- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04206059
Closed Loop Acoustic Stimulation During Sedation With Dexmedetomidine (CLASS-D)
November 29, 2022 updated by: Ben J.A. Palanca, Washington University School of Medicine
Prospective within-subject study of dexmedetomidine sedation paired with CLAS conditions in repeated blocks.
Intervention will consist of CLAS in-phase with EEG slow waves.
Anti-phase stimulation will serve as an active control while sham stimulation will serve as a passive control.
Study Overview
Status
Active, not recruiting
Conditions
Intervention / Treatment
Detailed Description
Both nonpharmacologic and pharmacologic interventions augment expression of EEG slow waves that mimic those of natural sleep.
Closed loop auditory stimulation (CLAS) is a noninvasive inexpensive approach to augment the spectral power and duration of these slow waves.
Whether in-phase CLAS may address this need is unknown, since acoustic potentiation of pharmacologically-induced slow waves has not been investigated.
This prospective within-subject study of dexmedetomidine sedation paired with CLAS will assess the feasibility of augmenting EEG slow waves during sedation.
Study Type
Interventional
Enrollment (Actual)
20
Phase
- Not Applicable
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
-
-
Missouri
-
Saint Louis, Missouri, United States, 63110
- Washington University School of Medicine/Barnes-Jewish Hospital
-
-
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
18 years to 40 years (ADULT)
Accepts Healthy Volunteers
Yes
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Age 18-40 years
- Healthy volunteers (American Society of Anesthesiologists Physical Status 1-2).
Exclusion Criteria:
- Diagnosed sleep disorders
- Habitually short sleepers
- Diagnosed psychiatric disorders
- Use of psychoactive medication (e.g., antidepressants, mood stabilizers or antipsychotics), diagnosed hearing disorder
- Neck circumference > 40 cm
- Body Mass Index > 30
- Acknowledged recreational drug or nicotine use
- Resting heart rate during slow wave sleep < 40 beats per minute
- Pregnancy or nursing
- Persistently inconsistent or elevated QST heat pain tolerance thresholds (>50 ºC).
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
- Primary Purpose: DIAGNOSTIC
- Allocation: NA
- Interventional Model: SINGLE_GROUP
- Masking: NONE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
EXPERIMENTAL: CLASS-D Cohort
Within-subject crossover cohort with intervention, acoustic stimulation delivered in phase with the anticipated trough of EEG slow wave oscillation, and 0 dB stimulation.
|
A non-contrast brain MRI will be acquired for localizing EEG slow waves
Other Names:
Quantitative sensory testing (QST) using increasing ramp thermal stimulation (32-52 ºC) will be delivered to compare arousal thresholds between conditions.
Other Names:
Unattended home sleep studies will be conducted on the night preceding sedation and on the night following sedation to assess changes in slow wave homeostasis.
Other Names:
Acoustic stimulation (65 db) synchronized in-phase with the up-slope of EEG slow waves
Other Names:
65 dB acoustic stimulation synchronized with the down-slope of the EEG slow waves (anti-phase)
Other Names:
sham stimulation (0 dB volume)
Other Names:
All participants will receive dexmedetomidine with sedation titrated step-wise to 2, 3 or 4 ng/ml
Other Names:
All participants will be asked to perform the breathe-squeeze task throughout the experiment.
This will allow us to determine loss and return of responsiveness.
Other Names:
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Difference in EEG slow wave amplitude from sham to in-phase stimulation
Time Frame: up to 3 months after consent
|
EEG slow waves amplitude relative to the timing of the stimulation
|
up to 3 months after consent
|
Difference in EEG slow wave duration from sham to in-phase stimulation
Time Frame: up to 3 months after consent
|
EEG slow waves duration relative to the timing of the stimulation
|
up to 3 months after consent
|
Difference in EEG slow wave amplitude from anti-phase to in-phase stimulation
Time Frame: up to 3 months after consent
|
EEG slow waves amplitude relative to the timing of the stimulation
|
up to 3 months after consent
|
Difference in EEG slow wave duration from anti-phase to in-phase stimulation
Time Frame: up to 3 months after consent
|
EEG slow waves duration relative to the timing of the stimulation
|
up to 3 months after consent
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Difference of reactivity to thermal stimulation from anti-phase to in-phase stimulation
Time Frame: up to 3 months after consent
|
Threshold for responsiveness to thermal stimulation
|
up to 3 months after consent
|
Difference of reactivity to thermal stimulation from sham to in-phase stimulation
Time Frame: up to 3 months after consent
|
Threshold for responsiveness to thermal stimulation
|
up to 3 months after consent
|
Change in slow wave activity on the night of the intervention will be compared to that on the night prior to the study session.
Time Frame: up to 3 months after consent
|
Slow wave activity calculated during N3 sleep
|
up to 3 months after consent
|
Localization of slow waves
Time Frame: up to 3 months after consent
|
Brain regions with localization of EEG slow waves during dexmedetomidine sedation
|
up to 3 months after consent
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Investigators
- Principal Investigator: Ben J Palanca, MD PhD, Washington University School of Medicine
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
- Prerau MJ, Brown RE, Bianchi MT, Ellenbogen JM, Purdon PL. Sleep Neurophysiological Dynamics Through the Lens of Multitaper Spectral Analysis. Physiology (Bethesda). 2017 Jan;32(1):60-92. doi: 10.1152/physiol.00062.2015.
- Leger D, Debellemaniere E, Rabat A, Bayon V, Benchenane K, Chennaoui M. Slow-wave sleep: From the cell to the clinic. Sleep Med Rev. 2018 Oct;41:113-132. doi: 10.1016/j.smrv.2018.01.008. Epub 2018 Feb 5.
- Neske GT. The Slow Oscillation in Cortical and Thalamic Networks: Mechanisms and Functions. Front Neural Circuits. 2016 Jan 14;9:88. doi: 10.3389/fncir.2015.00088. eCollection 2015.
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 (ACTUAL)
January 20, 2021
Primary Completion (ACTUAL)
June 1, 2022
Study Completion (ANTICIPATED)
July 1, 2023
Study Registration Dates
First Submitted
December 9, 2019
First Submitted That Met QC Criteria
December 17, 2019
First Posted (ACTUAL)
December 20, 2019
Study Record Updates
Last Update Posted (ACTUAL)
December 2, 2022
Last Update Submitted That Met QC Criteria
November 29, 2022
Last Verified
November 1, 2022
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Physiological Effects of Drugs
- Adrenergic Agents
- Neurotransmitter Agents
- Molecular Mechanisms of Pharmacological Action
- Central Nervous System Depressants
- Peripheral Nervous System Agents
- Analgesics
- Sensory System Agents
- Analgesics, Non-Narcotic
- Adrenergic alpha-2 Receptor Agonists
- Adrenergic alpha-Agonists
- Adrenergic Agonists
- Hypnotics and Sedatives
- Dexmedetomidine
Other Study ID Numbers
- 201907086
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
Yes
product manufactured in and exported from the U.S.
Yes
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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