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Long-term follow-up study of community-based patients receiving XR-NTX for opioid use disorders.

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Title: Long-term follow-up study of community-based patients receiving XR-NTX for opioid use disorders.
Authors: Williams, Arthur Robin, Barbieri, Vincent, Mishlen, Kaitlyn, Levin, Frances R., Nunes, Edward V., Mariani, John J., Bisaga, Adam
Source: American Journal on Addictions. Jun2017, Vol. 26 Issue 4, p319-325. 7p.
Subjects: Naltrexone, Drug abuse treatment, Opioid abuse, Substance abuse treatment, Drug side effects, Patient compliance, Therapeutics, Substance abuse & psychology, Narcotic antagonists, Controlled release preparations, Drugs, Health attitudes, Longitudinal method, Substance abuse
Abstract: Background and Objectives: Extended-release naltrexone (XR-NTX) is FDA-approved to prevent relapse in patients with Opioid Use Disorder. However little is known about long-term use among community-based outpatients.Methods: Retrospective chart review and long-term follow-up survey among individuals (N = 168) who entered an outpatient XR-NTX trial between 2011 and 2015, during which participants were offered three monthly injections of XR-NTX at no cost. The survey consisted of 35 questions covering a total of four domains: (1) substance use; (2) treatment continuation; (3) barriers; and (4) attitudes.Results: Fifty-seven respondents were successfully surveyed, including 50% of those initially receiving all three XR-NTX injections ("study completers") in the parent study. Study completion was associated with superior outcomes and less likely relapse (defined as daily use), with a much greater time to relapse despite higher rates of concurrent non-opioid substance use. However the majority of participants discontinued treatment with XR-NTX at study completion, largely due to attitudes of "feeling cured" and "wanting to do it on my own" rather than external barriers such as cost or side effects.Conclusion: Patients who initiate treatment with XR-NTX might benefit from anticipatory guidance and motivational techniques to encourage long-term adherence as many will experience internal barriers to continuation. Our findings are reassuring that few patients experience side effects or adverse events complicating the effectiveness or safety of long-term use of XR-NTX.Scientific Significance: Among outpatients who successfully receive 3 monthly XR-NTX injections, many will prematurely discontinue treatment due to internal attitudes, such as "feeling cured." (Am J Addict 2017;26:319-325). [ABSTRACT FROM AUTHOR]
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Database: Psychology and Behavioral Sciences Collection
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Abstract:<bold>Background and Objectives: </bold>Extended-release naltrexone (XR-NTX) is FDA-approved to prevent relapse in patients with Opioid Use Disorder. However little is known about long-term use among community-based outpatients.<bold>Methods: </bold>Retrospective chart review and long-term follow-up survey among individuals (N = 168) who entered an outpatient XR-NTX trial between 2011 and 2015, during which participants were offered three monthly injections of XR-NTX at no cost. The survey consisted of 35 questions covering a total of four domains: (1) substance use; (2) treatment continuation; (3) barriers; and (4) attitudes.<bold>Results: </bold>Fifty-seven respondents were successfully surveyed, including 50% of those initially receiving all three XR-NTX injections ("study completers") in the parent study. Study completion was associated with superior outcomes and less likely relapse (defined as daily use), with a much greater time to relapse despite higher rates of concurrent non-opioid substance use. However the majority of participants discontinued treatment with XR-NTX at study completion, largely due to attitudes of "feeling cured" and "wanting to do it on my own" rather than external barriers such as cost or side effects.<bold>Conclusion: </bold>Patients who initiate treatment with XR-NTX might benefit from anticipatory guidance and motivational techniques to encourage long-term adherence as many will experience internal barriers to continuation. Our findings are reassuring that few patients experience side effects or adverse events complicating the effectiveness or safety of long-term use of XR-NTX.<bold>Scientific Significance: </bold>Among outpatients who successfully receive 3 monthly XR-NTX injections, many will prematurely discontinue treatment due to internal attitudes, such as "feeling cured." (Am J Addict 2017;26:319-325). [ABSTRACT FROM AUTHOR]
ISSN:10550496
DOI:10.1111/ajad.12527