667
ALT at admission (IU/L)	189.16 ± 161.52	158.41 ± 132.25	0.241
TB at 1 d before PD (µmol/L)	96.45 ± 74.90	66.01 ± 52.85	0.004
ALT at 1 d before PD (IU/L)	72.63 ± 50.66	49.73 ± 28.11	0.000
TB at discharge (μmol/L)	42.16 ± 42.57	28.45 ± 25.25	0.014
ALT at discharge (IU/L)	35.49 ± 22.65	34.74 ± 34.29	0.872

ENBD: Endoscopic nasobiliary drainage; ERBD: Endoscopic retrograde biliary drainage; PD: Pancreaticoduodenectomy; TB: Total bilirubin; ALT: Alanine aminotransferase.