Study Stopped
Participants not enrolled due to interest in the project
Participants not enrolled due to interest in the project
Sponsor study identifier
interventional
0
0 countries
N/A
Study Start
December 2024
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Primary Completion
December 2025
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Study Completion
December 2025
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
The investigators hypothesize that the Q-collar compression on bilateral internal jugular veins of patients with low pressure hydrocephalus will decrease venous drainage from the intracranial space, therefore increasing intracranial volume, decreasing brain compliance, and increasing CSF drainage through the shunt. This should improve persistent hydrocephalus symptoms and demonstrate improved ventricular drainage on imaging with decompressed ventricles.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
December 2025
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
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Some registry-reported names shown below are not yet linked in this graph.
Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
October 3, 2023
Actual (reported)November 13, 2023
Actual (reported)December 2024
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
December 2025
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
December 2025
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Ventricular drainage
Amount of ventricular drainage with Q collar treatment
within 4-6 weeks
Ventricular size
change in ventricular size with Q collar treatment
within 4-6 weeks
Change in low-pressure hydrocephalus symptoms
4-6 weeks
All patients with low-pressure hydrocephalus that qualify for the study and agree to participate will receive the Q-collar for intervention
Q-collar is placed for all patients that are admitted with low-pressure hydrocephalus
Registry-reported names are shown in full. Names without a link have not yet been matched to a Syfrah profile.
Smith DW, Bailes JE, Fisher JA, Robles J, Turner RC, Mills JD. Internal jugular vein compression mitigates traumatic axonal injury in a rat model by reducing the intracranial slosh effect. Neurosurgery. 2012 Mar;70(3):740-6. doi: 10.1227/NEU.0b013e318235b991.
Turner RC, Naser ZJ, Bailes JE, Smith DW, Fisher JA, Rosen CL. Effect of slosh mitigation on histologic markers of traumatic brain injury: laboratory investigation. J Neurosurg. 2012 Dec;117(6):1110-8. doi: 10.3171/2012.8.JNS12358. Epub 2012 Sep 21.
0 participants (actual enrollment reported by the registry).
First Submitted
October 3, 2023
First Posted
November 13, 2023
Study Start
December 2024
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Contact the study team to confirm eligibility.
Sindelar B, Bailes J, Sherman S, Finan J, Stone J, Lee J, Ahmadian S, Zhou Y, Patel V, Smith D. Effect of Internal Jugular Vein Compression on Intracranial Hemorrhage in a Porcine Controlled Cortical Impact Model. J Neurotrauma. 2017 Apr 15;34(8):1703-1709. doi: 10.1089/neu.2016.4648. Epub 2016 Dec 16.
Mannix R, Morriss NJ, Conley GM, Meehan WP 3rd, Nedder A, Qiu J, Float J, DiCesare CA, Myer GD. Internal Jugular Vein Compression Collar Mitigates Histopathological Alterations after Closed Head Rotational Head Impact in Swine: A Pilot Study. Neuroscience. 2020 Jun 15;437:132-144. doi: 10.1016/j.neuroscience.2020.04.009. Epub 2020 Apr 10.
Myer GD, Yuan W, Barber Foss KD, Thomas S, Smith D, Leach J, Kiefer AW, Dicesare C, Adams J, Gubanich PJ, Kitchen K, Schneider DK, Braswell D, Krueger D, Altaye M. Analysis of head impact exposure and brain microstructure response in a season-long application of a jugular vein compression collar: a prospective, neuroimaging investigation in American football. Br J Sports Med. 2016 Oct;50(20):1276-1285. doi: 10.1136/bjsports-2016-096134. Epub 2016 Jun 15.
Myer GD, Yuan W, Barber Foss KD, Smith D, Altaye M, Reches A, Leach J, Kiefer AW, Khoury JC, Weiss M, Thomas S, Dicesare C, Adams J, Gubanich PJ, Geva A, Clark JF, Meehan WP 3rd, Mihalik JP, Krueger D. The Effects of External Jugular Compression Applied during Head Impact Exposure on Longitudinal Changes in Brain Neuroanatomical and Neurophysiological Biomarkers: A Preliminary Investigation. Front Neurol. 2016 Jun 6;7:74. doi: 10.3389/fneur.2016.00074. eCollection 2016.
Dinsmore M, Hajat Z, Brenna CT, Fisher J, Venkatraghavan L. Effect of a neck collar on brain turgor: a potential role in preventing concussions? Br J Sports Med. 2022 Jun;56(11):605-607. doi: 10.1136/bjsports-2021-103961. Epub 2021 Nov 25.
Filippidis AS, Kalani MY, Nakaji P, Rekate HL. Negative-pressure and low-pressure hydrocephalus: the role of cerebrospinal fluid leaks resulting from surgical approaches to the cranial base. J Neurosurg. 2011 Nov;115(5):1031-7. doi: 10.3171/2011.6.JNS101504. Epub 2011 Jul 29.
Strand A, Balise S, Leung LJ, Durham S. Low-Pressure Hydrocephalus: A Case Report and Review of the Literature. World Neurosurg. 2018 Jan;109:e131-e135. doi: 10.1016/j.wneu.2017.09.120. Epub 2017 Sep 28.
Primary Completion
December 2025
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Study Completion
December 2025
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Last Updated
July 8, 2025
Record last verified: 2025-07
Download the complete ClinicalTrials.gov record imported by Syfrah, including fields not shown in this page. The registry may contain a newer revision.
Source: ClinicalTrials.gov.
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