Observational Study
Copyright ©The Author(s) 2017.
World J Gastroenterol. Dec 28, 2017; 23(48): 8597-8604
Published online Dec 28, 2017. doi: 10.3748/wjg.v23.i48.8597
Table 1 Clinical characteristics by common bile duct clearance at the index endoscopic retrograde cholangiopancreatography n (%)
VariablesGroup A (n = 166)Group B (n = 63)P value
Mean age68.4 ± 14.368.4 ± 14.10.93
Sex (M: F)70:9617:460.046
HTN65 (39.2)26 (41.3)0.88
IHD19 (11.4)7 (11.1)0.87
DM14 (8.4)4 (6.3)0.80
CLD1 (0.6)None0.60
COPD16 (9.6)5 (7.9)0.89
CKD7 (4.2)2 (3.2)0.98
Table 2 Outcome of index endoscopic retrograde cholangiopancreatography by stone characteristics and anatomical features of the biliary tree n (%)
VariablesGroup A (n = 166)Group B (n = 63)P value
Number of stones2 (1-13)3 (1-12)0.006
Median diameter of stones (mm)12.4 (4.5-30)17.4 (10.1-32)< 0.000001
Median diameter of duct (mm)12.4 (5-30)18.3 (9.2-30)0.001
Ampullary or peri-ampullary diverticulum37 (22.3)10 (15.9)0.370
Intact GB117 (70.5)50 (79.4)0.240
Primary stone disease118 (71.1)44 (69.8)0.980
Recurrent stone disease148 (28.9)19 (30.2)0.900
Table 3 Diameter of the balloon used
Balloon sizenPercent
10-11 mm6227%
12-15 mm13961%
16-18 mm2812%
Table 4 Procedure characteristics by outcomes of common bile duct stone extraction n (%)
VariablesGroup A (n = 166)Group B (n = 63)P value
Procedure time (min)30.5 (9-160)44 (12-90)0.0010
Number of ERCP (median)1 (1-3)2 (1-10)0.0001
Pre-cut sphincterotomy6 (3.6)2 (3.2)0.8000
Previous Sphincterotomy106 (63.9)42 (66.7)0.8000
Fresh Sphincterotomy58 (35.5)23 (36.5)0.9800
Median Balloon size diameter13 (10-18)13.5 (10-18)0.2200
Table 5 Adverse events after endoscopic papillary large balloon dilatation n (%)
VariablesGroup A (n = 166)Group B (n = 63)P value
Pancreatitis02 (3.2)0.13
Bleeding2 (1.2)00.93
CholangitisNoneNoneNA
PerforationNoneNoneNA
MortalityNoneNoneNA