Clinical observation of laparoscopic cholecystectomy combined with endoscopic retrograde cholangiopancreatography or common bile duct lithotripsy

Table 3 Comparison of liver function index levels before and after surgery between the two groups (mean ± SD)

Groups	DBIL (umol/L)	TBIL (umol/L)	ALT (U/L)
Pre-operative
Research Group (n = 47)	182.10 ± 82.33	258.62 ± 100.54	38.56 ± 7.18
Control group (n = 47)	178.89 ± 79.59	261.45 ± 96.77	40.04 ± 6.69
t value	0.198	0.139	1.034
P value	0.844	0.890	0.304
1 d after surgery
Research Group (n = 47)	93.37 ± 40.02a	156.98 ± 83.31a	26.83 ± 6.65a
Control group (n = 47)	111.51 ± 36.33a	191.03 ± 72.12a	30.13 ± 7.92a
t value	2.301	2.118	2.188
P value	0.024	0.037	0.031

^aP < 0.05 vs this group preoperatively.

DBIL: serum direct bilirubin; TBIL: total bilirubin; ALT: alanine aminotransferase.