Lorazepam-Induced Toxicity in the Aged

NCT ID: NCT00044642

Last Updated: 2013-12-06

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE4

Total Enrollment

90 participants

Study Classification

INTERVENTIONAL

Study Start Date

2000-12-31

Study Completion Date

2007-07-31

Brief Summary

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This study will compare the effects of an acute dose of lorazepam to a placebo in elderly patients with generalized anxiety disorder (GAD).

Detailed Description

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GAD is among the most common anxiety disorders in the elderly population. The drug lorazepam is widely utilized in the treatment of elderly individuals with GAD. However, single doses of lorazepam have been associated with cognitive toxicity that is typically evident between 1 and 2.5 hours after the drug is administered. The toxic effects include decreased memory and increased swaying, which has been associated with greater risk for falls.

Patients have 4 study visits. A psychiatric evaluation and a memory test are given at the first visit. During the second study visit, patients have a physical exam, an electrocardiogram (ECG), a neuropsychological assessment, an optional magnetic resonance imaging (MRI) brain scan, and other laboratory tests. On the third and fourth visits, patients are randomized to receive either their highest daily dose of lorazepam or placebo. Performance effects and postural sway are determined before drug administration and at 1, 2.5, and 5 hours after the drug is given. Blood samples for the determination of drug levels are also obtained.

Conditions

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Anxiety Disorders Generalized Anxiety Disorder

Keywords

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Anxiety

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

DOUBLE

Interventions

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Lorazepam

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Lorazepam treatment for at least 3 months
* Cognitively intact

Note: Individuals who are unable or unwilling to have an MRI may be included

Exclusion Criteria

* Major psychiatric disorder other than GAD
* Significant medical illness which may increase the likelihood of adverse reactions to lorazepam
* Severe loss of hearing or vision
* Current or past history of alcohol dependence
* Substance abuse within the past 6 months
* MRI evidence of infection, infarction, or other lesions suggestive of intervening neurological disease
* Clinical symptoms that suggest neurological disease
* Dementia or other mental syndromes or disorders
Minimum Eligible Age

60 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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National Institute of Mental Health (NIMH)

NIH

Sponsor Role collaborator

Nathan Kline Institute for Psychiatric Research

OTHER

Sponsor Role lead

Principal Investigators

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Nunzio Pomara, MD

Role: PRINCIPAL_INVESTIGATOR

Nathan S. Kline Institute and New York University School of Medicine

Locations

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NYU/Bellevue General Clinical Research Center (8East)

New York, New York, United States

Site Status

Nathan S. Kline Institute

Orangeburg, New York, United States

Site Status

Countries

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United States

Other Identifiers

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R01MH059142

Identifier Type: NIH

Identifier Source: secondary_id

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DATR A4-GPX

Identifier Type: -

Identifier Source: secondary_id

R01MH059142

Identifier Type: NIH

Identifier Source: org_study_id

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