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Published on: February 14, 2014
The effects of ECT on cognitive functioning in the elderly: a review
Caroline E M Tielkes1, Hannie C Comijs, Esmée Verwijk
1Department of Psychiatry, VU University Medical Center, Stichting Buitenamstel Geestgronden, Amsterdam, The Netherlands.
International Journal of Geriatric Psychiatry
|March 4, 2008
Summary
Electroconvulsive therapy (ECT) can be effective for depression in older adults, but its impact on cognition varies. Some studies show memory and learning impairments, while others indicate improvements in cognitive function, especially in those with pre-existing impairment.
Area of Science:
- Geriatric Psychiatry
- Neuroscience
- Cognitive Psychology
Background:
- Electroconvulsive therapy (ECT) is a recognized treatment for depression in elderly individuals.
- Concerns exist regarding potential adverse cognitive effects associated with ECT, including maintenance ECT (M-ECT).
Purpose of the Study:
- To systematically review studies published between 1980 and 2006 examining the effects of ECT on cognitive function in elderly populations (minimum age 55).
- To assess cognitive changes before and after ECT using valid measurement tools.
Main Methods:
- Literature search for studies on ECT and cognition in the elderly (minimum age 55) from 1980-2006.
- Inclusion criteria required valid pre- and post-ECT cognitive assessments.
- Analysis focused on 15 eligible studies, with nine exclusively on the elderly.
Main Results:
- Conflicting findings were reported: three studies noted verbal learning and recall deficits post-ECT.
- Three studies reported positive cognitive effects, including memory, processing speed, and concentration.
- Global cognitive functioning improved in all studies of patients with cognitive impairment; M-ECT showed mixed results on specific functions versus global cognition.
Conclusions:
- Research on ECT's cognitive impact in the elderly is limited and yields conflicting results.
- Methodological limitations such as small sample sizes, lack of controls, and short follow-up periods contribute to inconsistent findings.
- Further extensive research is crucial to understand and manage cognitive effects of ECT in elderly patients.
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