PubMed Health⌕ Search

PubMed · 11778141

Death attributed to methadone.

Abstract

Besides its other effects, MMT (methadone maintenance treatment) reduces the high mortality of intravenous heroin addicts to about 30% of controls. On the other hand, deaths of patients and non-patients have been attributed to methadone. Here, we will report on the major reasons for deaths attributed to methadone and discuss suggestions for their prevention. 69% of deaths attributed to methadone occurred in subjects not on MMT at the time of their death. 51% of deaths attributed to methadone in subjects in MMT occurred during the dose-finding period of MMT. Further apparent risk situations are methadone intake in addition to that received for MMT, discharge from prison and intravenous injection of methadone. Intake of methadone in non-patients is almost entirely due to abuse of diverted take-home methadone. Not giving methadone as take-home should reduce methadone deaths most effectively. Replacing take-home methadone by substances acting longer than one day, such as LAAM (levacetylmethadol) or buprenorphine, should also be effective. Restriction of take-home prescriptions to substances with a slow onset of action, such as LAAM, or to partial agonists with an extended safety margin such as buprenorphine should be partly effective. Meticulous evaluation of substance history, slow dose increases and strict supervision of the patient by experienced personal should prevent methadone overdose during the dose-finding period. Discharge from prison closely corresponds to this situation; informing addicts shortly before discharge and psychosocial help during the first months out of prison may reduce this risk. Naloxone as an adjunct to oral agonist preparations should effectively prevent high-risk intravenous injection, for example of methadone syrup. This has been the case with tilidine plus naloxone in Germany. Reducing deaths attributable to methadone increases the net benefit of MMT. Also, reducing deaths attributable to methadone avoids decreases in the public acceptance of MMT.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

S V Vormfelde, W Poser. 2001. Death attributed to methadone.. https://doi.org/10.1055/s-2001-18032

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

Sex differences in the potency of kappa opioids and mixed-action opioids administered systemically and at the site of inflammation against capsaicin-induced hyperalgesia in rats.

RATIONALE: Sex differences in the potency of the antinociceptive effects of kappa opioids have been reported in various acute pain models with evidence suggesting that these sex differences are mediated by activity in the N-methyl-D: -aspartate (NMDA) system. OBJECTIVES: The purpose of the present study was to evaluate sex differences in the antihyperalgesic actions of selected kappa and mixed-action opioids in a persistent pain model and determine if the NMDA system modulates these effects in a sexually dimorphic manner. METHODS: Using gonadally intact male and female F344 rats, hyperalgesia was induced by local administration of capsaicin in the tail, after which the tail was immersed in a mildly noxious thermal stimulus (45 degrees C water), and tail-withdrawal latency measured. Opioids were then administered systemically (s.c.) and locally (in the tail) alone, and in selected combinations with the noncompetitive NMDA antagonist dextromethorphan. RESULTS: When administered systemically and locally, the kappa opioids spiradoline, U69,593 and U50,488, and the mixed-action opioids butorphanol and nalbuphine, produced dose-dependent antihyperalgesic effects. Whereas the kappa opioids were generally more potent in males, sex differences were not observed with the mixed-action opioids. Peripheral receptor activity was confirmed for local administration of kappa opioids by the antagonism observed after local, but not intracerebroventricular (i.c.v.), administration of the kappa antagonist nor-binaltorphamine (nor-BNI). Dextromethorphan was equally potent in attenuating the antihyperalgesia induced by kappa opioids in both males and females. CONCLUSIONS: These findings demonstrate sex differences in kappa opioid activity in a persistent pain model. Although an NMDA antagonist blocked the effects of kappa opioids in this model, these effects were not sexually dimorphic as reported in most acute pain models.

Analgesics, Opioid↗

Systematic review: opioid treatment for chronic back pain: prevalence, efficacy, and association with addiction.

BACKGROUND: The prevalence, efficacy, and risk for addiction for persons receiving opioids for chronic back pain are unclear. PURPOSE: To determine the prevalence of opioid treatment, whether opioid medications are effective, and the prevalence of substance use disorders among patients receiving opioid medications for chronic back pain. DATA SOURCES: English-language studies from MEDLINE (1966-March 2005), EMBASE (1966-March 2005), Cochrane Central Register of Controlled Clinical Trials (to 4th quarter 2004), PsychInfo (1966-March 2005), and retrieved references. STUDY SELECTION: Articles that studied an adult, nonobstetric sample; used oral, topical, or transdermal opioids; and focused on treatment for chronic back pain. DATA EXTRACTION: Two investigators independently extracted data and determined study quality. DATA SYNTHESIS: Opioid prescribing varied by treatment setting (range, 3% to 66%). Meta-analysis of the 4 studies assessing the efficacy of opioids compared with placebo or a nonopioid control did not show reduced pain with opioids (g, -0.199 composite standardized mean difference [95% CI, -0.49 to 0.11]; P = 0.136). Meta-analysis of the 5 studies directly comparing the efficacy of different opioids demonstrated a nonsignificant reduction in pain from baseline (g, -0.93 composite standardized mean difference [CI, -1.89 to -0.03]; P = 0.055). The prevalence of lifetime substance use disorders ranged from 36% to 56%, and the estimates of the prevalence of current substance use disorders were as high as 43%. Aberrant medication-taking behaviors ranged from 5% to 24%. LIMITATIONS: Retrieval and publication biases and poor study quality. No trial evaluating the efficacy of opioids was longer than 16 weeks. CONCLUSIONS: Opioids are commonly prescribed for chronic back pain and may be efficacious for short-term pain relief. Long-term efficacy (> or =16 weeks) is unclear. Substance use disorders are common in patients taking opioids for back pain, and aberrant medication-taking behaviors occur in up to 24% of cases.

Analgesics, Opioid↗