Brain Tissue Oxygen Monitoring in Traumatic Brain Injury (TBI)

2014-08-27 03:19:26 | BioPortfolio


Traumatic brain injury (TBI) is a major cause of death and disability, with an estimated cost of 45 billion dollars a year in the United States alone. Every year, approximately 1.4 million sustain a TBI, of which 50,000 people die, and another 235,000 are hospitalized and survive the injury. As a result, 80,000-90,000 people experience permanent disability associated with TBI. This project is designed to determine whether a device designed to measure brain tissue oxygenation and thus detect brain ischemia while it is still potentially treatable shows promise in reducing the duration of brain ischemia, and to obtain information required to conduct a definitive clinical trial of efficacy.

A recently approved device makes it feasible to directly and continuously monitor the partial pressure of oxygen in brain tissue (pBrO2). Several observational studies indicate that episodes of low pBrO2 are common and are associated with a poor outcome, and that medical interventions are effective in improving pBrO2 in clinical practice. However, as there have been no randomized controlled trials carried out to determine whether pBrO2 monitoring results in improved outcome after severe TBI, use of this technology has not so far been widely adopted in neurosurgical intensive care units (ICUs). This study is the first randomized, controlled clinical trial of pBrO2 monitoring, and is designed to obtain data required for a definitive phase III study, such as efficacy of physiologic maneuvers aimed at treating pBrO2, and feasibility of standardizing a complex intensive care unit management protocol across multiple clinical sites.

Patients with severe TBI will be monitored with Intracranial pressure monitoring (ICP) and pBrO2 monitoring, and will be randomized to therapy based on ICP along (control group) or therapy based on ICP in addition to pBrO2 values (treatment group). 182 participants will be enrolled at four clinical sites, the University of Texas Southwestern Medical Center/Parkland Memorial Hospital, the University of Washington/Harborview Medical Center, the University of Miami/Jackson Memorial Hospital, and the University of Pennsylvania/Hospital of the University of Pennsylvania. Functional outcome will be assessed at 6-months after injury.


Design and Outcomes

This study is a two-arm, single-blind, randomized, controlled, phase II, multi-center pilot trial of the efficacy of pBrO2 monitoring, and is designed to obtain data required for a definitive phase III study, such as efficacy of physiologic maneuvers aimed at normalizing pBrO2. 182 patients with severe TBI who require ICP monitoring will be recruited into this study at 4 clinical sites in the US (Univ. of Texas Southwestern/Parkland Memorial Hospital, Univ. of Washington/Harborview Medical Center, Univ. of Miami/Jackson Memorial Hospital, and Univ. of Pennsylvania/Hospital of the Univ. of Pennsylvania). All patients will have both ICP monitors and pBrO2 monitors inserted through the same burr hole. Half of the patients will be randomized to a treatment protocol based on both ICP and pBrO2 readings, while the control group will be randomized to a treatment protocol based only on ICP readings. The pBrO2monitors of the control arm will be masked, so that the treating physicians will be unaware of the pBrO2 information. Patients will have telephone follow-up interview to assess their level of recovery 6 months post injury, using the Glasgow Outcome Scale-Extended.

Interventions and Duration

Patients randomized to the control group will have pBrO2 implanted in a similar fashion as patients in the treatment group, but after calibration of the device, the display will be covered with opaque tape. Patients in the control will be treated with a protocol based on ICP measures only. Patients in the treatment group (both ICP and pBrO2 measures are visible) will be treated according to a protocol that incorporates both ICP and pBrO2 measures. The treatment protocols are based on current standards of care, but are described in detail to insure uniformity in treatments across the 4 study sites.

The probe will remain in place for a maximum or 5 days, until all values are normal for 48 hours, or sooner if a complication arises. If the patient has normal values, monitors will be removed after 48 hours.


Primary Objective: The prescribed treatment protocol, based on pBrO2 monitoring, results in reduction of the fraction of time that brain oxygen levels are below the critical threshold of 20 mm Hg in patients with severe traumatic brain injury.

Secondary Objectives:

- Safety hypotheses: Adverse events associated with pBrO2 monitoring are rare.

- Feasibility hypotheses: Episodes of decreased pBrO2 can be identified and treatment protocol instituted comparably across 4 clinical sites, and protocol violations will be low (<10%) and uniform across different clinical sites.

- Non-futility hypothesis: A relative risk of good outcome measured by the Glasgow Outcome Scale-Extended 6 months after injury of 2.0 is consistent with the results of this phase II study.

Study Design

Allocation: Randomized, Control: Active Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Outcomes Assessor), Primary Purpose: Treatment


Severe Traumatic Brain Injury


Management protocol based on pBrO2 and ICP values., Management protocol based on ICP values only.


University of Miami/Jackson Memorial Hospital
United States


Not yet recruiting


University of Texas Southwestern Medical Center

Results (where available)

View Results


Published on BioPortfolio: 2014-08-27T03:19:26-0400

Clinical Trials [8872 Associated Clinical Trials listed on BioPortfolio]

Heparin Management During Cardiopulmonary Bypass in Children

We propose a comparison between between our standard ACT based heparin management protocol for children undergoing CPB and a patient-specific heparin concentration-based heparin management...

Ketamine Versus Midazolam for Prehospital Agitation

This research study is being done to figure out the best approach to treatment of pre-hospital agitation. It will compare two tiered dosing treatment protocols, one ketamine-based and one ...

Implementation of a Diabetes Management Protocol as Compared to Conventional Management in a Heart Hospital's Non-Intensive Care Unit: Randomized Clinical

To asses the effectiveness of implementing a diabetes management protocol (early insulinization, avoiding use of SSI) in a hearth hospital's non-intensive care unit.

Perioperative Risk Study

The primary objective of this trial is to determine if perioperative risk stratification and risk-based, protocol-driven management leads to a reduction in the rate of death or serious com...

Feasibility and Security of a Rapid Rule-out and rule-in Troponin Protocol in the Management of NSTEMI in an Emergency Departement

Management of NSTEMI in emergency departements represent 10% of the global activity. Since the the last European Society of Cardiology recommendation the use of an 1 hour rule-in and rule-...

PubMed Articles [44544 Associated PubMed Articles listed on BioPortfolio]

A theory-based hybrid II implementation intervention to improve pain management in Swiss nursing homes: A mixed- methods study protocol.

To present a protocol for evaluating an implementation intervention to improve pain management in nursing homes by addressing behavior change of the care workers.

Inter-rater Reliability Testing of the Safety Protocol for Thirst Management.

Thirst is one of the most common and yet undertreated symptoms in the postoperative period, mainly because of the lack of safety criteria to support indication for thirst management strategies. A Safe...

An evidence based protocol for managing neonatal middle ear effusions in babies who fail newborn hearing screening.

To evaluate the prevalence of middle ear disease in infants referred for failed newborn hearing screening (NBHS) and to review patient outcomes after intervention in order to propose an evidence-based...

Comparative effectiveness of fragility fracture integrated rehabilitation management for elderly individuals after hip fracture surgery: A study protocol for a multicenter randomized controlled trial.

Although it is essential to provide comprehensive rehabilitation after hip fracture to restore the patient to preoperative physical functioning, feasibility issues remain. Here, we describe a protocol...

Combining first-principles and data modeling for the accurate prediction of the refractive index of organic polymers.

Organic materials with a high index of refraction (RI) are attracting considerable interest due to their potential application in optic and optoelectronic devices. However, most of these applications ...

Medical and Biotech [MESH] Definitions

Computer-based systems that enable management to interrogate the computer on an ad hoc basis for various kinds of information in the organization, which predict the effect of potential decisions.

An educational process that provides information and advice to individuals or families about a genetic condition that may affect them. The purpose is to help individuals make informed decisions about marriage, reproduction, and other health management issues based on information about the genetic disease, the available diagnostic tests, and management programs. Psychosocial support is usually offered.

The management of all procurement, distribution, and storage of equipment and supplies, as well as logistics management including laundry, processing of reusables, etc.

Participation of employees with management as a labor-management team, in decisions pertaining to the operational activities of the organization or industry.

Business management of medical and dental practices that may include capital financing, utilization management, and arrangement of capitation agreements with other parties.

More From BioPortfolio on "Brain Tissue Oxygen Monitoring in Traumatic Brain Injury (TBI)"

Quick Search


Relevant Topics

Anxiety Disorders
Anxiety is caused by stress. It is a natural reaction, and is beneficial in helping us deal with tense situations and pressure. It is deterimental when is becomes an excessive, irrational dread of everyday situations. The most common types of anxiety di...

Alzheimer's Disease
Of all the types of Dementia, Alzheimer's disease is the most common, affecting around 465,000 people in the UK. Neurons in the brain die, becuase  'plaques' and 'tangles' (mis-folded proteins) form in the brain. People with Al...

Searches Linking to this Trial