Observational Study to Assess the Adequacy of Methadone Dosage, in Heroin Addicted Patients in a MMT.

Study Overview
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Brief Summary
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The purpose of the study ( observational and prospective ) is to evaluate the efficacy and tolerability of the methadone maintenance treatment in patients addicted to heroin. The efficacy and tolerability are assessed by correlating to the adequacy of the dosage of methadone. The patients will be observed for two years.

Detailed Description
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500 patients will be selected among all patients addicted to heroin according to DSM-IV_TR (Diagnostic and Statistical Manual of Mental Disorders IV_ text revision), in maintenance methadone treatment, observed in the involved sites. The investigators will use treatment schemes with methadon conform to clinical practice and according to SPC (Summary of Product Characteristics). The enrollment will be competitive. Patients that meet incl/excl and that sign the informed consent, will be observed for 2 years. Follow up visits will be performed according to routine procedures, for patients that belong regularly to site at 3/6/9/12/18/24 months post V1. During the visits, patients will be assessed by validated and used as clinical practice questionnaires . For the evaluations of tolerability and safety the laboratory tests and electrocardiograms routinely performed will be collected.

Official Title
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Studio Osservazionale Per Valutare l'Adeguatezza Del Dosaggio Del Metadone, Nelle Terapie di Mantenimento, in Rapporto Agli Obbiettivi di Outcome, in Pazienti Tossicodipendenti da Eroina. (METODO)

Conditions
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Heroin Addiction

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Both sexes Over 18 years of age Patients with a diagnosis of heroin addiction according to ICD-10 (International Classification of Diseases) Patients who have undertaken a methadone maintenance treatment Adhesion to observational study by signing informed consent. Exclusion Criteria: Inability to follow the observation Diagnosis of decompensated psychotic disorders

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| pts addicted to heroin in MMT<br>patients addicted to heroin who have undertaken methadone maintenance treatment | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| the efficacy of the methadone maintenance treatment in addicted heroin patients, evaluating the correlation among efficacy and adequate dosage in comparison to not adequate dosage. |  | 2 years ( 7 visits for patient ) | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| QT prolongation risk in patients addicted to heroin who have undertaken MMT |  | 2 years ( evaluation at t0, t0 +6/12/18/24 months) | 
| psychopathological status of observed patients in correlation with the adequate dosage in comparison to not adequate dosages |  | 2 years ( 7 visits for patient ) | 
| pharmacoeconomic condition correlated with the adequate dosage in comparison to not adequate dosage. |  | 2 years ( 7 visits for patient ) | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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methadone, heroin addiction, methadone maintenance treatment, adequate dosage of methadone