BACKGROUND: Endoscopic retrograde cholangiopancreatography (ERCP) is technically challenging in Roux-en-Y gastric bypass (RYGB). Current approaches either have high failure rate, are resource intensive, or invasive. OBJECTIVE: To describe successful adoption of an old technique for performance of ERCP in patients with RYGB anatomy employing enteroscopy with the assistance of a percutaneously placed guidewire, which facilitates both reaching and cannulating the major papilla. METHOD: A retrospective cohort study in a tertiary-care center. We included patients with RYGB from 2015 to 2017 who underwent ERCP. We compared success rate and adverse events between rendezvous guidewire-assisted (RGA) and balloon-assisted enteroscopy (BAE) ERCP techniques. RESULTS: Thirty patients with RYGB underwent 62 ERCPs. The mean age was 62.2 ± 11 years with female predominance 83.3%. The procedures were performed using BAE 43/62 (69.3%), RGA 13/62 (21%), gastrostomy tube 5/62 (8.1%), and colonoscope 1/62 (1.6%). In patients with a native papilla (n = 37 ERCPs), clinical success rate with BAE was 36.8% compared to 100% with RGA (P < 0.001). There was no significant difference in bleeding (P = 0.17), post-ERCP pancreatitis (P = 0.4), or luminal perforation (P = not estimated) between the two techniques in native papilla. The mean procedure time with the RGA was significantly shorter than successful BAE with mean difference: 33 min (95% CI 8-57 min, P = 0.01). Twenty-five ERCPs were performed in eight patients with non-native papilla. BAE success rate in non-native papilla was 95.8%. The mean procedure time of the BAE in non-native papilla was 111 ± 60 min. Native papillae were associated with a significantly higher BAE failure rate compared to non-native papillae (OR: 12; 95% CI 1.44-99.7, P = 0.02). CONCLUSION: In patients with RYGB, RGA appears to be highly successful and safe in achieving clinical success for patients with native papilla as compared to BAE.
BACKGROUND: Endoscopic retrograde cholangiopancreatography (ERCP) is technically challenging in Roux-en-Y gastric bypass (RYGB). Current approaches either have high failure rate, are resource intensive, or invasive. OBJECTIVE: To describe successful adoption of an old technique for performance of ERCP in patients with RYGB anatomy employing enteroscopy with the assistance of a percutaneously placed guidewire, which facilitates both reaching and cannulating the major papilla. METHOD: A retrospective cohort study in a tertiary-care center. We included patients with RYGB from 2015 to 2017 who underwent ERCP. We compared success rate and adverse events between rendezvous guidewire-assisted (RGA) and balloon-assisted enteroscopy (BAE) ERCP techniques. RESULTS: Thirty patients with RYGB underwent 62 ERCPs. The mean age was 62.2 ± 11 years with female predominance 83.3%. The procedures were performed using BAE 43/62 (69.3%), RGA 13/62 (21%), gastrostomy tube 5/62 (8.1%), and colonoscope 1/62 (1.6%). In patients with a native papilla (n = 37 ERCPs), clinical success rate with BAE was 36.8% compared to 100% with RGA (P < 0.001). There was no significant difference in bleeding (P = 0.17), post-ERCP pancreatitis (P = 0.4), or luminal perforation (P = not estimated) between the two techniques in native papilla. The mean procedure time with the RGA was significantly shorter than successful BAE with mean difference: 33 min (95% CI 8-57 min, P = 0.01). Twenty-five ERCPs were performed in eight patients with non-native papilla. BAE success rate in non-native papilla was 95.8%. The mean procedure time of the BAE in non-native papilla was 111 ± 60 min. Native papillae were associated with a significantly higher BAE failure rate compared to non-native papillae (OR: 12; 95% CI 1.44-99.7, P = 0.02). CONCLUSION: In patients with RYGB, RGA appears to be highly successful and safe in achieving clinical success for patients with native papilla as compared to BAE.
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