Recent advances in endoscopic retrograde cholangiopancreatography in Billroth II gastrectomy patients: A systematic review

Table 2 Detailed characteristics of the most recently published studies with more than 100 patients

	Bove et al[17], 2015	Wu et al[18], 2016	Park et al[19], 2016
	(n = 713)	(n = 135)	(n = 165)
Study design	Retrospective cohort in single center	Retrospective cohort in single center	Retrospective cohort in 5 centers
Male gender, n (%)	567 (79.5)	N/A	116 (70.3)
Age (yr), n (%) or mean ± SD	> 60 yr, 565 (79.2)	N/A	71.1 ± 10.0
Type of endoscope	Side-viewing or forward-viewing	Side-viewing	Cap-fitting forward- viewing
Type of sphincter therapy	EST	EST	EPBD±NK
Success of afferent loop intubation, n (%)	618/713 (86.7)	120/135 (88.8)	151/165 (91.5)
Success of selective cannulation, n (%)	580/618 (93.8)	117/120 (97.5)	144/151 (95.4)
Bowel perforation, n (%)	22/713 (3.1)	1/135 (0.7)	3/165 (1.8)
Post-ERCP pancreatitis, n (%)	5/713 (0.7)	N/A	13/165 (7.9)
Bleeding, n (%)	11/713 (1.5)	N/A	-
Mortality, n (%)	2/713 (0.3)	-	-

ERCP: Endoscopic retrograde cholangiopancreatography; SD: Standard deviation; EST: Endoscopic sphincterotomy; NK: Needle knife; EPBD: Endoscopic papillary balloon dilation; N/A: Not available.