Intra-biliary cleansing during secondary duodenoscopic removal of duodenal bend biliary stents: A retrospective cohort study

Figure 1 Flow diagram of patient selection. IBS: Integrated bile duct stent; SPBS: Single pigtail biliary stent; SPBSG: Single pigtail biliary stent group; DBBSG: Duodenal bend biliary stent group.

Figure 2 Kaplan-Meier curves for primary outcomes. A: Probability of chyme reflux by types of biliary stent; B: Probability of common bile duct stones by types of biliary stent; C: Probability of chyme reflux by sex; D: Probability of common bile duct stones by sex. HR: Hazard ratio; CI: Confidence interval; BS: Biliary stent; CBDS: Common bile duct stones; SPBS: Single pigtail biliary stent; DBBS: Duodenal bend biliary stent.

Figure 3 Hazard ratios and 95% confidence intervals of chyme reflux into the bile duct and common bile duct stones according to types of biliary stents. A: Hazard ratios and 95% confidence intervals of chyme reflux into the bile duct according to types of biliary stents; B: Hazard ratios and 95% confidence intervals of common bile duct stones according to types of biliary stents. HR: Hazard ratio; CI: Confidence interval; PBM: Pancreaticobiliary maljunction; EST: Endoscopic sphincterotomy; DP: Duodenal papillopathy; SOD: Sphincter of Oddi dysfunction; PDS: Pancreatic duct stent.