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Six- versus 12-h conversion method from intravenous to transdermal fentanyl in chronic cancer pain: a randomized study.

Author(s): Nomura M, Kamata M, Kojima H, Hayashi K, Kozai M, Sawada S.

Affiliation(s): Department of Radiology, Kansai Medical University, 2-3-1 Shinmachi, Hirakata, Osaka 573-1191, Japan. excel@hkg.odn.ne.jp

Publication date & source: 2011, Support Care Cancer. , 19(5):691-5

PURPOSE: The objective of the present prospective study was to compare the safety and efficacy of a 12-h method to a 6-h method in chronic cancer pain management. MATERIALS AND METHODS: Randomized, prospective clinical trial was conducted between December 2007 and June 2009, enrolling 90 patients with chronic cancer pain. Patients with chronic cancer pain were randomly assigned to the conversion from continuous intravenous infusion to transdermal fentanyl using two-step taper of the continuous intravenous infusion in 12 h (12-h method) or the conversion in 6 h (6-h method). The parameters assessed in the present study included pain intensity (on a scale of 0 to 10) and bolus use frequency, and the adverse effects were assessed with National Cancer Institute Common Terminology Criteria for Adverse Events version 3. RESULTS: Pain intensity and the number of boluses during conversion remained stable in both arms. The incidence of adverse events was 25.6% in the 12-h method group and 2.3% in the 6-h method group (95% confidence interval, 0.01-0.55; p = 0.002). Adverse events occurred in four patients at 6-12 h, five patients at 12-18 h, two patients at 18-24 h, and one patient at 24-48 h after application. CONCLUSIONS: Excellent safety profile and sustained efficacy are shown for the 6-h conversion method.

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