• Pain · Jun 2011

    Time-scheduled vs. pain-contingent opioid dosing in chronic opioid therapy.

    • Michael Von Korff, Joseph O Merrill, Carolyn M Rutter, Mark Sullivan, Cynthia I Campbell, and Constance Weisner.
    • Group Health Research Institute, Group Health Cooperative, 1730 Minor Ave., Suite 1600, Seattle, WA 98101, USA. Vonkorff.m@ghc.org
    • Pain. 2011 Jun 1;152(6):1256-62.

    AbstractSome expert guidelines recommend time-scheduled opioid dosing over pain-contingent dosing for patients receiving chronic opioid therapy (COT). The premise is that time-scheduled dosing results in more stable opioid blood levels and better pain relief, fewer adverse effects, less reinforcement of pain behaviors, and lower addiction risk. We report results of a survey of 1781 patients receiving COT for chronic noncancer pain, in which 967 reported time-scheduled opioid dosing only and 325 reported pain-contingent opioid dosing only. Opioid-related problems and concerns were assessed with the Prescribed Opioids Difficulties Scale. We hypothesized that respondents using time-scheduled opioid dosing would report significantly fewer problems and concerns than those using pain-contingent dosing. Patients receiving time-scheduled dosing received substantially higher average daily opioid doses than those using pain-contingent dosing (97.2 vs. 37.2mg average daily dose morphine equivalents, P < .0001). Contrary to expectation, time-scheduled opioid dosing was associated with higher levels of patient opioid control concerns than pain-contingent dosing (6.2 vs. 4.8, P=.008), after adjusting for patient and drug regimen differences. Opioid-related psychosocial problems were somewhat greater among patients using time-scheduled dosing, but this difference was nonsignificant after controlling for patient and drug regimen differences (5.9 vs. 5.0, P=.14). Time-scheduled dosing typically involved higher dosage levels and was associated with higher levels of patient concerns about opioid use. Controlled comparative effectiveness research is needed to assess benefits and risks of time-scheduled opioid dosing relative to pain-contingent opioid dosing among COT patients in ambulatory care. Patients with time-scheduled dosing received higher opioid dosage than patients with pain-contingent dosing. Time-scheduled dosing was associated with greater opioid control concerns than pain-contingent dosing.Copyright © 2011 International Association for the Study of Pain. Published by Elsevier B.V. All rights reserved.

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