title: Enlargement of cerebrospinal fluid spaces in long-term benzodiazepine abusers.
abstract: In 17 benzodiazepine (BDZ) dependent in-patients a CT scan was performed before initiation of withdrawal therapy. The evaluation of the ventricular to brain ratio (VBR) by standardized and computerized measurements revealed significantly higher mean VBRs for both high- and low-dose BDZ-dependent patients compared to the mean VBR of an age- and sex-matched control group. In addition, the mean VBR of high-dose BDZ-dependent patients (N = 8) was significantly higher than the mean VBR of low-dose BDZ-dependent patients (N = 9). This difference could not be accounted for by the age of the patients or duration of BDZ-dependency and, therefore, suggests a dose-dependent effect of BDZs on the enlargement of internal CSF-spaces. On the other hand, higher values for the width of external CSF-spaces were found to be related to increasing age of the patients and duration of BDZ-dependency.
mesh_terms: D000328:Adult; D014151:Anti-Anxiety Agents / Q000009:adverse effects*; D001569:Benzodiazepines; D001921:Brain / Q000473:pathology; D002552:Cerebral Ventricles / Q000187:drug effects* / Q000473:pathology; D004305:Dose-Response Relationship, Drug; D005260:Female; D006801:Humans; D008297:Male; D013375:Substance Withdrawal Syndrome / Q000473:pathology*; D019966:Substance-Related Disorders / Q000473:pathology*; D014057:Tomography, X-Ray Computed
chemical_list: D014151:Anti-Anxiety Agents; D001569:Benzodiazepines