Abstract

IntroductionThe treatment of depressive phases of bipolar disorder is challenging. Electroconvulsive therapy (ECT) is generally considered to be the most effective treatment even if there are no randomized controlled trials (RCT) of ECT in bipolar depression. The safety of ECT is well documented, but there are some controversies as to the cognitive side effects.ObjectivesTo compare the effects and side effects of ECT with pharmacological treatment in treatment resistant bipolar depression. Cognitive changes during the treatment will be measured, as well as quality of life.MethodA prospective, randomised controlled multi-centre trial. 6- week acute treatment trial with 7 clinical assessments. Follow up visit at 26 weeks or until remission (max 52 weeks). A neuropsychological test battery designed to be sensitive to changes in cognitive function will be used.SettingNine study centres across Norway, all acute psychiatric wardsSample132 patients aged 18 and over, who fulfil criteria for treatment resistant depression in bipolar disorder, MADRS score of at least 25 at baselineInterventionIntervention group: 3 sessions per week for up to 6 weeks, total up to 18 sessions. Control group: algorithm-based pharmacological treatment as usual.ResultsSix departments have included 43 patients since start in May 2008.ConclusionThis study is the first randomized controlled trial that aims to investigate whether ECT is better than pharmacological treatment as usual in treatment resistant bipolar depression. Possible long lasting cognitive side effects will be evaluated. The study is investigator initiated, without support from industry.

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