ConsCIOUS2 Study of the Isolated Forearm Technique Commands

NCT ID: NCT03503357

Last Updated: 2021-12-03

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

344 participants

Study Classification

INTERVENTIONAL

Study Start Date

2018-04-04

Study Completion Date

2019-12-23

Brief Summary

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ConsCIOUS-2 is a multi-site study exploring the cognitive state of the Isolated Forearm Test (IFT) responder while under anesthetic.

Detailed Description

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500 participants between the ages of 18-40 who will be undergoing surgery requiring general anesthetic will be recruited for this study. This study will use the Isolated Forearm Test (IFT) to identify patients at risk of anesthesia awareness. In the IFT, induction of anesthesia is followed by inflation of a cuff on the dominant arm before neuromuscular blockade (paralysis) is induced. The cuff prevents paralysis of the hand allowing the patient to communicate to an observer through predefined hand movements, typically following a command like: "Mrs. Jones, if you can hear me, squeeze my hand". Participants will thus be asked to follow a series of commands intraoperatively to assess awareness.

Routinely recorded clinical data will be collected to frame the observations about IFT responsiveness, and non-invasive EEG data will also be collected to provide information about the "brain state" of the patients. Patient reported confusion and objectively measured confusion using the Nurse Based Delirium Screening Tool (NuDesc) will be collected post operatively. Finally, participants will be contacted 24 hours and 7 days following their operation to complete an anesthesia satisfaction questionnaire.

Conditions

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Anesthesia Awareness

Keywords

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Consciousness Electroencephalography Anesthesia

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

SINGLE

Participants

Study Groups

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IFT Testing 1

Participants will be fitted with and IFT cuff and randomized to command list A intra-operatively to assess awareness.

Group Type EXPERIMENTAL

IFT Testing1

Intervention Type OTHER

Command List A

IFT Testing 2

Participants will be fitted with and IFT cuff and randomized to command list B intra-operatively to assess awareness.

Group Type EXPERIMENTAL

IFT Testing 2

Intervention Type OTHER

Command List B

IFT Testing 3

Participants will be fitted with and IFT cuff and randomized to command list C intra-operatively to assess awareness.

Group Type EXPERIMENTAL

IFT Testing 3

Intervention Type OTHER

Command List C

IFT Testing 4

Participants will be fitted with and IFT cuff and randomized to command list D intra-operatively to assess awareness.

Group Type EXPERIMENTAL

IFT Testing 4

Intervention Type OTHER

Command List D

Interventions

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IFT Testing1

Command List A

Intervention Type OTHER

IFT Testing 2

Command List B

Intervention Type OTHER

IFT Testing 3

Command List C

Intervention Type OTHER

IFT Testing 4

Command List D

Intervention Type OTHER

Other Intervention Names

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Command List A Command List B Command List C Command List D

Eligibility Criteria

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Inclusion Criteria

1. Age 18-40 years
2. English (or local language) competent
3. Informed consent obtained
4. Patients clinically requiring general anesthesia and intubation
5. Able to safely follow the IFT commands when awake and prior to their operation, per discretion of the PI.

Exclusion Criteria

1. Age \< 18 years old, \>40 years old
2. Unable or unwilling to sign consent
3. Unable to undergo postoperative questions
4. Contraindication to IFT test such as unable to have tourniquet on arm for the IFT (e.g. lymphedema or operative site), rapid sequence inductions and requiring paralysis for laryngoscopy and intubation, per discretion of the PI.
Minimum Eligible Age

18 Years

Maximum Eligible Age

40 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Rambam Health Care Campus

OTHER

Sponsor Role collaborator

University of Groningen

OTHER

Sponsor Role collaborator

Centre Hospitalier Regional de la Citadelle

UNKNOWN

Sponsor Role collaborator

RWTH Aachen University

OTHER

Sponsor Role collaborator

University of Pennsylvania

OTHER

Sponsor Role collaborator

Ludwig-Maximilians - University of Munich

OTHER

Sponsor Role collaborator

Cornell University

OTHER

Sponsor Role collaborator

Cairns Hospital

UNKNOWN

Sponsor Role collaborator

Auckland District Health Board

OTHER_GOV

Sponsor Role collaborator

Waikato Hospital

OTHER

Sponsor Role collaborator

University of Wisconsin, Madison

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Robert Sanders, MBBS, PhD, FRCA

Role: PRINCIPAL_INVESTIGATOR

University of Wisconsin, Madison

Locations

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Cornell University

New York, New York, United States

Site Status

University of Pennsylvania

Philadelphia, Pennsylvania, United States

Site Status

University of Wisconsin Hospital and Clinics

Madison, Wisconsin, United States

Site Status

Cairns Hospital

Cairns, , Australia

Site Status

Centre Hospitalier Regional de la Citadelle

Liège, , Belgium

Site Status

RWTH Aachen University

Aachen, , Germany

Site Status

University of Munich

Munich, , Germany

Site Status

Rambam Health Care Campus

Haifa, , Israel

Site Status

University of Groningen

Groningen, , Netherlands

Site Status

Auckland District Health Board

Auckland, , New Zealand

Site Status

Waikato Hospital

Hamilton, , New Zealand

Site Status

Countries

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United States Australia Belgium Germany Israel Netherlands New Zealand

Other Identifiers

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A530900

Identifier Type: OTHER

Identifier Source: secondary_id

SMPH\ANESTHESIOLOGY\ANESTHESIO

Identifier Type: OTHER

Identifier Source: secondary_id

2017-0728

Identifier Type: -

Identifier Source: org_study_id