JOURNAL ARTICLE

Analysis of the factors involved in procedural failure: Endoscopic retrograde cholangiopancreatography using a short-type single-balloon enteroscope for patients with surgically altered gastrointestinal anatomy

Yuki Tanisaka, Shomei Ryozawa, Masafumi Mizuide, Maiko Harada, Akashi Fujita, Tomoya Ogawa, Kouichi Nonaka, Tomoaki Tashima, Ryuichiro Araki
Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society 2019, 31 (6): 682-689
30942924

AIM: To analyze factors involved in procedural failure and to discuss responses to procedural failure by using the outcomes of endoscopic retrograde cholangiopancreatography (ERCP) carried out using a short-type single-balloon enteroscope (short SBE) in patients with surgically altered gastrointestinal anatomy.

METHODS: The study sample included patients who underwent ERCP-related procedures using a short SBE between September 2011 and September 2018 at our hospital. Outcomes, including procedural success rate, were studied retrospectively to analyze the factors involved in procedural failure.

RESULTS: Analysis included 191 procedures carried out in 121 patients. Procedural success rate was 85.9% with an adverse event rate of 8.4%. Causes of procedural failure included malignant biliary obstruction (odds ratio [OR] 2.89, 95% confidence interval [CI] 1.19-7.25, P = 0.02), first ERCP attempt (OR: 5.32, 95% CI: 1.30-36.30, P = 0.02), and Roux-en-Y reconstruction (OR: 0.08, 95% CI: 0.004-0.39, P < 0.001). With regard to the response to failure, in cases of malignant biliary obstruction, reattempted short SBE-assisted ERCP was difficult because of invasion of the small intestine or papilla. A large number of these cases required alternative treatment (10 of 15 cases, 66.7%) using percutaneous transhepatic biliary drainage (PTBD) or endoscopic ultrasound-guided biliary drainage (EUS-BD).

CONCLUSION: Endoscopic retrograde cholangiopancreatography using a short SBE is safe and effective, with malignant biliary obstruction being a specific cause of failure. Technical proficiency with different modalities, such as PTBD and EUS-BD, is necessary to respond to failure in these cases.

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