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Subjective Memory Immediately Following Electroconvulsive Therapy
Clinical Epidemiology and Biostatistics, School of Medical Sciences, Örebro University, Örebro, Sweden.
Center for Social and Affective Neuroscience, Department of Clinical and Experimental Medicine, Faculty of Health Sciences, Linköping University, Linköping, Sweden; Department of Psychiatry, Region Östergötland, Linköping, Sweden.
Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.
Örebro University, School of Medical Sciences. Unit of Biostatistics, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.ORCID iD: 0000-0002-3552-9153
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2016 (English)In: Journal of ECT, ISSN 1095-0680, E-ISSN 1533-4112Article in journal (Refereed) Epub ahead of print
Abstract [en]

Objectives: The aims of the present study were to describe the short-term rate of subjective memory worsening (SMW) and identify factors of importance for SMW in a large clinical sample treated for depression with electroconvulsive therapy (ECT).

Methods: This register-based study included 1212 patients from the Swedish National Quality Register for ECT. Subjective memory worsening was defined as a 2-point worsening on the memory item of the Comprehensive Psychopathological Rating Scale from before to within 1 week after treatment. Associations between patient characteristics and treatment factors were examined using logistic regression.

Results: Subjective memory worsening was experienced in 26%. It was more common in women than in men (31% vs 18%; P < 0.001) and more common in patients aged 18 to 39 years than in patients 65 years or older (32% vs 22%; P = 0.008). Patients with less subjective memory disturbances before ECT had a greater risk of SMW. Patients in remission after ECT had a lower risk of SMW. A brief pulse width stimulus gave higher risk of SMW compared with ultrabrief pulse (odds ratio, 1.61; 95% confidence interval, 1.05-2.47).

Conclusions: Subjective memory worsening is reported by a minority of patients. However, young women are at risk of experiencing SMW. Ultrabrief pulse width stimulus could be considered for patients treated with unilateral electrode placement who experience SMW. Each patient should be monitored with regard to symptoms and adverse effects, and treatment should be adjusted on an individual basis to maximize the clinical effect and with efforts to minimize the cognitive adverse effects.This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal.

Place, publisher, year, edition, pages
Philadelphia, USA: Lippincott Williams & Wilkins, 2016.
Keyword [en]
Amnesia, electroconvulsive therapy, memory
National Category
Psychiatry
Identifiers
URN: urn:nbn:se:oru:diva-53877DOI: 10.1097/YCT.0000000000000377PubMedID: 27930429OAI: oai:DiVA.org:oru-53877DiVA: diva2:1055868
Available from: 2016-12-13 Created: 2016-12-12 Last updated: 2016-12-13Bibliographically approved

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Cao, YangNordenskjöld, Axel
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