NCT02901028

Brief Summary

Significant morbidity, mortality, and related costs are caused by traumatic brain injury (TBI). A simple, effective, and lightweight device worn by athletes or war fighters in the field, designed to mitigate TBI resulting from blast trauma or concussive events, would save lives, and the huge costs currently being experienced for life-treatment of surviving victims. An externally-worn medical device that applies mild jugular compression according to the principle of the Queckenstedt Maneuver. PURPOSE: To monitor changes in vital signs, blood physiologies, oxygen consumption, biomechanics, strength, neurological capabilities, and balance in a population of athletes wearing the Device. Secondly, to determine the tolerance and acceptance of the Device while undergoing exertion.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
20

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Apr 2013

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

April 1, 2013

Completed
3 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 1, 2013

Completed
1 month until next milestone

Study Completion

Last participant's last visit for all outcomes

August 1, 2013

Completed
2.2 years until next milestone

First Submitted

Initial submission to the registry

October 20, 2015

Completed
11 months until next milestone

First Posted

Study publicly available on registry

September 15, 2016

Completed
Last Updated

September 15, 2016

Status Verified

September 1, 2016

Enrollment Period

3 months

First QC Date

October 20, 2015

Last Update Submit

September 9, 2016

Conditions

Outcome Measures

Primary Outcomes (6)

  • Measure any changes in blood physiologies

    To monitor changes blood physiologies in a population of athletes wearing the Device.

    1 week

  • measure any changes in oxygen consumption

    To monitor changes oxygen consumption in a population of athletes wearing the Device.

    1 week

  • measure any changes in strength

    To monitor changes in strength in a population of athletes wearing the Device.

    1 week

  • Measure any changes in biomechanics

    To monitor changes in biomechanics balance in a population of athletes wearing the Device.

    1 week

  • Measure any changes in neurological capabilities

    To monitor changes in neurological capabilities in a population of athletes wearing the Device.

    1 week

  • Measure any changes in balance

    To monitor changes in and balance in a population of athletes wearing the Device.

    1 week

Secondary Outcomes (1)

  • Number of participants with intervention-related adverse events as assessed by participant survey

    1 week

Study Arms (2)

Collar Device

EXPERIMENTAL

The Device is a standard hockey neck guard, adapted for the purposes of this study. The Device incorporates two bulges localized over the site of the internal jugular veins bilaterally. Experiments performed with jugular Doppler ultrasound demonstrate that while wearing the Device, flows within the jugular veins are reduced, while flow within the carotid arteries and all portions of the cerebrum are preserved (JA Fisher, unpublished data). Thus, application of the Device to the subject will not cause any untoward health risks. The pressure exerted by the Device on the region of the neck superficial to the internal jugular vein is akin to the pressure felt when a person yawns or wears a snugly fitting necktie.

Other: Laboratory testingOther: Blood and Urine Draws

Arm Device

SHAM COMPARATOR

the subject is wearing a sham arm device, which will be placed on the upper arm and not cause venous engorgement. The subject will undergo the same testing as when wearing the collar device (strength, Vo2, vision, blood, urine, etc)

Other: Laboratory testingOther: Blood and Urine Draws

Interventions

Subjects will visit the Human Performance Laboratory on two separate occasions to perform the testing procedures. testing consists of VO2, strength, biomechanics, dynavision, etc.

Arm DeviceCollar Device

subjects will have a blood draw and provide a urine sample

Arm DeviceCollar Device

Eligibility Criteria

Age18 Years - 25 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Normal healthy volunteer
  • Able to provide written consent
  • Able to tolerate hypercapnia for 1-2 minutes
  • Must be 18 years or older

You may not qualify if:

  • Unable to provide written consent
  • History of neurological deficits, previous cerebral infarction, or head trauma
  • Medical contraindications to limited hypercapnia or restriction of venous outflow via the internal jugular veins (known increased intracerebral pressure, metabolic acidosis or alkalosis)
  • Glaucoma (Narrow Angle or Normal Tension)
  • Hydrocephalus
  • Recent penetrating brain trauma (within 6 months)
  • Known carotid hypersensitivity
  • Known increased intracranial pressure
  • Central vein thrombosis
  • Known open eye injuries
  • Neck injuries
  • Any known airway obstruction
  • Any known seizure disorder
  • Any altered level of consciousness
  • Have suffered an injury to a lower extremity in the past 6 months
  • +7 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Cincinnati Childrens Hospital Medical Center

Cincinnati, Ohio, 45229, United States

Location

MeSH Terms

Conditions

Brain Concussion

Interventions

Blood Specimen Collection

Condition Hierarchy (Ancestors)

Brain Injuries, TraumaticBrain InjuriesBrain DiseasesCentral Nervous System DiseasesNervous System DiseasesCraniocerebral TraumaTrauma, Nervous SystemHead Injuries, ClosedWounds and InjuriesWounds, Nonpenetrating

Intervention Hierarchy (Ancestors)

Specimen HandlingClinical Laboratory TechniquesDiagnostic Techniques and ProceduresDiagnosisPuncturesSurgical Procedures, OperativeInvestigative Techniques

Study Officials

  • Gregory D Myer, PhD

    Cincinnati Childrens Hospital

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Intervention Model
CROSSOVER
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

October 20, 2015

First Posted

September 15, 2016

Study Start

April 1, 2013

Primary Completion

July 1, 2013

Study Completion

August 1, 2013

Last Updated

September 15, 2016

Record last verified: 2016-09

Data Sharing

IPD Sharing
Will not share

Results will be published however individual participant data will remain secure

Locations