Aim: To describe anesthetic depth using spectal edge frequency (SEF) and density spectral array (DSA) and its relation to treatment effect of electroconvulsive therapy (ECT). Study design: Observational study Primary outcomes: SEF, DSA and treatment effect of ECT. Method: SEF and DSA si measured using a commercially available monitor for depth of anesthesia. Treatment effect of ECT will be evaluated using hemodynamic, electroencephalographic and clinical variables.
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Change in spectral edge frequency
Timeframe: Monitored before, during and after ECT. Total monitoring time is apporximately 30 minutes per patient.
Change in density spectral array
Timeframe: Monitored before, during and after ECT. Total monitoring time is approximately 30 minutes per patient.
Duration of convulsive activity
Timeframe: Monitored immediately after administration of ECT.
Postictal supression
Timeframe: Monitored immediately after administration of ECT.
Need for restimulation
Timeframe: Monitored immediately after administration of ECT.
Change in heart rate.
Timeframe: Monitored immediately after administration of ECT.