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Using air cholangiography to reduce postendoscopic retrograde cholangiopancreatography cholangitis in patients with malignant hilar obstruction.

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Background Cholangitis after endoscopic retrograde cholangiopancreatography (ERCP) is a major problem for patients with hilar biliary obstruction. To date, it remains unclear whether air-contrast cholangiography (ACC) can reduce cholangitis in… Click to show full abstract

Background Cholangitis after endoscopic retrograde cholangiopancreatography (ERCP) is a major problem for patients with hilar biliary obstruction. To date, it remains unclear whether air-contrast cholangiography (ACC) can reduce cholangitis in these patients. For this reason, our study assesses the efficacy of reducing cholangitis through ACC. Methods This paper presents a retrospective study conducted at a tertiary university hospital. We enrolled patients who were diagnosed with hilar structures and underwent ERCP between January 2012 and December 2018. From 2015 onwards, ACC was performed following the successful selective cannulation into the dilated intrahepatic bile duct of these patients. The primary aim was to assess patients with cholangitis in both an ACC group and iodine contrast cholangiography (ICC) group. Results This study included 80 patients, 35 of whom received ACC and 45 who received ICC. There were no differences between the 2 groups in terms of the number of patients who underwent endoscopic papillotomy, endoscopic nasobiliary drainage, endoscopic biliary stent placement, or other technical procedures or complications. A total of 19 patients (23.8%) presented with fever (cholangitis) after the ERCP procedure (4 ACC, 15 ICC; 11.4% vs. 33.3%, respectively; P=0.03). One patient in the ICC group who obtained a plastic stent for palliative drainage died 2 weeks post-ERCP. Among the other 18 cholangitis patients, 8 (1 ACC, 7 ICC) were treated with additional ERCP or percutaneous transhepatic biliary drainage (PTBD), while the remaining 10 only received antibiotics. One patient in the ICC group who obtained a plastic stent for palliative drainage died 2 weeks post-ERCP. Conclusions We found that ACC significantly reduced the incidence of cholangitis in patients with hilar obstruction.

Keywords: cholangitis; cholangiography; cholangitis patients; retrograde cholangiopancreatography; hilar obstruction

Journal Title: Quantitative imaging in medicine and surgery
Year Published: 2022

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