Brief Episodes of Intracranial Hypertension and Cerebral Hypoperfusion Are Associated With Poor Functional Outcome After Severe Traumatic Brain Injury

2011 ◽  
Vol 71 (2) ◽  
pp. 364-374 ◽  
Author(s):  
Deborah M. Stein ◽  
Peter F. Hu ◽  
Megan Brenner ◽  
Kevin N. Sheth ◽  
Keng-Hao Liu ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Intracranial Hypertension ◽  
Functional Outcome ◽  
Severe Traumatic Brain Injury ◽  
Cerebral Hypoperfusion ◽  
Poor Functional Outcome

scholarly journals Intracranial Hypertension and Cerebral Hypoperfusion in Children With Severe Traumatic Brain Injury

2016 ◽  
Vol 17 (5) ◽  
pp. 444-450 ◽  
Author(s):  
Nikki Miller Ferguson ◽  
Steven L. Shein ◽  
Patrick M. Kochanek ◽  
Jim Luther ◽  
Stephen R. Wisniewski ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Intracranial Hypertension ◽  
Severe Traumatic Brain Injury ◽  
Cerebral Hypoperfusion

GCS-Pupil Score Has a Stronger Association with Mortality and Poor Functional Outcome than GCS Alone in Pediatric Severe Traumatic Brain Injury

2021 ◽  
pp. 1-8
Author(s):  
Binod Balakrishnan ◽  
Heather VanDongen-Trimmer ◽  
Irene Kim ◽  
Sheila J. Hanson ◽  
Liyun Zhang ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Functional Outcome ◽  
Cerebral Performance Category ◽  
Regression Tree ◽  
Classification And Regression Tree ◽  
Continuous Variables ◽  
Poor Functional Outcome ◽  
Severity Scores ◽  
Pupil Reactivity

<b><i>Background:</i></b> The Glasgow Coma Scale (GCS), used to classify the severity of traumatic brain injury (TBI), is associated with mortality and functional outcomes. However, GCS can be affected by sedation and neuromuscular blockade. GCS-Pupil (GCS-P) score, calculated as GCS minus Pupil Reactivity Score (PRS), was shown to better predict outcomes in a retrospective cohort of adult TBI patients. We evaluated the applicability of GCS-P to a large retrospective pediatric severe TBI (sTBI) cohort. <b><i>Methods:</i></b> Admissions to pediatric intensive care units in the Virtual Pediatric Systems (VPS, LLC) database from 2010 to 2015 with sTBI were included. We collected GCS, PRS (number of nonreactive pupils), cardiac arrest, abusive head trauma status, illness severity scores, pediatric cerebral performance category (PCPC) score, and mortality. GCS-P was calculated as GCS minus PRS. χ<sup>2</sup> or Fisher’s exact test and Mann-Whitney U test compared categorical and continuous variables, respectively. Classification and regression tree analysis identified thresholds of GCS-P and GCS along with other independent factors which were further examined using multivariable regression analysis to identify factors independently associated with mortality and unfavorable PCPC at PICU discharge. <b><i>Results:</i></b> Among the 2,682 patients included in the study, mortality was 23%, increasing from 4.7% for PRS = 0 to 80% for PRS = 2. GCS-P identified more severely injured patients with GCS-P scores 1 and 2 who had worse outcomes. GCS-P ≤ 2 had higher odds for mortality, OR = 68.4 (95% CI = 50.6–92.4) and unfavorable PCPC, OR = 17.3 (8.1, 37.0) compared to GCS ≤ 5. GCS-P ≤ 2 also had higher specificity and positive predictive value for both mortality and unfavorable PCPC compared to GCS ≤ 5. <b><i>Conclusions:</i></b> GCS-P, by incorporating pupil reactivity to GCS scoring, is more strongly associated with mortality and poor functional outcome at PICU discharge in children with sTBI.

Relationship of “dose” of intracranial hypertension to outcome in severe traumatic brain injury

2008 ◽  
Vol 109 (4) ◽  
pp. 678-684 ◽  
Author(s):  
Anne Vik ◽  
Torbjørn Nag ◽  
Oddrun Anita Fredriksli ◽  
Toril Skandsen ◽  
Kent Gøran Moen ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Intracranial Hypertension ◽  
Scale Score ◽  
Severe Traumatic Brain Injury ◽  
Injury Severity ◽  
Area Under The Curve ◽  
Term Outcome ◽  
Long Term Outcome ◽  
Scale Scores

Object It has recently been suggested that the degree of intracranial pressure (ICP) above the treatment goal can be estimated by the area under the curve (AUC) of ICP versus time in patients with severe traumatic brain injury (TBI). The objective of this study was to determine whether the calculated “ICP dose”—the ICP AUC—is related to mortality rate, outcome, and Marshall CT classification. Methods Of 135 patients (age range 1–82 years) with severe TBI treated during a 5-year period at the authors' institution, 113 patients underwent ICP monitoring (84%). Ninety-three patients with a monitoring time > 24 hours were included for analysis of ICP AUC calculated using the trapezoidal method. Computed tomography scans were assessed according to the Marshall TBI classification. Patients with Glasgow Outcome Scale scores at 6 months and > 3 years were separated into 2 groups based on outcome. Results Sixty patients (65%) had ICP values > 20 mm Hg, and 12 (13%) developed severe intracranial hypertension and died secondary to herniation. A multiple regression analysis adjusting for Glasgow Coma Scale score, age, pupillary abnormalities and Injury Severity Scale score demonstrated that the ICP AUC was a significant predictor of poor outcome at 6 months (p = 0.034) and of death (p = 0.035). However, it did not predict long-term outcome (p = 0.157). The ICP AUC was significantly higher in patients with Marshall head injury Categories 3 and 4 (24 patients) than in those with Category 2 (23 patients, p = 0.025) and Category 5 (46 patients, p = 0.021) TBIs using the worst CT scan obtained. Conclusions The authors found a significant relationship between the dose of ICP, the worst Marshall CT score, and patient outcome, suggesting that the AUC method may be useful in refining and improving the treatment of ICP in patients with TBI.

scholarly journals Experimental model of intracranial hypertension with continuous multiparametric monitoring in swine

2013 ◽  
Vol 71 (10) ◽  
pp. 802-806 ◽  
Author(s):  
Almir Ferreira de Andrade ◽  
Matheus Schmidt Soares ◽  
Gustavo Cartaxo Patriota ◽  
Alessandro Rodrigo Belon ◽  
Wellingson Silva Paiva ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Animal Model ◽  
Brain Injury ◽  
Intracranial Pressure ◽  
Intracranial Hypertension ◽  
Severe Traumatic Brain Injury ◽  
Transcranial Doppler ◽  
Porcine Model ◽  
Cerebral Oximetry ◽  
Suitable Animal Model

Objective Intracranial hypertension (IH) develops in approximately 50% of all patients with severe traumatic brain injury (TBI). Therefore, it is very important to identify a suitable animal model to study and understand the pathophysiology of refractory IH to develop effective treatments. Methods We describe a new experimental porcine model designed to simulate expansive brain hematoma causing IH. Under anesthesia, IH was simulated with a balloon insufflation. The IH variables were measured with intracranial pressure (ICP) parenchymal monitoring, epidural, cerebral oximetry, and transcranial Doppler (TCD). Results None of the animals died during the experiment. The ICP epidural showed a slower rise compared with parenchymal ICP. We found a correlation between ICP and cerebral oximetry. Conclusion The model described here seems useful to understand some of the pathophysiological characteristics of acute IH.

scholarly journals Abnormalities on Perfusion CT and Intervention for Intracranial Hypertension in Severe Traumatic Brain Injury

2020 ◽  
Vol 9 (6) ◽  
pp. 2000
Author(s):  
Shannon Cooper ◽  
Cino Bendinelli ◽  
Andrew Bivard ◽  
Mark Parsons ◽  
Zsolt J. Balogh
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Intracranial Hypertension ◽  
Severe Traumatic Brain Injury ◽  
Injury Severity ◽  
Intervention Group ◽  
Small Sample ◽  
Perfusion Computed Tomography ◽  
Group I ◽  
Second Tier

The role of invasive intracranial pressure (ICP) monitoring in patients with severe traumatic brain injury (STBI) remain unclear. Perfusion computed tomography (CTP) provides crucial information about the cerebral perfusion status in these patients. We hypothesised that CTP abnormalities would be associated with the severity of intracranial hypertension (ICH). To investigate this hypothesis, twenty-eight patients with STBI and ICP monitors were investigated with CTP within 48 h from admission. Treating teams were blind to these results. Patients were divided into five groups based on increasing intervention required to control ICH and were compared. Group I required no intervention above routine sedation, group II required a single first tier intervention, group III required multiple different first-tier interventions, group IV required second-tier medical therapy and group V required second-tier surgical therapy. Analysis of the results showed demographics and injury severity did not differ among groups. In group I no patients showed CTP abnormality, while patients in all other groups had abnormal CTP (p = 0.003). Severe ischaemia observed on CTP was associated with increasing intervention for ICH. This study, although limited by small sample size, suggests that CTP abnormalities are associated with the need to intervene for ICH. Larger scale assessment of our results is warranted to potentially avoid unnecessary invasive procedures in head injury patients.

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