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

Table 3 Results of the systematic review

	No. (%)
Study design, n (%)
Retrospective cohort	36/43 (83.7)
Retrospective comparative	4/43 (9.3)
Prospective comparative	2/43 (4.7)
Prospective cohort	1/43 (2.3)
Total number of identified patients	2669
1Type of endoscope, n (%)
Side-viewing endoscope	1432/2575 (55.6)
Forward-viewing endoscope	664/2575 (25.8)
Balloon-assisted enteroscope	197/2575 (7.7)
Anterior oblique-viewing endoscope	169/2575 (6.6)
Dual-lumen endoscope	64/2575 (2.5)
Colonoscope	31/2575 (1.2)
Multiple bending endoscope	14/2575 (0.5)
Others	4/2575 (0.2)
Overall success of afferent loop intubation, n (%)	2437/2669 (91.3)
Overall success of selective cannulation, n (%)	2346/2437 (87.9)
Overall adverse events, n (%)	195 (7.3)
Bowel perforation	74 (2.8)
Post-ERCP pancreatitis	65 (2.4)
Bleeding	37 (1.4)
Mortality	9 (0.3)
2Others	10 (0.4)

¹Total number can be changed due to unavailable or incomplete specific data;

²Cholangitis (n = 7), respiratory insufficiency (n = 1), aspiration pneumonia (n =1), and cholecystitis (n = 1). ERCP: Endoscopic retrograde cholangiopancreatography.