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Related Experiment Videos

Does neuroanatomy predict ECT response?

J R Dequardo1, O Tomori, J A Brunberg

  • 1University of Michigan ECT Program, Department of Psychiatry, Ann Arbor, USA. johndeq@umich.edu

Progress in Neuro-Psychopharmacology & Biological Psychiatry
|February 14, 1998
PubMed
Summary
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Structural brain abnormalities, like third ventricle enlargement, did not correlate with initial depression severity. However, larger third ventricle-brain ratios (3VBR) in patients undergoing ECT correlated with needing more treatments for depression.

Area of Science:

  • Neuroscience
  • Psychiatry
  • Radiology

Background:

  • Structural neuropathologic abnormalities are linked to severe psychiatric disorders.
  • Ventricular enlargement in schizophrenia correlates with symptom severity and treatment response.
  • The relationship between brain pathology, ventricle size, symptom severity, and treatment response in severe depression is unclear.

Purpose of the Study:

  • To investigate the relationship between central nervous system (CNS) structural pathology, symptom severity, and electroconvulsive therapy (ECT) response in patients with depression.
  • To test the hypothesis that greater neuroanatomic abnormalities correlate with greater initial symptom severity and poorer ECT response.

Main Methods:

  • Studied 57 patients with unipolar or bipolar depression undergoing ECT.

Related Experiment Videos

  • Quantified symptom severity using the Hamilton Depression Rating Scale (HRSD) at baseline and post-ECT.
  • Measured lateral and third ventricle-brain ratios (LVBR, 3VBR) from CT scans and rated cortical atrophy.

    • Main Results:

    • Structural pathology was not associated with baseline symptom severity, contrary to the hypothesis.
    • A larger third ventricle-brain ratio (3VBR) correlated with the number of ECT treatments required for benefit.
    • CT variables did not correlate with total post-treatment HRSD scores or HRSD score changes.

    Conclusions:

    • Third ventricle enlargement may indicate generalized or brainstem pathology impacting ECT efficacy.
    • Enlarged third ventricles might necessitate more ECT treatments due to altered seizure efficacy or neurochemical response.
    • Ventricle size did not significantly impact overall treatment response, only the number of treatments needed.