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Electroconvulsive therapy increases brain volume in major depression: a systematic review and meta-analysis

Publikation: Bidrag til tidsskriftReviewForskningpeer review

DOI

  1. Det Danske ECT/MRI projekt

    Projekt: Typer af projekter

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OBJECTIVE: The main purpose of this review was to synthesise evidence on ECT's effects on brain's structure.

METHOD: A systematic literature review of longitudinal studies of depressed patients treated with ECT using magnetic resonance imaging (MRI) and meta-analysis of ECT's effect on hippocampal volume.

RESULTS: Thirty-two studies with 467 patients and 285 controls were included. The MRI studies did not find any evidence of ECT-related brain damage. All but one of the newer MRI volumetric studies found ECT-induced volume increases in certain brain areas, most consistently in hippocampus. Meta-analysis of effect of ECT on hippocampal volume yielded pooled effect size: g = 0.39 (95% CI = 0.18-0.61) for the right hippocampus and g = 0.31 (95% CI = 0.09-0.53) for the left. The DTI studies point to an ECT-induced increase in the integrity of white matter pathways in the frontal and temporal lobes. The results of correlations between volume increases and treatment efficacy were inconsistent.

CONCLUSION: The MRI studies do not support the hypothesis that ECT causes brain damage; on the contrary, the treatment induces volume increases in fronto-limbic areas. Further studies should explore the relationship between these increases and treatment effect and cognitive side effects.

OriginalsprogEngelsk
TidsskriftActa Psychiatrica Scandinavica
Vol/bind138
Udgave nummer3
Sider (fra-til)180-195
Antal sider16
ISSN0001-690X
DOI
StatusUdgivet - sep. 2018

ID: 55616530