alexa Transdermal fentanyl in children with cancer pain: feasibility, tolerability, and pharmacokinetic correlates.
General Science

General Science

Journal of Forensic Research

Author(s): Collins JJ, Dunkel IJ, Gupta SK, Inturrisi CE, Lapin J, , Collins JJ, Dunkel IJ, Gupta SK, Inturrisi CE, Lapin J,

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Abstract OBJECTIVES: (1) To assess the feasibility and tolerability of the therapeutic transdermal fentanyl system (TTS-fentanyl) by using a clinical protocol developed for children with cancer pain. (2) To estimate the pediatric pharmacokinetic parameters of TTS-fentanyl. METHODS: The drug was administered in open-label fashion; and measures of analgesia, side effects, and skin changes were obtained for a minimum of 2 doses (6 treatment days). Blood specimens were analyzed for plasma fentanyl concentrations. The pharmacokinetics of TTS-fentanyl were estimated by using a mixed effect modeling approach. RESULTS: Treatment was well tolerated. Ten of the 11 patients who completed the 2 doses continued treatment with TTS-fentanyl. The duration of treatment ranged from 6 to 275 days. The time to reach peak plasma concentration ranged from 18 hours to >66 hours in patients receiving the 25 microg/h patch. Compared with published pharmacokinetic data from adults, the mean clearance and volume of distribution of transdermal fentanyl were the same, but the variability was less. CONCLUSIONS: Treatment of children with TTS-fentanyl is feasible and well tolerated and yields fentanyl pharmacokinetic parameter estimates similar to those for adults. A larger study is required to confirm these findings and further test the clinical protocol.
This article was published in J Pediatr and referenced in Journal of Forensic Research

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