Noninvasive Monitoring of Cerebral Blood Flow Autoregulation in Patients With Traumatic Brain Injury (TBI)
NCT ID: NCT01605838
Last Updated: 2015-01-14
Study Results
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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WITHDRAWN
OBSERVATIONAL
2012-08-31
2014-05-31
Brief Summary
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OBJECTIVES: The primary objectives are to (Obj. 1) demonstrate that REG acquired noninvasively is equal to the well-established but invasive method using intracranial pressure (ICP) monitoring, (Obj. 2) retrospectively test the idea that TBI patients have a less favorable outcome if their CPP were found less optimal using the REG data, and (Obj. 3) determine if noninvasive IPG or the PPG finger sensor monitoring (used to measure heart rate in doctor's offices) can replace the invasive monitoring of arterial blood pressure (ABP).
METHODOLOGY: This is an observational study with retrospective data analysis. 20 adult patients (18-65 yrs) with acute TBI, who meet the inclusion/exclusion criteria, will be enrolled on a first-come-first-enroll basis. The enrolled patients will have the REG, EEG and IPG signals monitored for the duration of ICU stay or 15 days, whichever is shorter. Standard neurological assessment will be made at the patient's discharge from the ICU and at 3 months after injury. The study is expected to end June 2013.
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Detailed Description
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Conditions
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Study Design
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COHORT
PROSPECTIVE
Eligibility Criteria
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Inclusion Criteria
* Hospitalization within 12 hours from the injury
* Intraarterial catheterization and intracranial pressure (ICP) monitoring instantiated within 72 hours from the injury
Exclusion Criteria
* Concomitant severe injuries of the chest, abdomen, pelvis, extremities or spine
* Concurrent terminal illness with a life expectancy of less than 6 months
* Unlikely to survive the next 48 hours after enrollment
* Implanted cardiac pacemaker, cardiac converter/defibrillator, or other electrical stimulator
* Pregnancy
* Patient is a prisoner or on a probation
18 Years
65 Years
ALL
No
Sponsors
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University of Southern California
OTHER
Advanced Brain Monitoring, Inc.
INDUSTRY
Responsible Party
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Principal Investigators
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Djordje Popovic, MD
Role: PRINCIPAL_INVESTIGATOR
Advanced Brain Monitoring, Inc.
Locations
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LA County + USC Medical Center
Los Angeles, California, United States
Countries
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References
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Overgaard J, Tweed WA. Cerebral circulation after head injury. 1. Cerebral blood flow and its regulation after closed head injury with emphasis on clinical correlations. J Neurosurg. 1974 Nov;41(5):531-41. doi: 10.3171/jns.1974.41.5.0531. No abstract available.
Czosnyka M, Smielewski P, Kirkpatrick P, Menon DK, Pickard JD. Monitoring of cerebral autoregulation in head-injured patients. Stroke. 1996 Oct;27(10):1829-34. doi: 10.1161/01.str.27.10.1829.
Lam JM, Hsiang JN, Poon WS. Monitoring of autoregulation using laser Doppler flowmetry in patients with head injury. J Neurosurg. 1997 Mar;86(3):438-45. doi: 10.3171/jns.1997.86.3.0438.
Lang EW, Chesnut RM. A bedside method for investigating the integrity and critical thresholds of cerebral pressure autoregulation in severe traumatic brain injury patients. Br J Neurosurg. 2000 Apr;14(2):117-26. doi: 10.1080/02688690050004534.
Steiner LA, Czosnyka M, Piechnik SK, Smielewski P, Chatfield D, Menon DK, Pickard JD. Continuous monitoring of cerebrovascular pressure reactivity allows determination of optimal cerebral perfusion pressure in patients with traumatic brain injury. Crit Care Med. 2002 Apr;30(4):733-8. doi: 10.1097/00003246-200204000-00002.
Lang EW, Mehdorn HM, Dorsch NW, Czosnyka M. Continuous monitoring of cerebrovascular autoregulation: a validation study. J Neurol Neurosurg Psychiatry. 2002 May;72(5):583-6. doi: 10.1136/jnnp.72.5.583.
Schmidt B, Czosnyka M, Raabe A, Yahya H, Schwarze JJ, Sackerer D, Sander D, Klingelhofer J. Adaptive noninvasive assessment of intracranial pressure and cerebral autoregulation. Stroke. 2003 Jan;34(1):84-9. doi: 10.1161/01.str.0000047849.01376.ae.
Brady KM, Shaffner DH, Lee JK, Easley RB, Smielewski P, Czosnyka M, Jallo GI, Guerguerian AM. Continuous monitoring of cerebrovascular pressure reactivity after traumatic brain injury in children. Pediatrics. 2009 Dec;124(6):e1205-12. doi: 10.1542/peds.2009-0550.
Bodo M. Studies in rheoencephalography . Journal of Electrical Bioimpedance 2010; 1: 18 - 40.
Bodo M, Pearce FJ, Montgomery LD, Rosenthal M, Kubinyi G, Thuroczy G, Braisted J, Forcino D, Morrissette C, Nagy I. Measurement of brain electrical impedance: animal studies in rheoencephalography. Aviat Space Environ Med. 2003 May;74(5):506-11.
Bodo M, Pearce FJ, Baranyi L, Armonda RA. Changes in the intracranial rheoencephalogram at lower limit of cerebral blood flow autoregulation. Physiol Meas. 2005 Apr;26(2):S1-17. doi: 10.1088/0967-3334/26/2/001. Epub 2005 Mar 29.
Bodo M, Pearce FJ, Armonda RA. Cerebrovascular reactivity: rat studies in rheoencephalography. Physiol Meas. 2004 Dec;25(6):1371-84. doi: 10.1088/0967-3334/25/6/003.
Other Identifiers
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W81XWH - 10 - C - 0061
Identifier Type: OTHER_GRANT
Identifier Source: secondary_id
ABM-TBI-0001
Identifier Type: -
Identifier Source: org_study_id
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