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CompletedNCT01897194Updated Mar 18, 2025

Using EEG to Study Coma in the Neurocritical Care Unit

An observational study in Coma, sponsored by University of Utah. Completed. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-03-18.

Sponsored by University of Utah · Observational

Study type
Observational
Model
Case-control
Time perspective
Prospective
Enrollment
1
Ages
18 Years and older
Sex
All
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Study summary

Despite its clinical significance, the pathophysiology of coma is still under investigation and the physiology of emergence from coma remains a mystery. Furthermore, predictors of emergence from coma, despite their obvious clinical value, remain un-established. Because of its low arousal state and hypothesized parallel neurophysiological mechanisms, sleep has been studied as both an animal and human model of coma, and awakening from sleep has likewise been studied as a surrogate of coma emergence. In this study, we will determine whether certain electrographic patterns, known as spectral shifts, which have correlates in normal sleep, are predictive of eventual awakening from coma and the time course of this emergence. To detect spectral shifts in comatose patients, EEG monitoring must be performed for several days. Quick, simple, and reliable EEG recording in the ICU will be enhanced by a small device that can be easily and properly positioned on the head by hospital personnel and which lacks cumbersome cables or receivers. Traditional EEG monitoring requires placement of up to 25 wires, which can impede efficient intensive patient care. Our hypothesis is that we can detect a difference in spectral shifts in comatose patients who will eventually emerge from coma as compared to comatose patients who do not wake up and that a wireless EEG patch-type device can effectively make this distinction.

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Conditions studied

  • Coma

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In context

Coma

138 studies on the registry are indexed under Coma; 35 are open to participants now.

This study's enrollment of 1 is below the median of 100 across 58 observational studies indexed under Coma.

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Lead sponsor

University of Utah is the lead sponsor of 994 studies on the registry; 175 are open to participants now.

Of its 114 completed or terminated interventional studies of FDA-regulated products, 69 (61%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

Neuro Critical Care Patients

Eligibility criteria

Inclusion Criteria: All patients with brain injuries admitted to the neurocritical care unit will be screened for enrollment. The estimated enrollment will be for 100 patients. 90 patients will be comatose with Glascow Coma Scale \< 9. The other 10 patients will be control, non-comatose patients for quality control of the device. Consent for inclusion will be obtained from the patient or next of kin for all enrolled patients.

Exclusion Criteria: None

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Study design

Observational model
Case-control
Time perspective
Prospective
Enrollment
1 participant (actual)
Patient registry
No

Groups and cohorts

  • Coma Patients

    Observation of EEG patterns in coma patients.

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What researchers measure

Primary outcomes

  1. Emergence from coma

    Time frame: 1 year post admission

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Study locations

No study locations are listed for this record.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 18, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT01897194
Lead sponsor
University of Utah
Responsible party
Sponsor
First posted
Jul 11, 2013
Start date
Jul 2013
Primary completion
Jul 2014
Completion
Jul 2014
Last update
Mar 18, 2025

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Dec 2014. You cannot join it, but the record below documents what was studied.

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Discussion

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