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Shetty SP, Chandrappa A, Das SK, Sen KK, Kini DV. Evaluation of Sequential Head Computed Tomography in Traumatic Brain Injuries. Cureus 2022; 14:e27772. [PMID: 36106236 PMCID: PMC9449334 DOI: 10.7759/cureus.27772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/08/2022] [Indexed: 11/29/2022] Open
Abstract
Background: The grading of the severity of head trauma plays a vital role in acute patient management and planning a case-appropriate follow-up protocol. Few studies have been published regarding the Rotterdam scoring. In this study, we have established a correlation between the Rotterdam scores, need for sequential CTs, and the cumulative radiation dose. This correlation has helped develop a preliminary protocol that can be followed for patients hence bringing about better planned and efficient patient care. Materials and methods: From August 2014 to December 2020, 88 cases of traumatic head injury on whom a minimum of one sequential CT was performed, with no surgical intervention, were included and studied. Sequential head CTs of each patient were evaluated by skilled radiologists with a minimum experience of five years, all of whom were blinded to the findings of the initial and previous head CT findings. The serial head CTs were evaluated for the Rotterdam CT score (RCTS). Results: Among the patients with extradural hemorrhage (EDH), only 28.6% (8) progressed over successive CTs and 75.5% (34) of patients with subdural hemorrhage (SDH) showed significant progression over sequential CTs. Maximum number of serial CTs were obtained for cases presenting with a score of 3 (34 cases) with about three of them requiring up to a total of three CTs. However, no significant change in findings was noted on serial CTs. On the contrary, significant disease progression was noted in patients with baseline scores of 4 (76.9%) and 5 (100%), with statistical significance obtained on further analysis (P = 0.001). Conclusions: We are of the opinion that there is no additional role of sequential CT for the cases with Rotterdam score of 1 or 2 in the initial CT unless there is clinical evidence of deterioration. Rotterdam score 3 needs sequential CT after 24 hours and Rotterdam scores 4 and 5 need sequential CT after 12 hours if surgical intervention is delayed. The Rotterdam score may help predict any further need for a second CT, hence decreasing the unwanted radiation exposure.
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Howley IW, Bennett JD, Stein DM. Rapid Detection of Significant Traumatic Brain Injury Requiring Emergency Intervention. Am Surg 2020; 87:1504-1510. [PMID: 33345574 DOI: 10.1177/0003134820973355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Moderate and severe traumatic brain injuries (TBI) are a major cause of severe morbidity and mortality; rapid diagnosis and management allow secondary injury to be minimized. Traumatic brain injury is only one of many potential causes of altered mental status; head computed tomography (HCT) is used to definitively diagnose TBI. Despite its widespread use and obvious importance, interpretation of HCT images is rarely covered by formal didactics during general surgery or even acute care surgery training. The schema illustrated here may be applied in a rapid and reliable fashion to HCT images, expediting the diagnosis of clinically significant traumatic brain injury that warrants emergent medical and surgical therapies to reduce intracranial pressure. It consists of 7 normal anatomic structures (cerebrospinal fluid around the brain stem, open fourth ventricle, "baby's butt," "Mickey Mouse ears," absence of midline shift, sulci and gyri, and gray-white differentiation). These 7 features can be seen even as the CT scanner obtains images, allowing the trauma team to expedite medical management of intracranial hypertension and pursue neurosurgical consultation prior to radiologic interpretation if the features are abnormal.
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Affiliation(s)
- Isaac W Howley
- Department of Surgery, 12325University of Tennessee Health Sciences Center, Memphis, TN, USA
| | - Jonathan D Bennett
- Department of Surgery, 6886Virginia Commonwealth University, Richmond, VA, USA
| | - Deborah M Stein
- Department of Surgery, 12224University of California San Francisco School of Medicine, San Francisco, CA, USA
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Joseph B, Sadoun M, Aziz H, Tang A, Wynne JL, Pandit V, Kulvatunyou N, O'keeffe T, Friese RS, Rhee P. Repeat Head Computed Tomography in Anticoagulated Traumatic Brain Injury Patients: Still Warranted. Am Surg 2020. [DOI: 10.1177/000313481408000123] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Anticoagulation agents are proven risk factors for intracranial hemorrhage (ICH) in traumatic brain injury (TBI). The aim of our study is to describe the epidemiology of prehospital coumadin, aspirin, and Plavix (CAP) patients with ICH and evaluate the use of repeat head computed tomography (CT) in this group. We performed a retrospective study from our trauma registry. All patients with intracranial hemorrhage on initial CT with prehospital CAP therapy were included. Demographics, CT scan findings, number of repeat CT scans, progressive findings, and neuro-surgical intervention were abstracted. A comparison between prehospital CAP and no-CAP patients was done using χ2 and Mann-Whitney U test. A total of 1606 patients with blunt TBI charts were reviewed of whom 508 patients had intracranial bleeding on initial CT scan and 72 were on prehospital CAP therapy. CAP patients were older ( P < 0.001), had higher Injury Severity Score and head Abbreviated Injury Scores on admission ( P < 0.001), were more likely to present with an abnormal neurologic examination ( P = 0.004), and had higher hospital and intensive care unit lengths of stay ( P < 0.005). Eighty-four per cent of patients were on antiplatelet therapy and 27 per cent were on warfarin. The CAP patients have a threefold increase in the rate of worsening repeat head CT (26 vs 9%, P < 0.05). Prehospital CAP therapy is high risk for progression of bleeding on repeat head CT. Routine repeat head CT remains an important component in this patient population and can provide useful information.
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Affiliation(s)
- Bellal Joseph
- From the Division of Trauma, Department of Surgery, University of Arizona, Tucson, Arizona
| | - Moutamn Sadoun
- From the Division of Trauma, Department of Surgery, University of Arizona, Tucson, Arizona
| | - Hassan Aziz
- From the Division of Trauma, Department of Surgery, University of Arizona, Tucson, Arizona
| | - Andrew Tang
- From the Division of Trauma, Department of Surgery, University of Arizona, Tucson, Arizona
| | - Julie L. Wynne
- From the Division of Trauma, Department of Surgery, University of Arizona, Tucson, Arizona
| | - Viraj Pandit
- From the Division of Trauma, Department of Surgery, University of Arizona, Tucson, Arizona
| | - Narong Kulvatunyou
- From the Division of Trauma, Department of Surgery, University of Arizona, Tucson, Arizona
| | - Terence O'keeffe
- From the Division of Trauma, Department of Surgery, University of Arizona, Tucson, Arizona
| | - Randall S. Friese
- From the Division of Trauma, Department of Surgery, University of Arizona, Tucson, Arizona
| | - Peter Rhee
- From the Division of Trauma, Department of Surgery, University of Arizona, Tucson, Arizona
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D-dimer/fibrinogen ratio for the prediction of progressive hemorrhagic injury after traumatic brain injury. Clin Chim Acta 2020; 507:143-148. [PMID: 32333859 DOI: 10.1016/j.cca.2020.04.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 04/18/2020] [Accepted: 04/21/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Progressive hemorrhagic injury (PHI) greatly affects prognosis of traumatic brain injury (TBI). D-dimer/fibrinogen ratio (D/F ratio) may be a potential predictor for venous thromboembolism. This study sought to describe and evaluate any relationship between D/F ratio and PHI after TBI. METHODS This retrospective study included a cohort of 192 TBI patients. Plasma D-dimer and fibrinogen were measured, and subsequently D/F ratio was calculated. Multivariate logistic regression analysis was applied to identify predictors of PHI. Receiver operating characteristic (ROC) curve was conFig.d to analyze predictive capability for PHI. RESULTS A total of 43 patients (22.4%) experienced PHI. Both Glasgow coma scale (GCS) score (odds ratio [OR], 0.565; 95% CI, 0.464-0.689) and D/F ratio (OR, 4.026; 95% CI, 2.219-7.305) were the two independent predictor for PHI. Area under ROC curve (AUC) of D/F ratio was similar to that of GCS score (AUC, 0.816; 95% CI, 0.754-0.868 vs. AUC, 0.834; 95% CI, 0.773-0.883; P = 0.699). Moreover, D/F ratio significantly improved AUC of GCS score to 0.928 (95% CI, 0.881-0.960; P < 0.001). CONCLUSIONS D/F ratio was strongly predictive of PHI in the studied cohort and, thereby should be considered in the clinical management of TBI patients.
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Rehman L, Afzal A, Aziz HF, Akbar S, Abbas A, Rizvi R. Radiological Parameters to Predict Hemorrhagic Progression of Traumatic Contusional Brain Injury. J Neurosci Rural Pract 2019; 10:212-217. [PMID: 31001007 PMCID: PMC6454978 DOI: 10.4103/jnrp.jnrp_335_18] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Introduction Traumatic intracerebral contusion is a frequent factor culminating in death and disability, and its progression relates to unfavorable outcome. We evaluated the radiological factors associated with hemorrhagic progression of contusions (HPC). Materials and Methods Two hundred and forty-six patients were enrolled in this prospective cohort over a period of 1 year. Contusion volume was quantified using the "ABC/2" technique, whereas progression was considered as >30% increase in the initial volume. Univariate and multivariate statistics were used to examine the correlation between the risk factors of interest and HPC. Results HPC was seen in 110 (44.7%) patients. Binary logistic regression showed in the final adjusted model that multiplicity (relative risk [RR]: 2.24, 95% confidence limit [CL]: 1.00-5.48), bilateral lesions (RR: 2.99, 95% CL: 1.08-8.25), initial volume of contusion (RR: 4.96, 95% CL: 1.87-13.13), frontal location (RR: 1.42, 95% CL: 1.08-3.56), and presence of concomitant intracranial hematoma (extradural-RR: 3.90, 95% CL: 1.51-10.01, subdural-RR: 2.91, 95% CL: 1.26-6.69, and subarachnoid-RR: 2.27, 95% CL: 1.01-5.80) were significantly associated with HPC. The overall mortality was 18.7% and was almost equal among patients with and without HPC. Mortality was significantly associated with Glasgow Coma Scale on admission (adjusted RR: 12.386, 95% CL: 4.789-32.035) and presence of comorbid conditions (adjusted RR: 0.313, 95% CL: 0.114-0.860). Conclusion Initial computed tomography scan is a good predictor of high-risk group for HPC.
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Affiliation(s)
- Lal Rehman
- Department of Neurosurgery, Jinnah Postgraduate Medical Centre, Karachi, Pakistan
| | - Ali Afzal
- Department of Neurosurgery, Jinnah Postgraduate Medical Centre, Karachi, Pakistan
| | - Hafiza Fatima Aziz
- Department of Neurosurgery, Jinnah Postgraduate Medical Centre, Karachi, Pakistan
| | - Sana Akbar
- Department of Neurosurgery, Jinnah Postgraduate Medical Centre, Karachi, Pakistan
| | - Asad Abbas
- Department of Neurosurgery, Jinnah Postgraduate Medical Centre, Karachi, Pakistan
| | - Raza Rizvi
- Department of Neurosurgery, Jinnah Postgraduate Medical Centre, Karachi, Pakistan
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Wang JZ, Witiw CD, Scantlebury N, Ditkofsky N, Nathens AB, da Costa L. Clinical significance of posttraumatic intracranial hemorrhage in clinically mild brain injury: a retrospective cohort study. CMAJ Open 2019; 7:E511-E515. [PMID: 31431483 PMCID: PMC6703987 DOI: 10.9778/cmajo.20180188] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Much attention has been focused on management of severe traumatic brain injury (TBI); however, comparatively little is known about management of traumatic hemorrhage in clinically mild TBI. We aimed to clarify the role of clinical observation and repeat radiography for patients with mild TBI and abnormal findings on initial computed tomography (CT) of the head. METHODS We queried the neurotrauma database of the Ontario Trauma Registry and the Sunnybrook institutional database to identify patients with CT findings of a traumatic hemorrhage or calvarial fracture between November 2014 and December 2016. Exclusionary criteria were age less than 16 years, Glasgow Coma Scale (GCS) score less than 13, anticoagulant use, bleeding diathesis and midline shift greater than 5 mm. The primary outcome was the need for neurosurgical intervention. RESULTS A total of 607 patients were included. Most (374 [61.6%]) had a GCS score of 15; 185 (30.5%) and 48 (7.9%) had a GCS score of 14 and 13, respectively. Five patients (0.8%) required surgical intervention, all within the first 72 hours, owing to clinical deterioration with subsequently demonstrated radiographic evidence of expanding hemorrhage. Most patients (506 [83.4%]) had routine repeat imaging, without documented change in their neurologic status. INTERPRETATION The majority of patients in our cohort had repeat imaging, which did not influence surgical management, at substantial cost to the health care system. The findings suggest the need to reevaluate repeat imaging protocols for this subset of patients with TBI.
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Affiliation(s)
- Justin Z Wang
- Division of Neurosurgery (Wang, Witiw, da Costa), Department of Surgery, University of Toronto; Division of Neurosurgery (Scantlebury, da Costa), Department of Surgery, and Department of Medical Imaging (Ditkofsky), Sunnybrook Health Sciences Centre, University of Toronto; Department of Surgery (Nathens, da Costa), University of Toronto, Toronto, Ont
| | - Christopher D Witiw
- Division of Neurosurgery (Wang, Witiw, da Costa), Department of Surgery, University of Toronto; Division of Neurosurgery (Scantlebury, da Costa), Department of Surgery, and Department of Medical Imaging (Ditkofsky), Sunnybrook Health Sciences Centre, University of Toronto; Department of Surgery (Nathens, da Costa), University of Toronto, Toronto, Ont
| | - Nadia Scantlebury
- Division of Neurosurgery (Wang, Witiw, da Costa), Department of Surgery, University of Toronto; Division of Neurosurgery (Scantlebury, da Costa), Department of Surgery, and Department of Medical Imaging (Ditkofsky), Sunnybrook Health Sciences Centre, University of Toronto; Department of Surgery (Nathens, da Costa), University of Toronto, Toronto, Ont
| | - Noah Ditkofsky
- Division of Neurosurgery (Wang, Witiw, da Costa), Department of Surgery, University of Toronto; Division of Neurosurgery (Scantlebury, da Costa), Department of Surgery, and Department of Medical Imaging (Ditkofsky), Sunnybrook Health Sciences Centre, University of Toronto; Department of Surgery (Nathens, da Costa), University of Toronto, Toronto, Ont
| | - Avery B Nathens
- Division of Neurosurgery (Wang, Witiw, da Costa), Department of Surgery, University of Toronto; Division of Neurosurgery (Scantlebury, da Costa), Department of Surgery, and Department of Medical Imaging (Ditkofsky), Sunnybrook Health Sciences Centre, University of Toronto; Department of Surgery (Nathens, da Costa), University of Toronto, Toronto, Ont
| | - Leodante da Costa
- Division of Neurosurgery (Wang, Witiw, da Costa), Department of Surgery, University of Toronto; Division of Neurosurgery (Scantlebury, da Costa), Department of Surgery, and Department of Medical Imaging (Ditkofsky), Sunnybrook Health Sciences Centre, University of Toronto; Department of Surgery (Nathens, da Costa), University of Toronto, Toronto, Ont.
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Chan DYC, Tsang ACO, Li LF, Cheng KKF, Tsang FCP, Taw BBT, Pu JKS, Ho WWS, Lui WM, Leung GKK. Improving Survival with Tranexamic Acid in Cerebral Contusions or Traumatic Subarachnoid Hemorrhage: Univariate and Multivariate Analysis of Independent Factors Associated with Lower Mortality. World Neurosurg 2019; 125:e665-e670. [PMID: 30721773 DOI: 10.1016/j.wneu.2019.01.145] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 01/23/2019] [Accepted: 01/24/2019] [Indexed: 10/27/2022]
Abstract
BACKGROUND Fall with head injury is a pervasive challenge, especially in the aging population. Contributing factors for mortality include the development of cerebral contusions and delayed traumatic intracerebral hematoma. Currently, there is no established specific treatment for these conditions. OBJECT This study aimed to investigate the impact of independent factors on the mortality rate of traumatic brain injury with contusions or traumatic subarachnoid hemorrhage. METHODS Data were collected from consecutive patients admitted for cerebral contusions or traumatic subarachnoid hemorrhage at an academic trauma center from 2010 to 2016. The primary outcome was the 30-day mortality rate. Independent factors for analysis included patient factors and treatment modalities. Univariate and multivariate analyses were conducted to identify independent factors related to mortality. Secondary outcomes included thromboembolic complication rates associated with the use of tranexamic acid. RESULTS In total, 651 consecutive patients were identified. For the patient factors, low Glasgow Coma Scale on admission, history of renal impairment, and use of warfarin were identified as independent factors associated with higher mortality from univariate and multivariate analyses. For the treatment modalities, univariate analysis identified tranexamic acid as an independent factor associated with lower mortality (P = 0.021). Thromboembolic events were comparable in patients with or without tranexamic acid. CONCLUSION Tranexamic acid was identified by univariate analysis as an independent factor associated with lower mortality in cerebral contusions or traumatic subarachnoid hemorrhage. Further prospective studies are needed to validate this finding.
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Affiliation(s)
- David Yuen Chung Chan
- Division of Neurosurgery, Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Queen Mary Hospital, Pokfulam, Hong Kong
| | - Anderson Chun On Tsang
- Division of Neurosurgery, Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Queen Mary Hospital, Pokfulam, Hong Kong
| | - Lai Fung Li
- Division of Neurosurgery, Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Queen Mary Hospital, Pokfulam, Hong Kong
| | - Kevin King Fai Cheng
- Division of Neurosurgery, Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Queen Mary Hospital, Pokfulam, Hong Kong
| | - Frederick Chun Pong Tsang
- Division of Neurosurgery, Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Queen Mary Hospital, Pokfulam, Hong Kong
| | - Benedict Beng Teck Taw
- Division of Neurosurgery, Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Queen Mary Hospital, Pokfulam, Hong Kong
| | - Jenny Kan Suen Pu
- Division of Neurosurgery, Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Queen Mary Hospital, Pokfulam, Hong Kong
| | - Wilson Wai Shing Ho
- Division of Neurosurgery, Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Queen Mary Hospital, Pokfulam, Hong Kong
| | - Wai Man Lui
- Division of Neurosurgery, Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Queen Mary Hospital, Pokfulam, Hong Kong
| | - Gilberto Ka Kit Leung
- Division of Neurosurgery, Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Queen Mary Hospital, Pokfulam, Hong Kong.
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Kassi AAY, Mahavadi AK, Clavijo A, Caliz D, Lee SW, Ahmed AI, Yokobori S, Hu Z, Spurlock MS, Wasserman JM, Rivera KN, Nodal S, Powell HR, Di L, Torres R, Leung LY, Rubiano AM, Bullock RM, Gajavelli S. Enduring Neuroprotective Effect of Subacute Neural Stem Cell Transplantation After Penetrating TBI. Front Neurol 2019; 9:1097. [PMID: 30719019 PMCID: PMC6348935 DOI: 10.3389/fneur.2018.01097] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 12/03/2018] [Indexed: 12/13/2022] Open
Abstract
Traumatic brain injury (TBI) is the largest cause of death and disability of persons under 45 years old, worldwide. Independent of the distribution, outcomes such as disability are associated with huge societal costs. The heterogeneity of TBI and its complicated biological response have helped clarify the limitations of current pharmacological approaches to TBI management. Five decades of effort have made some strides in reducing TBI mortality but little progress has been made to mitigate TBI-induced disability. Lessons learned from the failure of numerous randomized clinical trials and the inability to scale up results from single center clinical trials with neuroprotective agents led to the formation of organizations such as the Neurological Emergencies Treatment Trials (NETT) Network, and international collaborative comparative effectiveness research (CER) to re-orient TBI clinical research. With initiatives such as TRACK-TBI, generating rich and comprehensive human datasets with demographic, clinical, genomic, proteomic, imaging, and detailed outcome data across multiple time points has become the focus of the field in the United States (US). In addition, government institutions such as the US Department of Defense are investing in groups such as Operation Brain Trauma Therapy (OBTT), a multicenter, pre-clinical drug-screening consortium to address the barriers in translation. The consensus from such efforts including “The Lancet Neurology Commission” and current literature is that unmitigated cell death processes, incomplete debris clearance, aberrant neurotoxic immune, and glia cell response induce progressive tissue loss and spatiotemporal magnification of primary TBI. Our analysis suggests that the focus of neuroprotection research needs to shift from protecting dying and injured neurons at acute time points to modulating the aberrant glial response in sub-acute and chronic time points. One unexpected agent with neuroprotective properties that shows promise is transplantation of neural stem cells. In this review we present (i) a short survey of TBI epidemiology and summary of current care, (ii) findings of past neuroprotective clinical trials and possible reasons for failure based upon insights from human and preclinical TBI pathophysiology studies, including our group's inflammation-centered approach, (iii) the unmet need of TBI and unproven treatments and lastly, (iv) present evidence to support the rationale for sub-acute neural stem cell therapy to mediate enduring neuroprotection.
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Affiliation(s)
- Anelia A Y Kassi
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Anil K Mahavadi
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Angelica Clavijo
- Neurosurgery Service, INUB-MEDITECH Research Group, El Bosque University, Bogotá, CO, United States
| | - Daniela Caliz
- Neurosurgery Service, INUB-MEDITECH Research Group, El Bosque University, Bogotá, CO, United States
| | - Stephanie W Lee
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Aminul I Ahmed
- Wessex Neurological Centre, University Hospitals Southampton, Southampton, United Kingdom
| | - Shoji Yokobori
- Department of Emergency and Critical Care Medicine, Nippon Medical School, Tokyo, Japan
| | - Zhen Hu
- Department of Neurosurgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Markus S Spurlock
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Joseph M Wasserman
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Karla N Rivera
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Samuel Nodal
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Henry R Powell
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Long Di
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Rolando Torres
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Lai Yee Leung
- Branch of Brain Trauma Neuroprotection and Neurorestoration, Center for Military Psychiatry and Neuroscience, Walter Reed Army Institute of Research, Silver Spring, MD, United States.,Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD, United States
| | - Andres Mariano Rubiano
- Neurosurgery Service, INUB-MEDITECH Research Group, El Bosque University, Bogotá, CO, United States
| | - Ross M Bullock
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Shyam Gajavelli
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
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Marincowitz C, Lecky FE, Townend W, Borakati A, Fabbri A, Sheldon TA. The Risk of Deterioration in GCS13-15 Patients with Traumatic Brain Injury Identified by Computed Tomography Imaging: A Systematic Review and Meta-Analysis. J Neurotrauma 2018; 35:703-718. [PMID: 29324173 PMCID: PMC5831640 DOI: 10.1089/neu.2017.5259] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
The optimal management of mild traumatic brain injury (TBI) patients with injuries identified by computed tomography (CT) brain scan is unclear. Some guidelines recommend hospital admission for an observation period of at least 24 h. Others argue that selected lower-risk patients can be discharged from the Emergency Department (ED). The objective of our review and meta-analysis was to estimate the risk of death, neurosurgical intervention, and clinical deterioration in mild TBI patients with injuries identified by CT brain scan, and assess which patient factors affect the risk of these outcomes. A systematic review and meta-analysis adhering to PRISMA standards of protocol and reporting were conducted. Study selection was performed by two independent reviewers. Meta-analysis using a random effects model was undertaken to estimate pooled risks for: clinical deterioration, neurosurgical intervention, and death. Meta-regression was used to explore between-study variation in outcome estimates using study population characteristics. Forty-nine primary studies and five reviews were identified that met the inclusion criteria. The estimated pooled risk for the outcomes of interest were: clinical deterioration 11.7% (95% confidence interval [CI]: 11.7%-15.8%), neurosurgical intervention 3.5% (95% CI: 2.2%-4.9%), and death 1.4% (95% CI: 0.8%-2.2%). Twenty-one studies presented within-study estimates of the effect of patient factors. Meta-regression of study characteristics and pooling of within-study estimates of risk factor effect found the following factors significantly affected the risk for adverse outcomes: age, initial Glasgow Coma Scale (GCS), type of injury, and anti-coagulation. The generalizability of many studies was limited due to population selection. Mild TBI patients with injuries identified by CT brain scan have a small but clinically important risk for serious adverse outcomes. This review has identified several prognostic factors; research is needed to derive and validate a usable clinical decision rule so that low-risk patients can be safely discharged from the ED.
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Affiliation(s)
- Carl Marincowitz
- Hull York Medical School, University of Hull, Hull, United Kingdom
| | - Fiona E. Lecky
- School of Health and Related Research, University of Sheffield, Sheffield, United Kingdom
| | - William Townend
- Emergency Department, Hull and East Yorkshire NHS Trust, Hull, United Kingdom
| | - Aditya Borakati
- Hull York Medical School, University of Hull, Hull, United Kingdom
| | - Andrea Fabbri
- Emergency Unit, Presidio Ospedaliero Morgagni-Pierantoni, AUSL della Romagna, Forlì, Italy
| | - Trevor A. Sheldon
- Department of Health Sciences, University of York, Alcuin Research Resource Center, Heslington, York, United Kingdom
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Öğrenci A, Koban O, Ekşi M, Yaman O, Dalbayrak S. The Necessity of Follow-Up Brain Computed-Tomography Scans: Is It the Pathology Itself Or Our Fear that We Should Overcome? Open Access Maced J Med Sci 2017; 5:740-743. [PMID: 29104682 PMCID: PMC5661711 DOI: 10.3889/oamjms.2017.157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 06/28/2017] [Accepted: 06/30/2017] [Indexed: 11/17/2022] Open
Abstract
AIM: This study aimed to make a retrospective analysis of pediatric patients with head traumas that were admitted to one hospital setting and to make an analysis of the patients for whom follow-up CT scans were obtained. METHODS: Pediatric head trauma cases were retrospectively retrieved from the hospital’s electronic database. Patients’ charts, CT scans and surgical notes were evaluated by one of the authors. Repeat CT scans for operated patients were excluded from the total number of repeat CT scans. RESULTS: One thousand one hundred and thirty-eight pediatric patients were admitted to the clinic due to head traumas. Brain CT scan was requested in 863 patients (76%) in the cohort. Follow-up brain CT scans were obtained in 102 patients. Additional abnormal finding requiring surgical intervention was observed in only one patient (isolated 4th ventricle hematoma) on the control CTs (1% of repeat CT scans), who developed obstructive hydrocephalus. None of the patients with no more than 1 cm epidural hematoma in its widest dimension and repeat CT scans obtained 1.5 hours after the trauma necessitated surgery. CONCLUSION: Follow-up CT scans changed clinical approach in only one patient in the present series. When ordering CT scan in the follow-up of pediatric traumas, benefits and harms should be weighted based upon time interval from trauma onset to initial CT scan and underlying pathology.
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Affiliation(s)
- Ahmet Öğrenci
- Neurospinal Academy, Neurosurgery, Kurtköy mah, Ankara Cad. 390/3, Pendik, Istanbul 34955, Turkey
| | - Orkun Koban
- Neurospinal Academy, Neurosurgery, Kurtköy mah, Ankara Cad. 390/3, Pendik, Istanbul 34955, Turkey
| | - Murat Ekşi
- Antalya Egitim ve Arastirma Hastanesi, Neurosurgery, Antalya, Turkey
| | - Onur Yaman
- Koc Universitesi Tip Fakultesi, Neurosurgery, Istanbul, Turkey
| | - Sedat Dalbayrak
- Neurospinal Academy, Neurosurgery, Kurtköy mah, Ankara Cad. 390/3, Pendik, Istanbul 34955, Turkey
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11
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FVIIa prevents the progressive hemorrhaging of a brain contusion by protecting microvessels via formation of the TF–FVIIa–FXa complex. Neuroscience 2017; 348:114-125. [DOI: 10.1016/j.neuroscience.2017.02.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Revised: 01/20/2017] [Accepted: 02/12/2017] [Indexed: 11/20/2022]
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12
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Wan X, Fan T, Wang S, Zhang S, Liu S, Yang H, Shu K, Lei T. Progressive hemorrhagic injury in patients with traumatic intracerebral hemorrhage: characteristics, risk factors and impact on management. Acta Neurochir (Wien) 2017; 159:227-235. [PMID: 27943076 DOI: 10.1007/s00701-016-3043-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 11/24/2016] [Indexed: 11/29/2022]
Abstract
BACKGROUND Progressive hemorrhagic injury (PHI) is a common occurrence in clinical practice; however, how PHI affects clinical management remains unclear. We attempt to evaluate the characteristics and risk factors of PHI and also investigate how PHI influences clinical management in traumatic intracerebral hemorrhage (TICH) patients. METHODS This retrospective study included a cohort of 181 patients with TICH who initially underwent conservative treatment and they were dichotomized into a PHI group and a non-PHI group. Clinical data were reviewed for comparison. Multivariate logistic regression analysis was applied to identify predictors of PHI and delayed operation. RESULTS Overall, 68 patients (37.6%) experienced PHI and 27 (14.9%) patients required delayed surgery. In the PHI group, 17 patients needed late operation; in the non-PHI group, 10 patients received decompressive craniectomy. Compared to patients with non-PHI, the PHI group was more likely to require late operation (P = 0.005, 25.0 vs 8.8%), which took place within 48 h (P = 0.01, 70.6 vs 30%). Multivariate logistic regression identified past medical history of hypertension (odds ratio [OR] = 4.56; 95% confidence interval [CI] = 2.04-10.45), elevated international normalized ratio (INR) (OR = 20.93; 95% CI 7.72-71.73) and linear bone fracture (OR = 2.11; 95% CI = 1.15-3.91) as independent risk factors for PHI. Hematoma volume of initial CT scan >5 mL (OR = 3.80; 95% CI = 1.79-8.44), linear bone fracture (OR = 3.21; 95% CI = 1.47-7.53) and PHI (OR = 3.49; 95% CI = 1.63-7.77) were found to be independently associated with delayed operation. CONCLUSIONS Past medical history of hypertension, elevated INR and linear bone fracture were predictors for PHI. Additionally, the latter was strongly predictive of delayed operation in the studied cohort.
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Affiliation(s)
- Xueyan Wan
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430030, Wuhan, China
| | - Ting Fan
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430030, Wuhan, China
| | - Sheng Wang
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430030, Wuhan, China.
| | - Suojun Zhang
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430030, Wuhan, China
| | - Shengwen Liu
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430030, Wuhan, China
| | - Hongkuan Yang
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430030, Wuhan, China
| | - Kai Shu
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430030, Wuhan, China
| | - Ting Lei
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430030, Wuhan, China
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13
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Rosa M, da Rocha AJ, Maia ACM, Saade N, Veiga JCE, Romero JM. Contusion Contrast Extravasation Depicted on Multidetector Computed Tomography Angiography Predicts Growth and Mortality in Traumatic Brain Contusion. J Neurotrauma 2015. [PMID: 26214242 DOI: 10.1089/neu.2015.4062] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Traumatic brain injury (TBI) is the main cause of death in trauma victims and causes high rates of disability and neurological sequelae. Approximately 38-65% of traumatic brain contusions (TBC) demonstrate hemorrhagic expansion on serial computed tomography (CT) scans. Thus far, however, no single variable can accurately predict the hemorrhage expansion of a TBC. Our purpose was to evaluate contrast extravasation (CE) as a predictor of expansion, mortality, and poor outcome in TBC in a Brazilian cohort. After Institutional Review Board approval, we used multidetector CT angiography (MDCTA) to study 121 consecutive patients (106 men, 87.6%) with ages varying from 10 to 85 years. Informed consent was obtained from all subjects. The clinical and imaging findings were correlated with the findings on the initial MDCTA using either the Fisher exact test or Student t test and a multivariate logistic regression model. Of the persons who presented CE in TBC, 21.8% died (in-hospital mortality), whereas in the absence of this sign, the mortality rate was 7.6% (p = 0.014). In addition, expansion of the hemorrhagic component of the TBC was detected in 61.1% of the CE-positive patients, whereas expansion was only observed in 10% of the CE-negative patients (p < 0.001). Poor outcome was observed in 24.2% of the patients in the CE-negative group, but in the presence of CE, 72.7% evolved with poor outcome (p < 0.001). The CE was a strong independent predictor of expansion, poor outcome, and increased risk of in-hospital mortality in our series of patients with TBC.
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Affiliation(s)
- Marcos Rosa
- 1 Section of Neuroradiology , Santa Casa de Misericórdia de São Paulo, São Paulo SP, Brazil .,2 Section of Radiology, Federal University of Espírito Santo , Vitória ES, Brazil
| | - Antônio José da Rocha
- 1 Section of Neuroradiology , Santa Casa de Misericórdia de São Paulo, São Paulo SP, Brazil
| | | | - Nelson Saade
- 3 Division of Neurosurgery , Santa Casa de Misericórdia de São Paulo, São Paulo SP, Brazil
| | | | - Javier M Romero
- 4 Division of Neuroradiology, Massachusetts General Hospital , Harvard Medical School, Boston, Massachusetts
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Kim WH, Lim DJ, Kim SH, Ha SK, Choi JI, Kim SD. Is Routine Repeated Head CT Necessary for All Pediatric Traumatic Brain Injury? J Korean Neurosurg Soc 2015; 58:125-30. [PMID: 26361528 PMCID: PMC4564744 DOI: 10.3340/jkns.2015.58.2.125] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 06/22/2015] [Accepted: 06/23/2015] [Indexed: 12/21/2022] Open
Abstract
Objective Repeated computed tomography (CT) follow up for traumatic brain injury (TBI) patients is often performed. But there is debate the indication for repeated CT scans, especially in pediatric patients. Purpose of our study is to find risk factors of progression on repeated CT and delayed surgical intervention based on the repeated head CT. Methods Between March, 2007 and December, 2013, 269 pediatric patients (age 0-18 years) had admitted to our hospital for head trauma. Patients were classified into 8 subgroups according to mechanisms of injury. Types, amount of hemorrhage and amount changes on repeated CT were analyzed as well as initial Glasgow Coma Scale (GCS) scores. Results Within our cohort of 269 patients, 174 patients received repeat CT. There were progression in the amount of hemorrhage in 48 (27.6%) patients. Among various hemorrhage types, epidural hemorrhage (EDH) more than 10 cc measured in initial CT was found to be at risk of delayed surgical intervention significantly after routine repeated CT with or without neurological deterioration than other types of hemorrhage. Based on initial GCS, severe head trauma group (GCS 3-8) was at risk of delayed surgical intervention after routine repeated CT without change of clinical neurologic status. Conclusion We suggest that the patients with EDH more than 10 cc or GCS below 9 should receive repeated head CT even though absence of significant clinical deterioration.
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Affiliation(s)
- Won-Hyung Kim
- Department of Neurosurgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Korea
| | - Dong-Jun Lim
- Department of Neurosurgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Korea
| | - Se-Hoon Kim
- Department of Neurosurgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Korea
| | - Sung-Kon Ha
- Department of Neurosurgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Korea
| | - Jong-Il Choi
- Department of Neurosurgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Korea
| | - Sang-Dae Kim
- Department of Neurosurgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Korea
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15
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Cepeda S, Gómez PA, Castaño-Leon AM, Martínez-Pérez R, Munarriz PM, Lagares A. Traumatic Intracerebral Hemorrhage: Risk Factors Associated with Progression. J Neurotrauma 2015; 32:1246-53. [PMID: 25752340 DOI: 10.1089/neu.2014.3808] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The increase in the volume of a traumatic intracerebral hemorrhage (TICH) is a widely studied phenomenon that has a direct impact on the prognosis of patients. The objective of this study was to identify the risk factors associated with the progression of TICH. We retrospectively analyzed the records of 1970 adult patients >15 years of age who were consecutively admitted after sustaining a closed severe traumatic brain injury (TBI) between January 1987 and November 2013 at a single center. Beginning in 2007, patients with moderate TBIs were also included. A total of 782 patients exhibited one or more TICH on the initial CT scan, and met the selection criteria. The main outcome variable was the presence or absence of progression of the TICH. Univariate and multivariate statistical analyses were performed. Factors independently associated with the growth of TICH obtained through logistic regression included the following: an initial volume <5 cc (odds ratio [OR] 2.42, p<0.001), cisternal compression (OR 1.95, p<0.001), decompressive craniectomy (OR 2.18, p<0.001), age (mean 37.67 vs. 42.95 years; OR 1.01, p<0.001), falls as mechanism of trauma (OR 1.72, p=0.001), multiple TICHs (OR 1.56, p=0.007), and hypoxia (OR 1.56, p=0.02). TICH progression occurred with a frequency of 63% in our study. We showed that there was a correlation between TICH growth and some variables, such as multiple TICHs, a lower initial volume, acute subdural hematoma, cisternal compression, older patient age, hypoxia, falls, and decompressive craniectomy.
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Affiliation(s)
- Santiago Cepeda
- Department of Neurosurgery, Hospital 12 de Octubre, Universidad Complutense de Madrid , Madrid, Spain
| | - Pedro A Gómez
- Department of Neurosurgery, Hospital 12 de Octubre, Universidad Complutense de Madrid , Madrid, Spain
| | - Ana María Castaño-Leon
- Department of Neurosurgery, Hospital 12 de Octubre, Universidad Complutense de Madrid , Madrid, Spain
| | - Rafael Martínez-Pérez
- Department of Neurosurgery, Hospital 12 de Octubre, Universidad Complutense de Madrid , Madrid, Spain
| | - Pablo M Munarriz
- Department of Neurosurgery, Hospital 12 de Octubre, Universidad Complutense de Madrid , Madrid, Spain
| | - Alfonso Lagares
- Department of Neurosurgery, Hospital 12 de Octubre, Universidad Complutense de Madrid , Madrid, Spain
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16
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Schueller G, Scaglione M, Linsenmaier U, Schueller-Weidekamm C, Andreoli C, De Vargas Macciucca M, Gualdi G. The key role of the radiologist in the management of polytrauma patients: indications for MDCT imaging in emergency radiology. Radiol Med 2015; 120:641-54. [PMID: 25634793 DOI: 10.1007/s11547-015-0500-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Accepted: 01/13/2015] [Indexed: 12/15/2022]
Abstract
Trauma causes greater losses of life years and it is the most common cause of death for people under the age of 45. Time is one of the most relevant factors for the survival of injured patients, particularly the time elapsed from trauma until the resuscitation procedures. As a member of the trauma team, the radiologist contributes to the rapid diagnosis of traumatic disorders, with appropriate imaging modalities. Based on the evidence, the most appropriate diagnostic tool for severe/multiple trauma is computed tomography (CT). With the advent of multidetector CT (MDCT), radiologists are able to more effectively characterize life-threatening traumatic disorders within a few seconds in stable or stabilized patients. Considering the diagnostic potential of MDCT, conventional radiographs could be virtually abandoned in the diagnostic algorithms for adult polytraumatized patients. The radiologist helps to facilitate triage and to assess the optimal individual treatment for polytrauma patients, thus contributing to the improvement of patient outcomes. In this article, the indications for MDCT in the polytrauma setting are discussed.
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17
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Kim L, Schuster J, Holena DN, Sims CA, Levine J, Pascual JL. Early initiation of prophylactic heparin in severe traumatic brain injury is associated with accelerated improvement on brain imaging. J Emerg Trauma Shock 2014; 7:141-8. [PMID: 25114421 PMCID: PMC4126111 DOI: 10.4103/0974-2700.136846] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Accepted: 10/21/2013] [Indexed: 11/19/2022] Open
Abstract
Background: Venous thromboembolic prophylaxis (VTEp) is often delayed following traumatic brain injury (TBI), yet animal data suggest that it may reduce cerebral inflammation and improve cognitive recovery. We hypothesized that earlier VTEp initiation in severe TBI patients would result in more rapid neurologic recovery and reduced progression of brain injury on radiologic imaging. Study Design: Medical charts of severe TBI patients admitted to a level 1 trauma center in 2009-2010 were queried for admission Glasgow Coma Scale (GCS), head Abbreviated Injury Scale, Injury Severity Score (ISS), osmotherapy use, emergency neurosurgery, and delay to VTEp initiation. Progression (+1 = better, 0 = no change, −1 = worse) of brain injury on head CTs and neurologic exam (by bedside MD, nurse) was collected from patient charts. Head CT scan Marshall scores were calculated from the initial head CT results. Results: A total of 22, 34, and 19 patients received VTEp at early (<3 days), intermediate (3-5 days), and late (>5 days) time intervals, respectively. Clinical and radiologic brain injury characteristics on admission were similar among the three groups (P > 0.05), but ISS was greatest in the early group (P < 0.05). Initial head CT Marshall scores were similar in early and late groups. The slowest progression of brain injury on repeated head CT scans was in the early VTEp group up to 10 days after admission. Conclusion: Early initiation of prophylactic heparin in severe TBI is not associated with deterioration neurologic exam and may result in less progression of injury on brain imaging. Possible neuroprotective effects of heparin in humans need further investigation.
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Affiliation(s)
- Luke Kim
- Department of Surgery, Division of Traumatology, Surgical Critical Care and Emergency Surgery, Philadelphia, USA
| | - James Schuster
- Department of Neurosurgery, Perelman School of Medicine at the University of Pennsylvania, Pennsylvania, Philadelphia, USA
| | - Daniel N Holena
- Department of Surgery, Division of Traumatology, Surgical Critical Care and Emergency Surgery, Philadelphia, USA
| | - Carrie A Sims
- Department of Surgery, Division of Traumatology, Surgical Critical Care and Emergency Surgery, Philadelphia, USA
| | - Joshua Levine
- Department of Neurology, Perelman School of Medicine at the University of Pennsylvania, Pennsylvania, Philadelphia, USA
| | - Jose L Pascual
- Department of Surgery, Division of Traumatology, Surgical Critical Care and Emergency Surgery, Philadelphia, USA
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18
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Abstract
Coagulopathy is often observed after traumatic brain injury (TBI), but the pathogenic mechanisms of this phenomenon remain elusive. Brain injury is the leading cause of trauma deaths, and the development of coagulopathy after TBI is associated with increased morbidity and mortality in these patients. The coagulopathy after TBI comprises a hypocoagulable and a hypercoagulable state with hemorrhagic and thrombotic phenotypes that are both associated with worse outcome. Some theories of its pathogenesis include massive release of tissue factor, altered protein C homeostasis, microparticle upregulation, and platelet hyperactivity. This article aims to examine the coagulopathy associated with blunt head injury, to review its effect on progression of hemorrhagic injury, and to discuss the possible relevant pathophysiological mechanisms.
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Affiliation(s)
- Monisha A Kumar
- Departments of Neurology, Neurosurgery, and Anesthesiology and Critical Care, Perelman School of Medicine, Hospital of the University of Pennsylvania, 3 West Gates Building, 3400 Spruce Street, Philadelphia, PA, 19104, USA,
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19
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Iaccarino C, Schiavi P, Picetti E, Goldoni M, Cerasti D, Caspani M, Servadei F. Patients with brain contusions: predictors of outcome and relationship between radiological and clinical evolution. J Neurosurg 2014; 120:908-18. [PMID: 24506250 DOI: 10.3171/2013.12.jns131090] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECT Traumatic parenchymal mass lesions are common sequelae of traumatic brain injuries (TBIs). They occur in up to 8.2% of all TBI cases and 13%-35% of severe TBI cases, and they account for up to 20% of surgical intracranial lesions. Controversy exists concerning the association between radiological and clinical evolution of brain contusions. The aim of this study was to identify predictors of unfavorable outcome, analyze the evolution of brain contusions, and evaluate specific indications for surgery. METHODS In a retrospective, multicenter study, patients with brain contusions were identified in separate patient cohorts from 11 hospitals over a 4-year period (2008-2011). Data on clinical parameters and course of the contusion were collected. Radiological parameters were registered by using CT images taken at the time of hospital admission and at subsequent follow-up times. Patients who underwent surgical procedures were identified. Outcomes were evaluated 6 months after trauma by using the Glasgow Outcome Scale-Extended. RESULTS Multivariate analysis revealed the following reliable predictors of unfavorable outcome: 1) increased patient age, 2) lower Glasgow Coma Scale score at first evaluation, 3) clinical deterioration in the first hours after trauma, and 4) onset or increase of midline shift on follow-up CT images. Further multivariate analysis identified the following as statistically significant predictors of clinical deterioration during the first hours after trauma: 1) onset of or increase in midline shift on follow-up CT images (p < 0.001) and 2) increased effacement of basal cisterns on follow-up CT images (p < 0.001). CONCLUSIONS In TBI patients with cerebral contusion, the onset of clinical deterioration is predictably associated with the onset or increase of midline shift and worsened status of basal cisterns but not with hematoma or edema volume increase. A combination of clinical deterioration and increased midline shift/basal cistern compression is the most reasonable indicator for surgery.
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Affiliation(s)
- Corrado Iaccarino
- Arcispedale Santa Maria Nuova-Istituto di Ricovero e Cura a Carattere Scientifico, Reggio Emilia; and Neurosurgery-Neurotraumatology Unit
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20
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Reljic T, Mahony H, Djulbegovic B, Etchason J, Paxton H, Flores M, Kumar A. Value of repeat head computed tomography after traumatic brain injury: systematic review and meta-analysis. J Neurotrauma 2013; 31:78-98. [PMID: 23914924 DOI: 10.1089/neu.2013.2873] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Diagnosis and management of traumatic brain injury (TBI) is crucial to improve patient outcomes. While initial head computed tomography (CT) scan is the optimum tool for quick and accurate detection of intracranial hemorrhage, the guidelines on use of repeat CT differ among institutions. Three systematic reviews have been conducted on a similar topic; none have performed a comprehensive meta-analysis of all studies. Search of Medline, the Cochrane Library database, and Clinicaltrials.gov , and a hand search of conference abstracts and references for all completed studies reporting data on change in management following repeat CT was conducted. Two authors reviewed all studies and extracted data using a standardized form. A proportional meta-analysis was conducted using the random-effects model for outcomes related to any change in management following repeat CT. Any change in management included intracranial intervention, change in intracranial pressure monitoring, and/or administration of drug therapy. Search results yielded 6982 references. In all, 41 studies enrolling 10,501 patients were included. Change in management following repeat CT was reported in 13 prospective and 28 retrospective studies and yielded a pooled proportion of 11.4% (95% confidence interval [CI] 5.9-18.4) and 9.6% (95% CI 6.5-13.2), respectively. In a subgroup analysis of mild TBI patients (Glasgow Coma Scale score 13 to 15), five prospective and nine retrospective studies reported on change in management following repeat CT with the pooled proportion across prospective studies at 2.3% (95% CI 0.3-6.3) and across retrospective studies at 3.9% (95% CI 2.3-5.7), respectively. The evidence suggests that repeat CT in patients with TBI results in a change in management for only a minority of patients. Better designed studies are needed to address the issue of the value of repeat CT in the management of TBI.
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Affiliation(s)
- Tea Reljic
- 1 Center for Evidence Based Medicine and Health Outcomes Research, University of South Florida , Tampa, Florida
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Kurland DB, Tosun C, Pampori A, Karimy JK, Caffes NM, Gerzanich V, Simard JM. Glibenclamide for the treatment of acute CNS injury. Pharmaceuticals (Basel) 2013; 6:1287-303. [PMID: 24275850 PMCID: PMC3817601 DOI: 10.3390/ph6101287] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Revised: 09/17/2013] [Accepted: 09/23/2013] [Indexed: 12/22/2022] Open
Abstract
First introduced into clinical practice in 1969, glibenclamide (US adopted name, glyburide) is known best for its use in the treatment of diabetes mellitus type 2, where it is used to promote the release of insulin by blocking pancreatic KATP [sulfonylurea receptor 1 (Sur1)-Kir6.2] channels. During the last decade, glibenclamide has received renewed attention due to its pleiotropic protective effects in acute CNS injury. Acting via inhibition of the recently characterized Sur1-Trpm4 channel (formerly, the Sur1-regulated NCCa-ATP channel) and, in some cases, via brain KATP channels, glibenclamide has been shown to be beneficial in several clinically relevant rodent models of ischemic and hemorrhagic stroke, traumatic brain injury, spinal cord injury, neonatal encephalopathy of prematurity, and metastatic brain tumor. Glibenclamide acts on microvessels to reduce edema formation and secondary hemorrhage, it inhibits necrotic cell death, it exerts potent anti-inflammatory effects and it promotes neurogenesis—all via inhibition of Sur1. Two clinical trials, one in TBI and one in stroke, currently are underway. These recent findings, which implicate Sur1 in a number of acute pathological conditions involving the CNS, present new opportunities to use glibenclamide, a well-known, safe pharmaceutical agent, for medical conditions that heretofore had few or no treatment options.
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Affiliation(s)
- David B. Kurland
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD 21201, USA; E-Mails: (D.B.K.); (C.T.); (A.P.); (J.K.K.); (N.M.C.); (V.G.)
| | - Cigdem Tosun
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD 21201, USA; E-Mails: (D.B.K.); (C.T.); (A.P.); (J.K.K.); (N.M.C.); (V.G.)
| | - Adam Pampori
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD 21201, USA; E-Mails: (D.B.K.); (C.T.); (A.P.); (J.K.K.); (N.M.C.); (V.G.)
| | - Jason K. Karimy
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD 21201, USA; E-Mails: (D.B.K.); (C.T.); (A.P.); (J.K.K.); (N.M.C.); (V.G.)
| | - Nicholas M. Caffes
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD 21201, USA; E-Mails: (D.B.K.); (C.T.); (A.P.); (J.K.K.); (N.M.C.); (V.G.)
| | - Volodymyr Gerzanich
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD 21201, USA; E-Mails: (D.B.K.); (C.T.); (A.P.); (J.K.K.); (N.M.C.); (V.G.)
| | - J. Marc Simard
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD 21201, USA; E-Mails: (D.B.K.); (C.T.); (A.P.); (J.K.K.); (N.M.C.); (V.G.)
- Department of Pathology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Department of Physiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +1-410-328-0850; Fax: +1-410-328-0124
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Safety and efficacy of pharmacologic thromboprophylaxis following blunt head injury: a systematic review. J Trauma Acute Care Surg 2013; 75:642-56. [PMID: 24064878 DOI: 10.1097/ta.0b013e3182a12a45] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Patients with blunt head injury are at high risk of venous thromboembolism. However, pharmacologic thromboprophylaxis (PTP) may cause progression of intracranial hemorrhage, and clinicians must often weigh up the risks and benefits. This review aimed to determine whether adding PTP to mechanical prophylaxis confers net benefit or harm and the optimal timing, dose, and agent for PTP in patients with blunt head injury. METHODS We searched MEDLINE, EMBASE, The Cochrane Library Central Register of Controlled Trials (CENTRAL), and www.clinicaltrials.gov on April 24, 2013, to identify controlled studies and ongoing trials that assessed the efficacy or safety of thromboprophylaxis interventions in the early management of head-injured patients. Studies were classified based on types of interventions and comparisons, and the quality of included studies was assessed using Cochrane risk-of-bias tool and the Newcastle-Ottawa Quality Assessment Scale. We intended to undertake a meta-analysis if studies were sufficiently similar. RESULTS Sixteen studies met the inclusion criteria, including four randomized controlled trials. At least two randomized controlled trials were at high risk of bias owing to inadequate randomization and concealment of allocation, and observational studies were potentially confounded by substantial differences between comparison groups. Heterogeneity of included studies precluded meta-analysis. Results were mixed, with some studies supporting and others refuting addition of PTP to mechanical interventions. Little evidence was available about dose or choice of agent. The safety and efficacy of early PTP in patients without early progression of hemorrhage is unclear. CONCLUSION There is currently insufficient evidence to guide thromboprophylaxis in patients with blunt head injury. Standardized definitions and outcome measurements would facilitate comparison of outcomes across future studies. Studies in mixed populations should report head-injured specific subgroup data. Future randomized controlled trials should investigate the efficacy and safety of early pharmacologic prophylaxis in addition to mechanical intervention. LEVEL OF EVIDENCE Systematic review, level IV.
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Repeat head computed tomography after minimal brain injury identifies the need for craniotomy in the absence of neurologic change. J Trauma Acute Care Surg 2013; 74:967-73 ; discussion 973-5. [PMID: 23511133 DOI: 10.1097/ta.0b013e3182877fed] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND In this era of cost containment, the value of routine repeat head computed tomography (CT) in patients with mild TBI (mTBI) and no interval neurologic change has been challenged. The purpose of this study was to test the hypothesis that routine repeat head CT provides critical information after mTBI even with no neurologic change. METHODS From January 1996 to May 2010, records from all patients admitted to our Level I trauma center with an arrival Glasgow Coma Scale (GCS) score of 13 to 15 and at least one head CT were retrospectively reviewed. RESULTS In 360 patients with mTBI and positive initial head CT finding, the most common abnormalities were subarachnoid hemorrhage (64%), intraparenchymal hemorrhage (57%), and subdural hemorrhage (40%). Scans were repeated in 8 ± 6 hours; 11% were recalled, 59% remained stable, but 30% showed injury progression. Those patients with worsening repeat head CT finding had higher Injury Severity Score (ISS), were more likely to be intubated and require craniotomy, had longer stay, and had higher mortality (all p < 0.001). On multiple logistic regression, altered GCS score (odds ratio, 3.1-4.0), ISS (odds ratio, 1.1), and presence of mass effect (odds ratio, 2.0) were independently associated with worsening repeat head CT finding. In patients receiving a neurosurgical operative intervention, 32% to 59% had no clinical decline before the worsening repeat CT finding. CONCLUSION After mTBI, worsening of repeat head CT finding is seen in a third of patients and is associated with worse outcomes. A substantial fraction of patients who require operative intervention will have no clinical changes in the first 8 hours, supporting the value of repeat head CT within this time frame. LEVEL OF EVIDENCE Care management study, level III.
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Fabbri A, Servadei F, Marchesini G, Bronzoni C, Montesi D, Arietta L. Antiplatelet therapy and the outcome of subjects with intracranial injury: the Italian SIMEU study. Crit Care 2013; 17:R53. [PMID: 23514619 PMCID: PMC3733424 DOI: 10.1186/cc12575] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Revised: 02/08/2013] [Accepted: 03/15/2013] [Indexed: 12/31/2022] Open
Abstract
INTRODUCTION Pre-injury antithrombotic therapy might influence the outcome of subjects with head injuries and positive computed tomography (CT) scans. We aimed to determine the potential risk of pre-injury antiplatelet drug use on short- and long-term outcome of head injured subjects admitted to emergency departments (EDs) in Italy for extended observation. METHODS A total of 1,558 adult subjects with mild, moderate and severe head injury admitted to Italian EDs were studied. In multivariable logistic regression analyses, the short-term outcome was assessed by an evaluation of head CT scan at 6 to 24 hours after trauma and the long-term outcome by the Glasgow outcome scale (GOS) at six months. RESULTS Head CT scan comparisons showed that 201 subjects (12.9%) worsened. The risk of worsening was increased two fold by the use of antiplatelet drugs (106, 19.7% treated versus 95, 9.3% untreated; relative risk (RR) 2.09, 95% CI 1.63 to 2.71). The risk was particularly high in subjects on clopidogrel (RR 5.76, 95% CI 3.88 to 8.54), independent of the association with aspirin. By logistic regression, 5 of 14 items were independently associated with worsening (Glasgow coma scale (GCS), Marshall category, antiplatelet therapy, intraventricular hemorrhage, number of lesions). After six months, only 4 of 14 items were predictors of unfavorable outcome (GOS 1 to 3) (GCS score, Marshall category, age in decades, intracerebral hemorrhage/contusion). The risk increased by 50% in the group treated with antiplatelet therapy (RR 1.58, 95% CI 1.28 to 1.95; P<0.001). CONCLUSIONS Antithrombotic therapy (in particular clopidogrel) is a risk factor for both short-term and long-term unfavorable outcome in subjects with head injury, increasing the risk of progression and death, permanent vegetative state and severe disability.
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Affiliation(s)
- Andrea Fabbri
- Dipartimento Emergenza, Presidio Ospedaliero Morgagni-Pierantoni, Azienda
Unità Sanitaria Locale di Forlì, via Forlanini 34, 40121, Forlì,
Italy
| | - Franco Servadei
- Dipartimento Emergenza-Urgenza, Struttura Complessa di Neurochirurgia -
Neurotraumatologia, Azienda Ospedaliera Universitaria di Parma, viale Gramsci 14,
43126, Parma, Italy
| | - Giulio Marchesini
- Dipartimento di Scienze Mediche e Chirurgiche, Università di Bologna, via
Massarenti 9, 40138, Bologna, Italy
| | - Carolina Bronzoni
- Dipartimento Emergenza-Urgenza, Struttura Complessa di Neurochirurgia -
Neurotraumatologia, Azienda Ospedaliera Universitaria di Parma, viale Gramsci 14,
43126, Parma, Italy
| | - Danilo Montesi
- Dipartimento di Informatica, Scienza e Ingegneria, Università di Bologna, Via
Mura Anteo Zamboni 7, 40127, Bologna, Italy
| | - Luca Arietta
- Dipartimento di Informatica, Scienza e Ingegneria, Università di Bologna, Via
Mura Anteo Zamboni 7, 40127, Bologna, Italy
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Almenawer SA, Bogza I, Yarascavitch B, Sne N, Farrokhyar F, Murty N, Reddy K. The Value of Scheduled Repeat Cranial Computed Tomography After Mild Head Injury. Neurosurgery 2013; 72:56-62; discussion 63-4. [DOI: 10.1227/neu.0b013e318276f899] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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The temporal course of intracranial haemorrhage progression: how long is observation necessary? Injury 2012; 43:2122-5. [PMID: 22658418 DOI: 10.1016/j.injury.2012.04.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2012] [Revised: 03/02/2012] [Accepted: 04/13/2012] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Patients with mild traumatic brain injury (MTBI) and intracranial haemorrhage (ICH) are hospitalized and monitored for progression of injury. The timeframe for ICH progression is unknown, and so the optimal duration and location of observation are generally discretionary. The goal of this study was to examine the temporal course of injury progression and establish a timeframe for when haemorrhage ceases. METHODS We performed a retrospective review of all adult patients (age ≥ 18) with MTBI (GCS ≥ 13) and ICH admitted to a level 1 trauma centre over a consecutive 36 month period, who underwent a minimum of 2 cranial CT scans (HCT) within 48 h from ED presentation prior to any neurosurgical intervention (NSI). Patients with a history of NSI or nontraumatic cerebral lesions were excluded. Data collected include demographics and the number, timing and findings of serial HCT scans. RESULTS A total of 341 patients met inclusion criteria. The timing for cessation of bleeding could not be confirmed in 37 patients (11 had NSI after 2nd HCT, 1 died of coagulopathy prior to NSI and 25 had no repeat HCT that could confirm the cessation of bleeding). Of the remaining 304 ICH, 96% stopped progressing by 24h and 99% by 48 h. The remaining 1% stopped by 72 h. Of all 341 ICH, 236 (69%) showed no progression after initial HCT, indicating that haemorrhage had stopped by that time (1.2h (SD ± 1.1h) from admission). None required a NSI. CONCLUSION Almost all ICH in MTBI stop progressing within the first 24h post injury, supporting a 24-h observational period. In fact, over 3/4s of ICH has stopped by the time of the initial HCT (<2h from arrival). This suggests that early repeat HCT may identify those ICH no longer progressing, and possibly avoid unnecessary admission and prolonged observation in those patients not requiring admission for post-TBI symptom management. Prospective data are needed to evaluate this proposed paradigm change in the management of MTBI.
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A prospective evaluation of the use of routine repeat cranial CT scans in patients with intracranial hemorrhage and GCS score of 13 to 15. J Trauma Acute Care Surg 2012; 73:685-8. [PMID: 22929497 DOI: 10.1097/ta.0b013e318265ccd9] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Scheduled repeat head computed tomography after mild traumatic brain injury has been shown to have limited use for predicting the need for an intervention. We hypothesized that repeat computed tomography in persons with intracranial hemorrhage and a Glasgow Coma Scale (GCS) score of 13 to 15, without clinical progression of neurologic symptoms, does not impact the need for neurosurgical intervention or discharge GCS scores. METHODS This prospective cohort study followed all patients presenting to our urban Level I trauma center with intracranial hemorrhage and a GCS score of 13 to 15 from February 2010 to December 2010. Subjects were divided into two groups: those in whom repeat CT scans were performed routinely (ROUTINE) and those in whom they were performed selectively (SELECTIVE) based on changes in clinical examination. CT scanning decisions were made at the discretion of the neurosurgical service attending physician. RESULTS One hundred forty-five patients met the inclusion criteria (ROUTINE, n = 92; SELECTIVE, n = 53). Group demographics, including age, sex, and presenting GCS score were not significantly different. Of SELECTIVE patients, six (11%) required a repeat head computed tomography for a neurologic change, with one having a radiographic progression of hemorrhage (16%) versus 26 (28%) of 92 in the ROUTINE group showing a radiographic progression. No patient in either group required medical or neurosurgical intervention based on repeat scan. The number of CT scans performed differed between the two groups (three scans in ROUTINE vs. one scan in SELECTIVE, p < 0.001), as did the intensive care unit (2 days vs. 1 day, p < 0.001) and hospital (5 days vs. 2 days, p < 0.001) lengths of stay. Discharge GCS score was similar for both groups (15 vs. 15, p = 0.37). One death occurred in the SELECTIVE group, unrelated to intracranial findings. The negative predictive value of a repeat CT scan leading to neurosurgical intervention with no change in clinical examination was 100% for both groups. CONCLUSION A practice of selective repeat head CT scans in patients with traumatic brain injury admitted with a GCS score of 13 to 15 decreases use of the test and is associated with decreased hospital length of stay, without impacting discharge GCS scores. LEVEL OF EVIDENCE Diagnostic study, level II.
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Menditto VG, Polonara S, Lucci M, Pomponio G, Gabrielli A. In reply. Ann Emerg Med 2012. [DOI: 10.1016/j.annemergmed.2012.03.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Is low-molecular-weight heparin safe for venous thromboembolism prophylaxis in patients with traumatic brain injury? A Western Trauma Association multicenter study. J Trauma Acute Care Surg 2012; 73:625-8. [DOI: 10.1097/ta.0b013e318265cab9] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Kurland D, Hong C, Aarabi B, Gerzanich V, Simard JM. Hemorrhagic progression of a contusion after traumatic brain injury: a review. J Neurotrauma 2011; 29:19-31. [PMID: 21988198 DOI: 10.1089/neu.2011.2122] [Citation(s) in RCA: 211] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The magnitude of damage to cerebral tissues following head trauma is determined by the primary injury, caused by the kinetic energy delivered at the time of impact, plus numerous secondary injury responses that almost inevitably worsen the primary injury. When head trauma results in a cerebral contusion, the hemorrhagic lesion often progresses during the first several hours after impact, either expanding or developing new, non-contiguous hemorrhagic lesions, a phenomenon termed hemorrhagic progression of a contusion (HPC). Because a hemorrhagic contusion marks tissues with essentially total unrecoverable loss of function, and because blood is one of the most toxic substances to which the brain can be exposed, HPC is one of the most severe types of secondary injury encountered following traumatic brain injury (TBI). Historically, HPC has been attributed to continued bleeding of microvessels fractured at the time of primary injury. This concept has given rise to the notion that continued bleeding might be due to overt or latent coagulopathy, prompting attempts to normalize coagulation with agents such as recombinant factor VIIa. Recently, a novel mechanism was postulated to account for HPC that involves delayed, progressive microvascular failure initiated by the impact. Here we review the topic of HPC, we examine data relevant to the concept of a coagulopathy, and we detail emerging data elucidating the mechanism of progressive microvascular failure that predisposes to HPC after head trauma.
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Affiliation(s)
- David Kurland
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland 21201-1595, USA
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Therapeutic Targeting of Astrocytes After Traumatic Brain Injury. Transl Stroke Res 2011; 2:633-42. [DOI: 10.1007/s12975-011-0129-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Revised: 10/21/2011] [Accepted: 10/25/2011] [Indexed: 10/15/2022]
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Simard JM, Kahle KT, Gerzanich V. Molecular mechanisms of microvascular failure in central nervous system injury--synergistic roles of NKCC1 and SUR1/TRPM4. J Neurosurg 2010; 113:622-9. [PMID: 20035575 DOI: 10.3171/2009.11.jns081052] [Citation(s) in RCA: 105] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Microvascular failure largely underlies the damaging secondary events that accompany traumatic brain injury (TBI). Changes in capillary permeability result in the extravasation of extracellular fluid, inflammatory cells, and blood, thereby producing cerebral edema, inflammation, and progressive secondary hemorrhage (PSH). Recent work in rat models of TBI and stroke have implicated 2 ion transport proteins expressed in brain endothelial cells as critical mediators of edema formation: the constitutively expressed Na(+)-K(+)-2Cl(-) cotransporter, NKCC1, and the trauma/ischemia-induced SUR1-regulated NC(Ca-ATP) (SUR1/TRPM4) channel. Whereas NKCC1 function requires adenosine 5'-triphosphate (ATP), activation of SUR1/TRPM4 occurs only after ATP depletion. This opposite dependence on intracellular ATP levels implies that one or the other mechanism will activate/deactivate as ATP concentrations rise and fall during periods of ischemia/reperfusion, resulting in continuous edema formation regardless of cellular energy status. Moreover, with critical ATP depletion, sustained opening of SUR1/TRPM4 channels results in the oncotic death of endothelial cells, leading to capillary fragmentation and PSH. Bumetanide and glibenclamide are 2 well-characterized, safe, FDA-approved drugs that inhibit NKCC1 and the SUR1/TRPM4 channel, respectively. When used alone, these drugs have provided documented beneficial effects in animal models of TBI- and ischemiaassociated cerebral edema and PSH. Given the mechanistic and temporal differences by which NKCC1 and the SUR1/TRPM4 channel contribute to the pathophysiological mechanisms of these events, combination therapy with bumetanide and glibenclamide may yield critical synergy in preventing injury-associated capillary failure.
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Affiliation(s)
- J Marc Simard
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland 21201-1595, USA.
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Khan S, Khan N, Masood S, Rana AQ. Evolution of traumatic intracerebral hemorrhage captured with CT imaging: report of a case and the role of serial CT scans. Emerg Radiol 2010; 17:493-6. [PMID: 20645118 DOI: 10.1007/s10140-010-0891-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2010] [Accepted: 06/29/2010] [Indexed: 11/25/2022]
Abstract
Delayed enlargement of a traumatic cerebral contusion can occur subsequent to an initial CT scan, and this can lead to neurological deterioration, brain herniation, and death. Herein, we describe the case of a 76-year-old male who experienced an intracerebral hemorrhage subsequent to a fall and whose injury worsened over time. We summarize the current recommendations in the literature for when to initiate follow-up imaging in patients with traumatic head injury, the risk factors for progression, and the role of close clinical monitoring and serial imaging in managing such patients. Finally, we illustrate how these recommendations were applied in our case.
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Affiliation(s)
- Sofia Khan
- Undergraduate Medical Education, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
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Abstract
Traumatic brain injury represents a substantial public health problem for which clinicians have limited treatment avenues. Traditional FDG-positron emission tomography (PET) brain imaging has provided unique insights into this disease including prognostic information. With the advent and implementation of novel tracers as well as improvement in instrumentation, molecular brain imaging using PET can further illustrate traumatic brain injury pathophysiology and point to novel treatment strategies.
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Affiliation(s)
- Jacob G Dubroff
- Division of Nuclear Medicine, Department of Radiology, Hospital of the University of Pennsylvania, Room 110, Donner Building, Philadelphia, PA 19104, USA
| | - Andrew B Newberg
- Division of Nuclear Medicine, Department of Radiology, Hospital of the University of Pennsylvania, Room 110, Donner Building, Philadelphia, PA 19104, USA.
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Swanson EW, Mascitelli J, Stiefel M, MacMurtrie E, Levine J, Kofke WA, Yang W, Le Roux PD. Patient Transport and Brain Oxygen in Comatose Patients. Neurosurgery 2010; 66:925-31; discussion 931-2. [DOI: 10.1227/01.neu.0000368543.59446.a4] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Abstract
OBJECTIVE
Transport of critically ill intensive care unit patients may be hazardous. We examined whether brain oxygen (brain tissue oxygen partial pressure [PbtO2]) is influenced by transport to and from a follow-up head computed tomography (transport head computed tomography [tHCT]) scan.
METHODS
Forty-five patients (24 men, 21 women; Glasgow Coma Scale score ≤8; mean age, 47.3 ± 19.0 years) who had a traumatic brain injury (n = 26) or subarachnoid hemorrhage (n = 19) were retrospectively identified from a prospective observational cohort of PbtO2 monitoring in a neurosurgical intensive care unit at a university-based level I trauma center. PbtO2, intracranial pressure, and cerebral perfusion pressure were monitored continuously and compared during the 3 hours before and after 100 tHCT scans.
RESULTS
The mean PbtO2 before and after the tHCT scans for all 100 scans was 37.9 ± 19.8 mm Hg and 33.9 ± 17.2 mm Hg, respectively (P = .0001). A decrease in PbtO2 (>5%) occurred after 54 tHCTs (54%) and in 36 patients (80%). In instances in which a decrease occurred, the average decrease in mean, minimum, and maximum PbtO2 was 23.6%, 29%, and 18.1%, respectively. This decrease was greater when PbtO2 was compromised (<25 mm Hg) before tHCT. An episode of brain hypoxia (<15 mm Hg) was identified in the 3 hours before tHCT in 9 and after tHCT in 19 instances. On average, an episode of brain hypoxia was 46.6 ± 16.0 (standard error) minutes longer after tHCT than before tHCT (P = .008). Multivariate analysis suggests that changes in lung function (PaO2/fraction of inspired oxygen [FiO2] ratio) may account for the reduced PbtO2 after tHCT (parameter estimate 0.45, 95% confidence interval: 0.024–0.871; P = .04).
CONCLUSION
These data suggest that transport to and from the intensive care unit may adversely affect PbtO2. This deleterious effect is greater when PbtO2 is already compromised and may be associated with lung function.
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Affiliation(s)
- Edward W. Swanson
- Department of Neurosurgery, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Justin Mascitelli
- Department of Neurosurgery, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Michael Stiefel
- Department of Neurosurgery, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Eileen MacMurtrie
- Department of Neurosurgery, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Joshua Levine
- Departments of Neurosurgery, Neurology, and Anesthesiology and Critical Care, University of Pennsylvania, Philadelphia, Pennsylvania
| | - W. Andrew Kofke
- Departments of Neurosurgery, Neurology, and Anesthesiology and Critical Care, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Wei Yang
- Department of Biostatistics and Epidemiology, Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Peter D. Le Roux
- Department of Neurosurgery, University of Pennsylvania, Philadelphia, Pennsylvania
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Simard JM, Kilbourne M, Tsymbalyuk O, Tosun C, Caridi J, Ivanova S, Keledjian K, Bochicchio G, Gerzanich V. Key role of sulfonylurea receptor 1 in progressive secondary hemorrhage after brain contusion. J Neurotrauma 2010; 26:2257-67. [PMID: 19604096 DOI: 10.1089/neu.2009.1021] [Citation(s) in RCA: 111] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
An important but poorly understood feature of traumatic brain injury (TBI) is the clinically serious problem of spatiotemporal progression ("blossoming") of a hemorrhagic contusion, a phenomenon we term progressive secondary hemorrhage (PSH). Molecular mechanisms of PSH are unknown and efforts to reduce it by promoting coagulation have met with equivocal results. We hypothesized that PSH might be due to upregulation and activation of sulfonylurea receptor 1 (SUR1)-regulated NC(Ca-ATP) channels in capillary endothelial cells, predisposing to oncotic death of endothelial cells and catastrophic failure of capillary integrity. Anesthetized adult male rats underwent left parietal craniectomy for induction of a focal cortical contusion. The regulatory subunit of the channel, SUR1, was prominently upregulated in capillaries of penumbral tissues surrounding the contusion. In untreated rats, PSH was characterized by progressive enlargement of the contusion deep into the site of cortical impact, including corpus callosum, hippocampus, and thalamus, by progressive accumulation of extravasated blood, with a doubling of the volume during the first 12 h after injury, and by capillary fragmentation in penumbral tissues. Block of SUR1 using low-dose (non-hypoglycemogenic) glibenclamide largely eliminated PSH and capillary fragmentation, and was associated with a significant reduction in the size of the necrotic lesion and in preservation of neurobehavioral function. Antisense oligodeoxynucleotide against SUR1, administered after injury, reduced both SUR1 expression and PSH, consistent with a requirement for transcriptional upregulation of SUR1. Our findings provide novel insights into molecular mechanisms responsible for PSH associated with hemorrhagic contusions, and point to SUR1 as a potential therapeutic target in TBI.
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Affiliation(s)
- J Marc Simard
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA.
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Laalo JP, Kurki TJ, Sonninen PH, Tenovuo OS. Reliability of Diagnosis of Traumatic Brain Injury by Computed Tomography in the Acute Phase. J Neurotrauma 2009; 26:2169-78. [DOI: 10.1089/neu.2009.1011] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Jussi P. Laalo
- Medical Imaging Centre, Turku University Central Hospital, Turku, Finland
| | | | - Pirkko H. Sonninen
- Medical Imaging Centre, Turku University Central Hospital, Turku, Finland
- Pulssi Medical Imaging Centre, Turku, Finland
| | - Olli S. Tenovuo
- Department of Neurology, Turku University Central Hospital, Turku, Finland
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Abstract
Decompressive craniectomy is widely used to treat intracranial hypertension following traumatic brain injury (TBI). Two randomized trials are currently underway to further evaluate the effectiveness of decompressive craniectomy for TBI. Complications of this procedure have major ramifications on the risk-benefit balance in decision-making during evaluation of potential surgical candidates. To further evaluate the complications of decompressive craniectomy, a review of the literature was performed following a detailed search of PubMed between 1980 and 2009. The author restricted her study to literature pertaining to decompressive craniectomy for patients with TBI. An understanding of the pathophysiological events that accompany removal of a large piece of skull bone provides a foundation for understanding many of the complications associated with decompressive craniectomy. The author determined that decompressive craniectomy is not a simple, straightforward operation without adverse effects. Rather, numerous complications may arise, and they do so in a sequential fashion at specific time points following surgical decompression. Expansion of contusions, new subdural and epidural hematomas contralateral to the decompressed hemisphere, and external cerebral herniation typify the early perioperative complications of decompressive craniectomy for TBI. Within the 1st week following decompression, CSF circulation derangements manifest commonly as subdural hygromas. Paradoxical herniation following lumbar puncture in the setting of a large skull defect is a rare, potentially fatal complication that can be prevented and treated if recognized early. During the later phases of recovery, patients may develop a new cognitive, neurological, or psychological deficit termed syndrome of the trephined. In the longer term, a persistent vegetative state is the most devastating of outcomes of decompressive craniectomy. The risk of complications following decompressive craniectomy is weighed against the life-threatening circumstances under which this surgery is performed. Ongoing trials will define whether this balance supports surgical decompression as a first-line treatment for TBI.
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Traumatic brain injury: a comparison of inpatient functional outcomes between children and adults. J Head Trauma Rehabil 2008; 23:209-19. [PMID: 18650765 DOI: 10.1097/01.htr.0000327253.61751.29] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVES To examine age-related differences in functional outcomes following traumatic brain injury. PARTICIPANTS AND PROCEDURE: Seventy-six patients admitted to a pediatric acute rehabilitation hospital were compared with 2548 adult patients in the National Institute on Disability and Rehabilitation Research-funded traumatic brain injury model systems national database. MAIN OUTCOME MEASURES Functional Independence Measure totals during inpatient rehabilitation. RESULTS Increasing age was significantly associated with improved outcome in children and with poorer outcome in adults. CONCLUSION The relationship between age and functional outcome is different within different age groups (pediatric vs adult), and the effect of moderating variables differs by age group.
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Flint AC, Manley GT, Gean AD, Hemphill JC, Rosenthal G. Post-Operative Expansion of Hemorrhagic Contusions after Unilateral Decompressive Hemicraniectomy in Severe Traumatic Brain Injury. J Neurotrauma 2008; 25:503-12. [DOI: 10.1089/neu.2007.0442] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Alexander C. Flint
- Department of Neurology, Neurovascular and Neurocritical Care Service, University of California, San Francisco, California
- Department of UCSF Brain and Spinal Injury Center, University of California, San Francisco, California
| | - Geoffrey T. Manley
- Department of Neurological Surgery, University of California, San Francisco, California
- Department of UCSF Brain and Spinal Injury Center, University of California, San Francisco, California
| | - Alisa D. Gean
- Department of Radiology, University of California, San Francisco, California
- Department of UCSF Brain and Spinal Injury Center, University of California, San Francisco, California
| | - J. Claude Hemphill
- Department of Neurology, Neurovascular and Neurocritical Care Service, University of California, San Francisco, California
- Department of UCSF Brain and Spinal Injury Center, University of California, San Francisco, California
| | - Guy Rosenthal
- Department of Neurological Surgery, University of California, San Francisco, California
- Department of UCSF Brain and Spinal Injury Center, University of California, San Francisco, California
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