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Peripheral electrical stimulation in Alzheimer's disease
Koene R A van Dijk1, Philip Scheltens, Marijn W Luijpen
1Department of Clinical Neuropsychology, Vrije Universiteit, Amsterdam, The Netherlands. kra.van.dijk@psy.vu.nl
Dementia and Geriatric Cognitive Disorders
|April 2, 2005
Summary
Peripheral electrical nerve stimulation did not improve cognition or behavior in Alzheimer's disease (AD) patients living at home. While well-tolerated, this intervention may not be a viable symptomatic treatment for AD.
Area of Science:
- Neurology
- Gerontology
- Clinical Trials
Background:
- Peripheral electrical nerve stimulation (PENS) has shown promise in nursing home-based Alzheimer's disease (AD) studies.
- Previous research indicated improvements in memory, behavior, and physiological rhythms with PENS in AD patients.
Purpose of the Study:
- To investigate the efficacy of PENS on cognitive and behavioral outcomes in home-dwelling AD patients.
- To assess the feasibility and patient/caregiver acceptance of home-based PENS for Alzheimer's disease.
Main Methods:
- A randomized, placebo-controlled, parallel-group clinical trial was conducted.
- Participants included Alzheimer's disease patients living at home, randomized to receive either verum or placebo PENS.
- Cognitive and behavioral measures were assessed using repeated measures analyses of variance.
Main Results:
- No statistically significant differences were found between the verum and placebo groups in cognitive or behavioral outcomes.
- The majority of patients and caregivers reported positive evaluations of the treatment procedure.
- Home-based application of daily PENS was associated with minimal patient burden.
Conclusions:
- Electrical stimulation, as applied in this study, did not demonstrate symptomatic treatment effects for cognition or behavior in home-dwelling AD patients.
- The positive patient and caregiver feedback suggests potential for adherence, but the lack of efficacy warrants re-evaluation of PENS for AD.