Validation of a Delirium Monitor

May 2, 2017 updated by: A.J.C. Slooter, UMC Utrecht

Validation of a Delirium Monitor in Postoperative Elderly Patients

Delirium is a common disorder in hospitalized patients, nevertheless it is poorly recognized by physicians and nurses, even when screening instruments are used. Electroencephalography (EEG) appears to be a sensitive tool for the diagnosis of delirium. However, standard EEG recording with 25 electrodes is labor intensive. We have previously showed that a brief EEG registration with three electrodes and automatic processing can distinguish patients with delirium from patients without delirium very well. However, these findings need to be validated in an unselected population.

The primary objective of this validation study is to investigate the sensitivity, specificity, and predictive values of the EEG-based delirium monitor (including three electrodes and a reference electrode) compared to delirium quantification in frail elderly patients after surgery.

In an international multicenter study, 154 frail elderly patients will be included who will undergo elective surgery and are expected to remain admitted for at least two postoperative days. Patients are excluded if communication is not possible or admitted for neurological surgery.

A five minute EEG registration with the delirium monitor with four electrodes will be performed prior surgery and three consecutive days after surgery or until discharge. Within one hour of the EEG recording, the delirium assessment will be performed and recorded on video, which will be evaluated by delirium experts. The relative delta power (calculated from one minute of artifact-free EEG segment) will be compared with the conclusion of the delirium experts.

Study Overview

Status

Completed

Conditions

Study Type

Observational

Enrollment (Actual)

159

Contacts and Locations

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

Study Locations

  • Netherlands
      • Utrecht, Netherlands
        • University Medical Center Utrecht

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

Ages Eligible for Study

60 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

The source population will consist of frail, elderly patients (≥60 years) who will undergo elective surgery in the University Medical Center Utrecht, Isala Clinics Zwolle, Radboud University Medical Center Nijmegen, or Charité Universitätsmedizin Berlin, and who will be expected to remain admitted for at least two postoperative days. These patients will be informed on this study before admission to the hospital.

Description

Inclusion Criteria:

  • 60 years and older
  • Frail
  • Undergoing elective surgery
  • Expected to remain admitted for at least 2 postoperative days

Exclusion Criteria:

  • No communication possible due to a language barrier or deafness
  • Admission for neurological surgery
  • Participation in this study during a previous hospital admission
  • Practical or logistical reasons hampering the use of the delirium monitor, such as technical failure of the monitor
  • Isolation because of known carrier ship of a resistant bacterium

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

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Relative delta power (based on 1 min. artifact-free data) will be compared to the classification of the delirium expert in elderly postoperative patients resulting in the sensitivity, specificity and predictive values of the delirium monitor for each day
Time Frame: 4 days
4 days

Collaborators and Investigators

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

Sponsor

UMC Utrecht

Collaborators

Charite University, Berlin, Germany
Isala
University Medical Center Nijmegen

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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

March 1, 2014

Primary Completion (Actual)

July 1, 2016

Study Completion (Actual)

December 1, 2016

Study Registration Dates

First Submitted

March 2, 2015

First Submitted That Met QC Criteria

March 30, 2015

First Posted (Estimate)

March 31, 2015

Study Record Updates

Last Update Posted (Actual)

May 3, 2017

Last Update Submitted That Met QC Criteria

May 2, 2017

Last Verified

May 1, 2017

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • NL46622.041.13

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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