Ect.

The goal of this study is to investigate whether administering flumazenil to reverse the effects of benzodiazepines and/or zopiclone during electroconvulsive therapy (ECT) can help reduce cognitive side effects without diminishing treatment effectiveness in hospitalized patients with depression. The investigators hypothesize that blockade of the GABA receptor with flumazenil will reduce cognitive side effects through improved seizures and a reduced need for electrical charge escalation during the ECT series. Cognitive side effects will be measured by the total score on the Screening for Cognitive Impairment in Psychiatry (SCIP) (primary outcome) at follow-up after completion of the ECT series. Furthermore, it is expected that the flumazenil strategy will reduce pre-treatment anxiety and improve patient satisfaction (secondary outcomes). In addition, flumazenil strategy is hypothesized to have beneficial effects on subjective cognitive complaints, autobiographical memory, and executive functioning (secondary outcomes). Finally, the flumazenil strategy is expected to be associated with more favorable structural and functional changes in executive functioning and memory-related brain networks after completion of the ECT series, which may, in turn, be linked to better overall cognition and autobiographical memory (secondary outcome measures). For exploratory purposes, the study will also examine longitudinal changes in depressive symptoms and cognitive outcomes from baseline to follow-up (tertiary outcomes). Investigators will compare two different pre-ECT benzodiazepine management strategies: 1. Flumazenil strategy (experimental): continued benzodiazepine and/or zopiclone use up until the time of the ECT session, followed by administration of flumazenil immediately prior to ECT 2. Benzodiazepine withholding strategy (treatment as usual): discontinuation of benzodiazepines and/or zopiclone prior to the ECT in accordance with standard clinical practice

A randomized controlled trial will compare hippocampal neuroplasticity, antidepressant, and cognitive outcomes between individualized amplitude and fixed 800 mA amplitude ECT in older depressed subjects (n = 25 per group, n = 50 total). Relative to fixed 800 mA ECT: H1: Individualized amplitude arm will have improved RUL antidepressant outcome (IDS-C30 response rates and reduced BT electrode placement switch at V2). H2: Individualized amplitude arm will have improved cognitive outcomes (DKEFS-Verbal Fluency

The study design was a randomized, double blind, parallel controlled trial.The goal of this clinical trial is to learn if esketamine-assisted modified electroconvulsive therapy (ESK-MECT) works to treat severe depression in adolescents. It will also learn about the safety of ESK-MECT. The sample size was calculated based on the response rate of patients with depression undergoing electroconvulsive therapy(ECT).According to the results of the pilot study,the efficacy rate of subjects receiving adjunctive esketamine was approximately 78%,while the efficacy rate of those receiving only propofol was 63%.The expected superiority difference in remission rates between the two groups was 15%(one-sided)for the power calculation.Assuming a significance level of α=0.05 and a test power of β=0.2,with a 1:1 ratio of sample sizes between the two groups,the total sample size was calculated to be 198 using the PASS software(PASS 2023).Considering a dropout rate of 10%,a total of 220 subjects were required,with 110 subjects in each group. 1. experimental group The patients were given intravenous injection of 0.25 mg / kg esketamine, 1.5 mg / kg propofol and 1 mg / kg succinylcholine in turn. After anesthesia, the patients were given electroconvulsive therapy. 2. In the control group The patients were given normal saline consistent with esketamine injection volume, 1.5mg/kg of propofol and 1mg / kg of succinylcholine. After anesthesia, the patients were given electroconvulsive therapy. Efficacy evaluation 1. Main efficacy indicators Response rate of depressive symptoms after MECT treatment Response is defined as two consecutive HAMD-24 scores ≤ 50% before treatment after receiving MECT treatment. The response rate is calculated as the number of patients who achieved as response divided by the total number of patients receiving MECT.In this study, the 24-item version of HAMD was utilized. Participants will: Be randomly assigned to the esketamine group or the control group, and receive standard MECT treatment. Have seizure parameters, seizure duration, vital signs, and complications recorded. Complete psychiatric scale assessments, including HAMD-24, BSS, PANSS, WMS-RC and MoCA. Be assessed at the following time points: HAMD-24 and BSS after each treatment; PANSS after each treatment course;WMS-RC and MoCA before MECT and after one treatment course. All subjects did not discontinue antidepressants before modified electroconvulsive therapy(MECT),and they were fasting for 8 hours and no fluids for 2 hours.Three minutes before MECT,continuous qCON monitoring(Apollo-9000A,Chongqing Xideer Medical Equipment Co.,Ltd.,China)was initiated,while monitoring blood pressure,heart rate,and peripheral capillary oxygen saturation.Preoxygenation was administered for 3 minutes.The qCON monitor uses three electrodes on the forehead to collect raw electroencephalogram(EEG)signals.The qCON monitoring includes the qCON index,qNOX index,burst suppression(BS),and signal quality index(SQI).

Investigators will measure the variation of blood Metabolome through 1H NMR at several time points during the course of electroconvulsivetherapy in patients with a major depressive episode. Patients with a major depressive disorder or a bipolar disorder and a current major depressive episode will be included in this study. Investigators hypothesized that Metabolome could be a source to predict response during ECT and to help understanding underlying biological mechanisms.

The current anesthetic drug used as standard for ECT procedure at the Department of Psychiatry and Psychotherapy, Medical University of Vienna, is the barbiturate methohexital (Brevital®). As far as we know, methohexital is the most common anesthetic in the procedure of ECT. Only few heterogeneous randomized controlled trials to directly compare the use of (sole) ketamine and methohexital in ECT with relatively small sample sizes have been conducted so far, showing inconclusive findings: a retrospective comparison of methohexital and switch to ketamine anesthesia in 36 patients showed that ketamine prolonged seizure duration and accelerated posttreatment orientation. Others compared both drugs in terms of recovery and reorientation time showing that reorientation time was faster in the methohexital group (total N=9). Another study showed no difference in any outcome measure (depressive symptom improvement, cognition, adverse events) between both groups (total N=16, N=9 per group). Finally, a comparative investigation (total N=37, N=20 vs. N=17) detected no differences between both anesthetics but a higher systolic blood pressure posttreatment and longer motor seizure duration in the ketamine group. A favorable profile of ketamine in regards to seizure quality has been reported, however in terms of outcome measures methohexital and ketamine were similar (total N=50, N=23 vs. N=27). The present study is designed as a prospective randomized non-inferiority trial comparing esketamine plus propofol (ratio 1:1, for better readability from now on referred to as "ketofol") to methohexital, the latter being the current standard anesthetic applied for ECT procedure at our department. Patients eligible for ECT will be randomly assigned to receive anesthesia with either ketofol or methohexital for the whole course of the individual ECT series. Group differences will be investigated both in regards to outcomes related to anesthesia, treatment-outcome and seizure quality. Further, changes in cardiac enzyme levels before and after ECT-treatment and during the entire ECT series will be evaluated and possible group differences will be explored. As stated above the sole/adjunct administration of ketamine as anesthetic agent for ECT has been associated with better seizure quality, similar antidepressant outcomes and anesthesia-associated events, while there is some evidence suggesting that the use of ketamine might present some advantages to other anesthetics in terms of cognitive side-effects accompanying ECT. Therefore, the aim of the present study will be to establish ketofol as a new standard for anesthesia at our Department.