C/M ECT For Schizophrenia: New Study From Australia

Out on PubMed, from authors in Australia, is this paper:

Examining the clinical effectiveness of continuation and maintenance electroconvulsive therapy in schizophrenia.

George R, Krishnan V, Talbot D, Elhindi J, Mayur P, Harris A.Asian J Psychiatr. 2023 Dec 25;92:103895. doi: 10.1016/j.ajp.2023.103895. Online ahead of print.PMID: 38157717

The abstract is copied below:
Objective: There are few studies that examine the effectiveness of Continuation/Maintenance Electroconvulsive Therapy (C/M-ECT) in schizophrenia, despite the documented effectiveness of acute ECT treatment. We aimed to investigate the clinical effectiveness of C/M-ECT for in-patients with Schizophrenia in a naturalistic setting. We examined the medical records of 46 in-patients who were diagnosed with Schizophrenia and had received C/M-ECT belonging to non-acute extended care service in a public psychiatry hospital in Sydney, Australia. The focus of analysis was on 138 treatment cycles (71 acute only cycles and 67 acute-continuation/maintenance cycles) across 45 subjects. A linear mixed effects model was used to describe the change in clinical global impression-severity (CGI-S) over time 4 time points viz., pre-post acute and pre-post continuation/maintenance ECT.

Results: Acute-only cycles and acute-continuation/maintenance cycles had identical pre- (M = 5, C.I. = 4-6), post-cycle CGI-S scores, and identical CGI-S difference scores (M = 0, C.I. = -1 - 1). Broadly in each continuation/maintenance cycle, we observed an initial sharp decrease in CGI-S scores followed by a logarithmic increase in scores over time, with satisfactory CGI-S score maintenance observed for approximately 6 months. Bitemporal ECT influenced CGI-S across maintenance ECT (p < 0.05) indicating smaller declines in CGI-S scores over time.

Conclusion: In schizophrenia, C/M ECT preserves effects on illness severity for at least up to 6 months following an acute course of ECT. Bitemporal ECT vis a vis other electrode positions differentiated clinical severity over time.

Keywords: Bitemporal ECT; Continuation ECT; ECT; Maintenance ECT; Naturalistic; Schizophrenia.

The article is here.
And from the text:




This is a retrospective study of modest size, with lots of methodological limitations. But the bottom line of benefit of C/M ECT in a severely ill population with schizophrenia is a worthwhile contribution to the literature.

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