Facial reconstruction

Search LJMU Research Online

Browse Repository | Browse E-Theses

Adverse performance effects of acute lorazepam administration in elderly long-term users: pharmacokinetic and clinical predictors.

Pomara, N and Lee, SH and Bruno, D and Silber, T and Greenblatt, DJ and Petkova, E and Sidtis, JJ (2015) Adverse performance effects of acute lorazepam administration in elderly long-term users: pharmacokinetic and clinical predictors. Progress in Neuropsychopharmacology and Biological Psychiatry, 56. pp. 129-135. ISSN 1878-4216

[img] Text
Pomara et al Lorazepam.pdf - Accepted Version
Available under License Creative Commons Attribution Non-commercial No Derivatives.

Download (116kB)

Abstract

BACKGROUND: The benzodiazepine lorazepam is widely utilized in the treatment of elderly individuals with anxiety disorders and related conditions. Negative effects of acute lorazepam administration on cognitive performance, especially memory, have been reported in both previously untreated elderly and in individuals who have received short term (up to three weeks) treatment with therapeutic doses. However, it remains unclear if these adverse cognitive effects also persist after long-term use, which is frequently found in clinical practice. METHODS: Cognitively intact elderly individuals (n=37) on long-term (at least three months) daily treatment with lorazepam were studied using a double-blind placebo-controlled cross-over study design. Subjects were administered their highest daily unit dose of lorazepam (0.25-3.00 mg) or placebo on different days, approximately 1 week apart in a random order, and were assessed on memory, psychomotor speed, and subjective mood states. RESULTS: Subjects had significantly poorer recall and slowed psychomotor performance following acute lorazepam administration. There were no significant effects on self-ratings of mood, sedation, or anxiety in the whole group, but secondary analyses suggested a differential response in subjects with Generalized Anxiety Disorder. CONCLUSIONS: The reduced recall and psychomotor slowing that we observed, along with an absence of significant therapeutic benefits, following acute lorazepam administration in elderly long-term users reinforces the importance of cognitive toxicity as a clinical factor in benzodiazepine use, especially in this population.

Item Type: Article
Uncontrolled Keywords: 11 Medical And Health Sciences, 17 Psychology And Cognitive Sciences
Subjects: R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
R Medicine > RM Therapeutics. Pharmacology
Divisions: Natural Sciences and Psychology
Publisher: Elsevier
Related URLs:
Date Deposited: 09 Feb 2016 15:50
Last Modified: 09 Feb 2016 15:50
DOI or Identification number: 10.1016/j.pnpbp.2014.08.014
URI: http://researchonline.ljmu.ac.uk/id/eprint/2890

Actions (login required)

View Item View Item