[Opioid use disorder in patients with chronic non-cancer pain].

Epidemiology Canada now has the second highest number of opioid prescriptions per capita in the world. The rate of prescriptions has increased over the last decade, most notably in adults over 55 years of age. A recognition of the importance of treating pain has influenced this increase, but higher rates of opioid prescribing have produced undesirable outcomes including the misuse of medication as well as an increased number of deaths and emergency department visits attributable to opioids.

Psychological predictors of retention in a low-threshold methadone maintenance treatment for opioid addicts: a 1-year follow-up study.

This study investigated the role of psychological variables and judicial problems in treatment retention for a low-threshold methadone program in Montreal, Canada. Logistic regression analyses were computed to examine associations between psychological variables (psychological distress, self-esteem, stages of change), criminal justice involvement, and treatment retention for 106 highly-disorganized opioid users. Higher methadone dosage was associated with increased odds of treatment retention, whereas criminal charges and lower self-esteem decreased these odds.

Diacetylmorphine versus methadone for the treatment of opioid addiction.

Background: Studies in Europe have suggested that injectable diacetylmorphine, the active ingredient in heroin, can be an effective adjunctive treatment for chronic, relapsing opioid dependence.

Methods: In an open-label, phase 3, randomized, controlled trial in Canada, we compared injectable diacetylmorphine with oral methadone maintenance therapy in patients with opioid dependence that was refractory to treatment. Long-term users of injectable heroin who had not benefited from at least two previous attempts at treatment for addiction (including at least one methadone treatment) were randomly assigned to receive methadone (111 patients) or diacetylmorphine (115 patients).

[Treatment retention and evolution of clientele in a low threshold methadone substitution treatment program in Montreal].

Objectives: To evaluate client treatment retention and evolution in terms of living conditions, at-risk behaviours, and the use of psychoactive substances (PAS) over a one-year period, following admission into a low-threshold methadone program in Montreal.

Method: Individual interviews were administered to 114 clients from Relais-Méthadone (RM) at admission and one year after treatment initiation. Participants reported on PAS consumption and unsafe practices of drug use and sexual behaviours at high risk for transmission of HIV, sexually transmitted infections (STI) and other blood-borne viruses (BBV).

[Accessibility to methadone substitution treatment: the role of a low-threshold program].

: To evaluate the accessibility to a Montreal low-threshold methadone program (Relais- Méthadone). This program is aimed at a marginalized population of heroin addicts who are injection drug users (IDU). : The data (n=141 clients) were collected during the first year of the program implementation with questionnaires administered by the programme workers.

Pain of first-trimester abortion: a study of psychosocial and medical predictors.

Pain during first-trimester abortion by suction-curettage under local anesthesia alone was measured with the McGill Pain Questionnaire (MPQ), and verbal and visual analogue scales in 109 women. The average intensity of abortion pain ranked among moderately intense pain recorded with the MPQ. However, the pain scores had a wide range and appeared influenced by several demographic, psychosocial and medical variables.