Interventional procedure overview of endoscopic ultrasound-guided biliary drainage for biliary obstruction
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Outcome measures
The main efficacy outcomes included technical success and clinical success according to reduction in symptoms or bilirubin levels.
Relief of biliary obstruction can be determined through measuring bilirubin serum levels; in several of the key studies reduction of serum bilirubin by at least 50% was the threshold for clinical success of EUS-BD.
Improvement in quality of life was used as a secondary efficacy outcome in 1 study. It was evaluated using the EORTC QLQ-C30, which measures the physical, psychological and social functions of people with cancer and may be of use for people with malignant biliary obstruction.
Other key measurements include stent patency, survival and improvement in quality of life, and rates of reintervention.
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