Six-month Survival of Patients with Malignant Distal Biliary Stricture Following Endoscopic Biliary Stent Procedure and Its Associated Factors
Background: unresectable malignant distal biliary stricture patients require endoscopic biliary stent placement procedure. The survival rate and its associated factors in Indonesia are unknown. Objectives. To identify 6-month survival of patients with malignant distal biliary stricture following endoscopic biliary stent procedure and its associated factors. Methods: a retrospective cohort study was conducted using medical records of patients with unresectable malignant distal biliary stricture, which involved caput of pancreas, ampulla of Vater or distal cholangiocarcinoma following endoscopic biliary stent procedure between June 2015 and August 2017 at Cipto Mangunkusumo National Central General Hospital. The cumulative survival was defined by using the Kaplan-Meier curve. Bivariate and multivariate analyses were performed using Cox regression of some factors including failure of biliary stent insertion, bleeding, sepsis, comorbidities, malnutrition, and serum albumin levels. Results: out of total 120 subjects, 85 subjects died within 6 months following the stent procedure with a proportion of 180-day survival of 24% and a median survival of 81 days (CI 95%: 56–106 days). In bivariate analysis, factors of comorbidities, sepsis, malnutrition and albumin levels ≤ 3.0 g/dL had p values of < 0.25; while the subsequent multivariate analysis showed that albumin level of ≤ 3.0 g/dL had HR of 2.73 (CI 95%: 1.48 – 5.05; p = 0.001). Conclusion: the 6-month survival following endoscopic biliary stent procedure is 24% with a median survival of 81 days. Albumin level of ≤ 3.0 g/dL has a 2.73 times greater risk for 6-month mortality rate.
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