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Association between electroconvulsive therapy and time to readmission after a manic episode
Örebro University, School of Medical Sciences. University Health Care Research Centre, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.ORCID iD: 0000-0002-6883-9377
Örebro University, School of Medical Sciences. Örebro University Hospital. University Health Care Research Centre.ORCID iD: 0000-0002-9035-0287
Örebro University, School of Medical Sciences. University Health Care Research Centre, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.ORCID iD: 0000-0002-3587-6075
Örebro University, School of Medical Sciences. University Health Care Research Centre, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.ORCID iD: 0000-0002-3649-2639
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2024 (English)In: Acta Psychiatrica Scandinavica, ISSN 0001-690X, E-ISSN 1600-0447, Vol. 150, no 1, p. 22-34Article in journal (Refereed) Published
Abstract [en]

OBJECTIVE: The majority of patients hospitalized for treatment of a manic episode are readmitted within 2 years despite maintenance treatment. Electroconvulsive therapy (ECT) has been associated with lower rehospitalization rates in some psychiatric conditions, but its association with readmission after a manic episode has not been investigated. Therefore, the aim of this study was to determine whether the time to readmission in patients with mania treated with ECT was longer than in patients not treated with ECT and whether there were subgroups of patients that benefited more.

METHODS: This was a nationwide register-based, observational study. All patients diagnosed with bipolar disorder, manic episode, admitted to any hospital in Sweden between 2012 and 2021 were included. Patients contributed data to the study for every admission. All admissions were followed up until psychiatric readmission, death, or the end of the study (December 31, 2021). Association between ECT and time to readmission was analyzed. A paired samples model was performed for 377 patients with at least two admissions for mania, treated with ECT at one admission and without ECT at the other admission. Times to readmission were analyzed.

RESULTS: A total of 12,337 admissions were included; mean (SD) age 47.7 (17.2), 5443 (44.1%) men. Readmission rate within 1 year was 54.6%. ECT was administered in 902 (7.3%) admissions. Within 30 days after admission, 182 out of 894 (20.4%) patients treated with ECT versus 2105 out of 11,305 (18.6%) patients treated without ECT were readmitted. There was no association between ECT and time to readmission (aHR 1.00, 95% CI 0.86-1.16, p = 0.992) in the model with all admissions. The paired samples model included 754 admissions (377 patients), mean (SD) age during admission without ECT was 45.6 (16.5), and with ECT 46.6 (16.4), 147 (39.0%) were men. In that model, readmission rate within 30 days for treatment with ECT was 19.0%, and for treatments without ECT, 24.1% (aHR 0.75, 95% CI 0.55-1.02, p = 0.067).

CONCLUSION: Readmission rates after inpatient treatment of mania were high. ECT was not significantly associated with longer time to readmission, but there was a trend toward a protective effect of ECT when admissions with and without ECT were compared within the same patients.

Place, publisher, year, edition, pages
John Wiley & Sons, 2024. Vol. 150, no 1, p. 22-34
Keywords [en]
Bipolar disorder, electroconvulsive therapy, mania, readmission, rehospitalization
National Category
Psychiatry
Identifiers
URN: urn:nbn:se:oru:diva-113093DOI: 10.1111/acps.13689ISI: 001199821200001PubMedID: 38604233Scopus ID: 2-s2.0-85190443565OAI: oai:DiVA.org:oru-113093DiVA, id: diva2:1851016
Funder
Region Örebro County, OLL-972634NyckelfondenSwedish Research Council, 2022-01643The Swedish Brain Foundation, FO2022-0217Available from: 2024-04-12 Created: 2024-04-12 Last updated: 2024-06-05Bibliographically approved

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Popiolek, KatarzynaArnison, TorBejerot, SusanneFall, KatjaNordenskjöld, Axel

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