The goal of this observational study is to determine the relationship between brain activity patterns and recovery time in adult patients (ages 35-50, ASA I-II) undergoing elective general anesthesia.
The main question it aims to answer is:
\- Does a lower magnitude of intraoperative alpha wave power correlate with a longer time for patients to emerge from general anesthesia?
Participants will:
* Undergo a standardized general anesthesia (GA) protocol for elective surgery. * Have their EEG activity recorded using a standard clinical BIS™ anesthetic depth monitor during the procedure. * Have their time to awakening precisely measured after the cessation of anesthetic gases.
Elective surgery under general anesthesia
Age 35-50 years
ASA physical status I-II
Neurological or psychiatric disorders
Use of psychotropic drugs or opioids
Altered consciousness
BMI > 35 kg/m²
Young adult patients undergoing an elective surgery at the Hospital Clínico, University of Chile, Santiago, Chile.
Cohort
Prospective
Intraoperative EEG Recording
Procedure/SurgeryPatients will be monitored with a frontal EEG during general anesthesia using the BIS Monitor to calculate alpha power
Anesthesia emergence time
Minutes from the end of the sevoflurane administration until eye opening to verbal stimulus
Relative alpha power
Relative alpha power from the frontal EEG under general anesthesia
Absolute alpha power
Absolute alpha power from frontal EEG under general anesthesia
Extubation time
Time from the end of administration of sevoflurane until extubation
Fentanyl requirements
Total dose of fentanyl (mcg) requirement during general anesthesia
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University of Chile
Lead sponsor
Center for Advanced Clinical Research (CICA ) - University of Chile
Collaborator
This trial is not recruiting at the moment. You can still explore other options:
