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Reasons for discontinuation of long-term opioid therapy in patients with and without substance use disorders.
Lovejoy TI, Morasco BJ, Demidenko MI, Meath TH, Frank JW, Dobscha SK. Reasons for discontinuation of long-term opioid therapy in patients with and without substance use disorders. Pain. 2017 Mar 1; 158(3):526-534.
Several factors may accelerate opioid discontinuation rates, including lack of information about the long-term effectiveness of opioids for chronic pain, heightened awareness about opioid-related adverse events, closer monitoring of patients for opioid-related aberrant behaviors, and greater restrictions around opioid prescribing. Rates of discontinuation may be most pronounced in patients deemed to be at "high risk." The purpose of this study was to compare reasons for discontinuation of long-term opioid therapy (LTOT) between patients with and without substance use disorder (SUD) diagnoses receiving care within a major U.S. health care system. This retrospective cohort study assembled a cohort of Veterans Health Administration patients prescribed opioid therapy for at least 12 consecutive months who subsequently discontinued opioid therapy for at least 12 months. From this cohort, we randomly selected 300 patients with SUD diagnoses and propensity score-matched 300 patients without SUD diagnoses. A comprehensive manual review of patients' medical records ascertained reasons for LTOT discontinuation. Most patients (85%) were discontinued as a result of clinician, rather than patient, decisions. For patients whose clinicians initiated discontinuation, 75% were discontinued because of opioid-related aberrant behaviors. Relative to patients without SUD diagnoses, those with SUD diagnoses were more likely to discontinue LTOT because of aberrant behaviors (81% vs 68%), most notably abuse of alcohol or other substances. This is the first study to document reasons for discontinuation of LTOT in a sample of patients with and without SUD diagnoses. Treatments that concurrently address SUD and chronic pain are needed for this high-risk population.