The Clinical Research of Needle Electrodes Used in Bispectral Index to Monitor the Depth of Anesthesia

December 6, 2021 updated by: Second Affiliated Hospital, School of Medicine, Zhejiang University
In this study, the EEG information of patients was collected by different BIS electrodes, in order to compare the quality of EEG signals obtained by subdermal needle electrodes and the original BIS sensors, and try to use primitive EEG signals to develop a new calculation of needle electrode to monitor the depth of anesthesia.

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

After the patient enters the room, non-invasive BP, HR, end-tidal CO2, SPO2 and other routine monitoring are performed, and the corresponding BIS electrodes are worn to the patient. The anesthesiologist decides whether to perform invasive hemodynamic monitoring, such as invasive arterial blood pressure monitoring, central venous pressure monitoring, etc., depending on the patient's condition and surgical requirements. The induction and maintenance of anesthesia is the routine scheme in the Second Affiliated Hospital of Zhejiang University , and the medication and dose are based on the judgment of the main anesthesiologist . After induction, endotracheal intubation was performed and mechanical ventilation was given. After anesthesia induction, install subcutaneous needle electrode to the patient. BIS values were collected using two BIS monitoring systems, one using the original BIS sensor and the other connected to the needle electrodes.During the operation, the anesthesiologist adjusted the depth of anesthesia according to the original BIS value, and propofol was used to improve the depth of sedation if the BIS value was greater than 60. In this study, surface acoustic wave electronic nose was used to monitor the exhaled propofol concentration of patients undergoing general anesthesia.The BIS value, hemodynamic information, exhaled propofol concentration and plasma propofol concentration were recorded.

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 (Anticipated)

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.
120

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.
  • Name: Fengjiang Zhang, Doctor
  • Phone Number: +86 13858007629
  • Email: zrzfj@zju.edu.cn

Study Locations

  • China
    • Zhejiang
      • Hangzhou, Zhejiang, China, 310000
        • The Second Affiliated Hospital of Zhejiang University anesthesiology department

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

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

General anesthesia patients undergoing non-cardiac surgery

Description

Inclusion Criteria:

  • ASAⅠ~Ⅲ
  • Over 18 years old
  • Patients undergoing General Anesthesia surgery requiring BIS Monitoring
  • Obtained informed consent

Exclusion Criteria:

  • Patients who have mental disorders and unable to answer
  • Patients who have taken anti-epileptic drugs and psychotropic drugs for a long time
  • Patients who are pregnant
  • Patients who refuse to participate in this trial
  • Patients considered by the investigator to be unsuitable for inclusion in the trial

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.
Non-cardiac surgery patients under general anesthesia
> 18y/o patients undergoing noncardiac surgery with BIS monitoring under general anesthesia.
Other: No intervention
No intervention

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
Correlation coefficient
Time Frame: Through study completion, an average of 2 year
The correlation coefficient between the BIS value measured by the subdermal needle electrodes and the BIS value measured by the original BIS sensors
Through study completion, an average of 2 year

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Correlation between BIS values and OAA/S score
Time Frame: Through study completion, an average of 2 year
Comparison of the correlation between BIS values measured by two kinds of electrodes and OAA/S
Through study completion, an average of 2 year
Correlation between BIS values and propofol concentration
Time Frame: Through study completion, an average of 2 year
Correlation between BIS values measured by two kinds of electrodes and propofol concentration in blood From Exhaled Gas
Through study completion, an average of 2 year
Correlation between BIS values and blood pressure and heart rate
Time Frame: Through study completion, an average of 2 year
Correlation between BIS values measured by two kinds of electrodes and blood pressure and heart rate
Through study completion, an average of 2 year

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.
Second Affiliated Hospital, School of Medicine, Zhejiang University

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 (Anticipated)

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.
November 29, 2021

Primary Completion (Anticipated)

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.
October 22, 2022

Study Completion (Anticipated)

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.
February 22, 2023

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).
November 3, 2021

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.
November 18, 2021

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.
November 23, 2021

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.
December 8, 2021

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.
December 6, 2021

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.
October 1, 2021

More Information

Terms related to this study

Keywords

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.
  • 2021-0582

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

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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