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EEG During Gastroscopy and/or Colonoscopy

NCT07073274 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 149

Last updated 2026-03-18

No results posted yet for this study

Summary

During anesthesia, EEG shows specific and significant changes according to the depth of anesthesia and the drugs used. Endoscopic procedures like gastroscopies or colonoscopies are usually done on an outpatient basis using essentially propofol for sedation or anesthesia. Preliminary reports have shown that the depth of anesthesia during these procedures may be very deep resulting even in a burst suppression pattern on the EEG.

In this study, frontal EEG will be recorded continuously using a Root - Sedline device (Masimo, US). Anesthesiologists will be free to use the medications and dosage they judge appropriate. The attending anesthesiologist will be blinded to the EEG. Medications and dosages will be recorded, as well as processed EEG data from the Sedline and the raw EEG. Primary outcome is the % of time spend in specific range of patient state index (PSI 0-10; 10-20; 20-30; 30-40; 40-50; 5-60; 60-70; 70-80; 80-90; 90-100) as well as the % of time spent in burst suppression.

Conditions

  • Endoscopy of Stomach (Procedure)
  • Colonoscopy (Procedure)
  • Continuous Processed Electroencephalogram (Procedure)

Interventions

DIAGNOSTIC_TEST

EEG analysis

All patients will have a continous recording of their EEG during anesthesia

Sponsors & Collaborators

  • Erasme University Hospital

    lead OTHER

Study Design

Allocation
NA
Purpose
BASIC_SCIENCE
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-07-25
Primary Completion
2026-02-15
Completion
2026-02-28

Countries

  • Belgium

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07073274 on ClinicalTrials.gov