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  • Title: Benzodiazepine tapering: a prospective study.
    Author: Vikander B, Koechling UM, Borg S, Tönne U, Hiltunen AJ.
    Journal: Nord J Psychiatry; 2010 Aug; 64(4):273-82. PubMed ID: 20629611.
    Abstract:
    BACKGROUND: Benzodiazepines (BZD) are the most widely used sedative-hypnotics, and evidence is rapidly accumulating suggesting potential BZD dependence, association of chronic use with adverse effects and a definite abstinence syndrome produced by withdrawal. AIMS: The present investigation followed prospectively long-term BZD users over 1 year following graded BZD withdrawal in terms of clinical and withdrawal symptoms. METHODS: Clinical symptoms were measured by the Comprehensive Psychopathological Rating Scale (CPRS) and by the Newcastle Anxiety and Depression Diagnostic Index (NADDI) in a sample of BZD users over a 50-week period following graded BZD withdrawal. RESULTS: The results showed that the frequency and severity of clinical symptomatology measured by both scales significantly decreased over time. A detailed analysis of possible patterns of symptoms on both scales revealed four patterns: 1) a gradual decrease over the 50-week time period; 2) an increase in the severity of symptoms at the onset of tapering and a decrease in severity post-tapering; 3) an increase in the severity of symptoms 4 weeks after the cessation of BZD tapering; and 4) no change over the 50-week time period. Rate of BZD withdrawal was associated with CPRS ratings of global illness at admission and at end of treatment, but was not associated with duration or dosage of BZDs, type of BZD, prescriptive and/or non-prescriptive drug use prior to admission, marital status, sex or age. CONCLUSIONS: The results of the present study provide a detailed picture of the pattern of symptoms, their time course and multidimensional determinants of the BZD withdrawal symptoms.
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