Description Module
The Description Module contains narrative descriptions of the clinical trial, including a brief summary and detailed description. These descriptions provide important information about the study's purpose, methodology, and key details in language accessible to both researchers and the general public.
Description Module path is as follows:
Study -> Protocol Section -> Description Module
Description Module
Ignite Creation Date:
2025-12-25 @ 1:08 AM
Ignite Modification Date:
2025-12-25 @ 1:08 AM
NCT ID:
NCT04171193
Brief Summary:
In this study the investigators will submit patients with treatment resistant depression to deep anesthesia with isoflurane to get 15 minutes of cortical burst suppression on electroencephalogram, once a week for six weeks. The follow up will be for 6 months. The aim is to evaluate the change in depression severity during the entire period.
Detailed Description:
This study protocol will measure the efficacy of deep anesthesia, until burst suppression rate of 80% or more measured with Bi-spectral Index (BIS), with the volatile anesthetic Isoflurane. The investigators will select 30 subjects. The participants will be separated into 2 arms of 15 individuals. One arm called ISOAD will keep the oral treatment with antidepressants. The second arm, called ISO, will do a washout of any oral medications for depression. Both groups will go under six sessions, once per week, of deep anesthesia and will be followed up for 6 months to evaluate the survival of the antidepressant effect, if any effect happens. Before the anesthesia occurs, blood samples will be drawn to measure Brain-derived neurotrophic factor and investigators will apply depression rating scales such as MADRS and Hamilton - 17 , Young mania Scale, UKU scale for side effects, electroencephalogram will be recorder to be compared with the data shown on BIS. All the anesthesia procedure will be done with induction with propofol, fentanyl and muscular relaxant, to facilitate the tracheal intubation and compliance with the mechanical ventilator,based on body weight in standard dosages. Isoflurane will be set to 2,4% ( 2 cam) until Burst suppression rate \>80% is achieve. Then the anesthesia will be maintained for 15 minutes, then the flow of anesthetic gas will be ended and the patient will be allowed to awake and discharged home when the anesthesiologist decide based on Aldrete Kroulik scale. After the 6th session the participant will return in one week to final evaluation. All the patients that shows improvement in depression scores will enter the phase 2 with one visit every 15 days for 2 months and then once a month until the 6th month. The non responders of the ISO group will start oral antidepressant sertraline to evaluate any potentialization effect of the intervention and be allocated in ISOPOT group. Those from ISOAD group (Isoflurane plus oral antidepressants) that did not respond to the intervention will be discontinued from the study and their data used in the study as non-responders. Those from ISOPOT group that did not improve their depression scores after 4 weeks will be discontinued from the study and the data computed as non-responders.
Study:
NCT04171193
Study Brief:
Protocol Section:
NCT04171193