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Anesth Analg 2007; 105:1437-1441
© 2007 International Anesthesia Research Society
doi: 10.1213/01.ane.0000281442.36582.81
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ANALGESIA

System-Related Events and Analgesic Gaps During Postoperative Pain Management with the Fentanyl Iontophoretic Transdermal System and Morphine Intravenous Patient-Controlled Analgesia

Sunil J. Panchal, MD*, C. V. Damaraju, PhD{dagger}, Winnie W. Nelson, PharmD, MS{ddagger}, David J. Hewitt, MD{dagger}, and Jeff R. Schein, DrPH, MPH{dagger}

From the *Coalition for Pain Education Foundation, Tampa, Florida; {dagger}Ortho-McNeil Janssen Scientific Affairs, LLC, Raritan, New Jersey; and {ddagger}Xcenda, Palm Harbor, Florida.

Address correspondence and reprint requests to Sunil J. Panchal, MD, 4911 Van Dyke Road, Lutz, FL 33558. Address e-mail to sunilpanchal2000{at}yahoo.com.

Abstract

BACKGROUND: Analgesic gaps (interruptions in analgesic delivery) contribute to ineffective postoperative pain management. In this analysis, we evaluated the incidence of analgesic gaps resulting from system-related events (SREs) for patients using the fentanyl iontophoretic transdermal system (ITS), a noninvasive patient-controlled analgesia (PCA) system, or morphine IV PCA for postoperative pain management.

METHODS: Data were pooled from two open-label, randomized, active-controlled trials that evaluated the efficacy and safety of fentanyl ITS and morphine IV PCA after total hip replacement, abdominal, or pelvic surgery. The incidence and duration of analgesic gaps resulting from SREs were assessed, along with SRE resolution times.

RESULTS: A total of 1305 patients received fentanyl ITS (n = 647) or morphine IV PCA (n = 658). Fentanyl ITS was associated with a significantly lower incidence of analgesic gaps per 100 patients compared with morphine IV PCA (5.87 vs 12.01, respectively; P < 0.001). Compared with patients receiving morphine IV PCA, patients receiving fentanyl ITS had both a numerically lower median total analgesic gap time (15.0 min vs 20.0 min) and a numerically lower median total SRE resolution time (11.0 min vs 20.0 min). Most fentanyl ITS SREs were resolved by applying a new system, whereas many different SRE resolution methods were used for morphine IV PCA.

CONCLUSIONS: Fentanyl ITS was associated with a significantly lower incidence of analgesic gaps relative to morphine IV PCA. Fentanyl ITS may provide patients with fewer interruptions and more continuous analgesic delivery.






Lippincott, Williams & Wilkins Anesthesia & Analgesia® is published for the International Anesthesia Research Society® by Lippincott Williams & Wilkins with the assistance of Stanford University Libraries' HighWire Press®. Copyright 2006 by the International Anesthesia Research Society. Online ISSN: 1526-7598   Print ISSN: 0003-2999 HighWire Press
Copyright © 2007 by the International Anesthesia Research Society.