• Radiology · Dec 1997

    Randomized Controlled Trial Clinical Trial

    Percutaneous biliary drainage: clinical trial of analgesia with interpleural block.

    • E Therasse, M Choinière, G Soulez, V L Oliva, P Rousseau, F Fugère, D Boudreault, and J R Cusson.
    • Department of Radiology, University of Montreal Medical Center, Quebec, Canada.
    • Radiology. 1997 Dec 1; 205 (3): 663-8.

    PurposeTo determine the analgesic efficacy and safety of interpleural block for percutaneous biliary drainage.Materials And MethodsIn this double-blind study, 34 age- and sex-matched patients who were to undergo percutaneous biliary drainage because of malignant biliary obstruction were randomly assigned to the true-block group (30 mL 0.5% bupivacaine block) or placebo-block group; all had access to a patient-controlled analgesia (fentanyl) pump. Self medication, pain reports, blood pressure, heart rate, and oxygen saturation were monitored during and until 8 hours after drainage. The McGill Pain Questionnaire was administered 1 hour after biliary drainage.ResultsPatients in the placebo group self administered statistically significantly more fentanyl than did patients in the true-block group (P = .008). Peak pain scores (10-point scale) and McGill Pain Questionnaire scores were statistically significantly higher for the placebo group patients (P = .017 and P = .001, respectively). There were no differences between groups in terms of blood pressure, heart rate, and oxygen saturation. Two patients had pneumothorax caused by the interpleural block.ConclusionInterpleural block was effective in decreasing pain and opioid requirements during and after percutaneous biliary drainage and did not compromise the cardiopulmonary status of the patient. However, the rate of pneumothorax was higher than previously reported.

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