IBIS - Investigating Reliability of BIS and SEDLINE Monitoring in Children With Developmental and Epileptic Encephalopathies (DEE). (IBIS)

May 27, 2026 updated by: Telethon Kids Institute

When children have surgery, anaesthetists carefully monitor the depth of anaesthesia by using sensors on the forehead that measure brain activity, also known as processed electroencephalogram (pEEG). These monitors are routinely used in paediatric anaesthesia; however, investigators do not know if they work accurately in babies and young children with seizure disorders or on anti-seizure medications.

Children with developmental and epileptic encephalopathies may need anaesthesia for tests or procedures. It is important that their treating doctors understand whether these monitors truly reflect how awake or asleep the children are. This study aims to compare a child's electrical brain activity using two commonly used devices in paediatric anaesthesia with the conventional 21-lead EEG patterns in children with seizure disorders. The results of this research may help improve the safety and perioperative care of children with seizure disorders who require general anaesthesia in the future.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

There is currently no available data on the reliability of processed electroencephalogram (pEEG) for adequately predicting depth of anaesthesia (DOA) with abnormal electroencephalogram (EEG) and those on anticonvulsant medication. Examples of epilepsy syndromes in which seizures and abnormal EEG (abnormal backgrounds: including excess discontinuity, excess slow, low amplitude, lack of sleep stages, and frequent epileptiform discharges) are predominant features are Early Infantile Developmental and Epileptic Encephalopathy (EIDEE), Epilepsy of infancy with Migrating Focal Seizures (EIMFS), Infantile Spasm Syndrome (IS) and other Epileptic encephalopathies (EE) and Developmental and Epileptic Encephalopathy (DEE). Considering the use of pEEG is common in paediatric anaesthesia and one of the strategies used to precent awareness and excessive anaesthesia provision, it would be pertinent to examine whether pEEG values truly reflect depth of sedation of these infants or if they are artificially low or high. To this end, investigators aim to concurrently measure EEG and pEEG patterns in infants with DEEs with onset in infancy and early childhood. Both pEEG patterns and their values will be measured with two commonly used monitors- the BiSpectral Index (BIS) and Sedline. Data from both pEEG monitors can then be directly compared with contemporaneous conventional EEG patterns on each patient.

This study will be conducted in collaboration with paediatric anaesthetists and neurologists in Perth Children's Hospital, Western Australia and the Hospital das Clínicas, Faculty of Medicine, University of São Paulo, Brazil. The target sample size is 40 participants- 20 from each centre. Participants will be invited to visit the hospital. Each awake participant will be fitted with a 16-lead EEG and additionally a BIS or Sedline monitor, applied consecutively in random order. The measurement period will be 30 minutes for each of the BIS and the Sedline with continuous EEG assessment throughout. This will allow the pEEG data to be measured against a corresponding continuous EEG.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
40

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Child

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

20 eligible patients identified by the neurology department at Perth Children's Hospital and 20 eligible patients identified by the neurology department at Hospital das Clinicas HCFMUSP, Faculdade de Medicina, will be approached for the study.

Description

Inclusion Criteria:

  • Children (<16 years old) with a confirmed diagnosis of early onset EE or DEE due to any cause (prior to age 2 years).

Exclusion Criteria:

  • Language barriers impeding data collection
  • Department for Child Protection and Family Support is involved in the care of the child.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Children (<16 years) with confirmed diagnosis of early onset EE or DEE due to any cause
Children (<16 years old) with a confirmed diagnosis of early onset epileptic encephalopathy (EE) or Developmental and epileptic encephalopathy (DEE) due to any cause (prior to age 2 years).
Diagnostic test: Monitoring of patients using electroencephalogram, a Bispectral Index (BIS) and Sedline monitors.

This is an observational study of children under 16 years of age, who will be fitted with a 21-lead EEG and then, in consecutive random order, a BIS or Sedline monitor with measurements taken for 30 minutes with each monitor, 60 min in total. This will allow pEEG data to be measured against a corresponding continuous EEG.

The depth of anaesthesia monitors used are Bispectral Index (BIS, Medtronic, Minneapolis, Minnesota, USA) and Sedline (Masimo, Irvine, California, USA).

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Compare pEEG values in awake patients with developmental and epileptic encephalopathies
Time Frame: 60 minutes of monitoring in total - Sedline and BIS monitors will be fitted for 30 minutes each, in consecutive random order.
pEEG will be measured using Sedline and BIS monitors alongside standard 21-lead EEG.
60 minutes of monitoring in total - Sedline and BIS monitors will be fitted for 30 minutes each, in consecutive random order.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Telethon Kids Institute

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Hospital das Clínicas de São Paulo - SP
Feculdade de Medicina da Universidade de Sao Paulo - Brasil
Child and Adolescent Health Service - Perth

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
May 20, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
May 20, 2029

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
June 20, 2029

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
May 6, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 6, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
May 14, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
May 29, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 27, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • RGS0000008394

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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