Comparison of clinical outcomes for single- and double-balloon enteroscope-assisted endoscopic retrograde cholangiopancreatography in patients with surgically altered anatomy

Table 2 Endoscopic findings between double-balloon enteroscopy and single-balloon enteroscopy group, n (%)/mean ± SD

Variable	DBE (n = 247)	SBE (n = 247)	P value
Type of JJstomy			0.002
None	59 (23.9)	70 (28.3)
End to side	48 (19.4)	75 (30.4)
Side to side	140 (56.7)	102 (41.3)
Preserved gastric anatomy	124 (50.2)	69 (27.9)	< 0.001
Used scope			< 0.001
Long DBE	15 (6.1)	0 (0.0)
Short DBE	222 (89.9)	0 (0.0)
Short DBE ≥ long DBE	2 (0.8)	0 (0.0)
Long DBE ≥ short DBE	8 (3.2)	0 (0.0)
Short SBE	0 (0.0)	230 (93.1)
Short SBE ≥ long SBE	0 (0.0)	3 (1.2)
Long SBE ≥ short SBE	0 (0.0)	14 (5.7)
Periampullary diverticulum	16 (6.5)	21 (8.5)	0.494
Time for intubation to JJ, minutes	6.4 ± 7.7	11.2 ± 10.8	< 0.001
Successful intubation time, minutes	14.1 ± 13.5	23.5 ± 22.3	< 0.001
Total procedure time, minutes	31.0 ± 18.5	65.2 ± 37.9	< 0.001
Selective cannulation time, minutes	3.9 ± 8.1	3.7 ± 6.8	0.780
Naive papilla	111 (44.9)	123 (49.8)	0.247
Intubation failure	14 (5.7)	9 (3.6)	0.393
Selective cannulation failure	26 (10.5)	16 (6.5)	0.147
Difficult cannulation	48 (19.4)	50 (20.2)	0.910
Double guidewire method	9 (3.6)	20 (8.1)	0.056
Pancreatic duct injection	14 (5.7)	3 (1.2)	0.014
Pancreatic sphincterotomy	0 (0.0)	2 (0.8)	0.479
EPBD	59 (23.9)	152 (61.5)	< 0.001
EST	5 (2.0)	70 (28.3)	< 0.001
Endobiliary biopsy	10 (4.0)	32 (13.0)	0.001
Intraductal balloon dilation	35 (14.2)	29 (11.7)	0.503
Biliary stent placement	90 (36.4)	69 (27.9)	0.054
Pancreatic stent placement	36 (14.6)	21 (8.5)	0.049

DBE: Double-balloon enteroscopy; SBE: Single-balloon enteroscopy; JJstomy: Jejunojejunostomy; EPBD: Endoscopic papillary balloon dilation; EST: Endoscopic sphincterotomy.