Database : MEDLINE
Search on : Contrecoup and Injury [Words]
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[PMID]: 29431313
[Au] Autor:Deeb M; Loberant N; Tsur A
[Ad] Address:Department of Rehabilitation, Galilee Medical Center, Nahariya, Israel.
[Ti] Title:Bilateral Frontal Hemorrhage Caused by Contrecoup Injury.
[So] Source:Isr Med Assoc J;20(2):129-130, 2018 Feb.
[Is] ISSN:1565-1088
[Cp] Country of publication:Israel
[La] Language:eng
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1802
[Cu] Class update date: 180212
[Lr] Last revision date:180212
[St] Status:In-Data-Review

  2 / 109 MEDLINE  
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[PMID]: 29394242
[Au] Autor:Brown IE; Rigor RR; Schutzman LM; Khosravi N; Chung K; Becker JA; Pivetti CD; Best GT; Chavez JC; Galante JM
[Ad] Address:Department of Surgery, University of California Davis School of Medicine, Sacramento, CA.
[Ti] Title:Pulmonary Arterial Thrombosis in a Murine Model of Blunt Thoracic Trauma.
[So] Source:Shock;, 2018 Feb 01.
[Is] ISSN:1540-0514
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:Pulmonary thromboembolic events cause significant morbidity and mortality after severe trauma. Clinically, these lesions are believed to be emboli arising secondary to deep venous thrombosis (DVT) in the lower extremities. Recently this notion has been challenged by clinical studies showing that pulmonary clots arise after trauma in the absence of DVT. This suggests that pulmonary blood clots arise in situ via de novo thrombosis. In the present study we characterize a murine weight-drop model of lateral blunt thoracic trauma. Our model demonstrates severe unilateral lung contusion injury with low (10%) mortality in absence of extrapulmonary injury, after impact with a 50 gram weight dropped from 45 cm height (657 J/m). At 24 hours after injury, immunofluorescence and histological evidence revealed early pulmonary arterial thrombosis in the form of eccentric accumulation of fibrin and CD41 positive eosinophilic proteinaceous material, on both coup and contrecoup lung lobes of injured mice, indicating early thrombotic events both within and outside of the area of primary lung injury. Our model is ideal in that lateral impact enables greater impact energy to be applied to achieve significant lung contusion without significant mortality or extrapulmonary injury, and the model has additional translational value in creating thrombosis analogous to pulmonary embolism observed clinically following blunt thoracic trauma. To our knowledge, this is the first demonstration of de novo pulmonary thrombosis in a clinically translational model of blunt thoracic trauma, and supports challenges to current assumptions about the origin of pulmonary blood clots in the wake of severe traumatic injury.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1802
[Cu] Class update date: 180202
[Lr] Last revision date:180202
[St] Status:Publisher
[do] DOI:10.1097/SHK.0000000000001109

  3 / 109 MEDLINE  
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[PMID]: 29114302
[Au] Autor:Nath PC; Mishra SS; Dhir MK; Deo RC; Behera BR; Rout SK
[Ad] Address:Department of Neurosurgery, SCB Medical College, Cuttack, Odisha, India.
[Ti] Title:Contrecoup Extradural Hematoma with Coronal Suture Diastasis.
[So] Source:Asian J Neurosurg;12(4):751-753, 2017 Oct-Dec.
[Is] ISSN:1793-5482
[Cp] Country of publication:India
[La] Language:eng
[Ab] Abstract:Extradural hematoma (EDH) generally occurs in the site of impact, that is, coup injury site. EDH is associated with fracture of skull in many a times due to direct impact. However, EDH in counter coup site is a rare occurrence. Hardly, yet, 12 cases have been reported including this case. Here, we reported a case of a 22-year-old male of contrecoup acute EDH who had sustained head injury due to fall from bike. Physical examination revealed direct impact at the left occipito-parietal region with laceration of scalp and bruise with transient loss of consciousness at the time of injury. There was no evidence of impact on the right side of his head. Computed tomography scan revealed an EDH in the right fronto-temporal region without any bone fracture on bone windows. On intraoperative exploration, it is found that there was coronal suture diastasis with small subgaleal hematoma and right fronto-temporal extradural hematoma. The evacuation of EDH was done. The patient discharged on 3 postoperative day. It can be concluded that direct impact on head causes exactly opposite hit of brain, and compensatory rebound causes a negative pressure in between the layers causing disruption of vessels and potential accumulation of blood. This mechanism mostly favors for acute subdural hematoma due to compact attachment of dura with cranium. However, in this case, diastasis of coronal suture due to transmitted force is the cause of accumulation of blood extradurally in relatively loosely adhered dura in fronto-temporal region where a potential negative pressure space is created by contrecoup injury.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1711
[Cu] Class update date: 171110
[Lr] Last revision date:171110
[St] Status:PubMed-not-MEDLINE
[do] DOI:10.4103/ajns.AJNS_12_15

  4 / 109 MEDLINE  
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[PMID]: 28682163
[Au] Autor:Vandecasteele E; Devos D; Bov T; Van Heuverswyn F
[Ad] Address:a Department of Cardiology , Ghent University Hospital , Ghent , Belgium.
[Ti] Title:Coup - contrecoup injury of the heart.
[So] Source:Acta Cardiol;72(5):562-563, 2017 Oct.
[Is] ISSN:0001-5385
[Cp] Country of publication:England
[La] Language:eng
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1707
[Cu] Class update date: 171010
[Lr] Last revision date:171010
[St] Status:In-Data-Review
[do] DOI:10.1080/00015385.2017.1307030

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[PMID]: 28627942
[Au] Autor:Kikinis Z; Muehlmann M; Pasternak O; Peled S; Kulkarni P; Ferris C; Bouix S; Rathi Y; Koerte IK; Pieper S; Yarmarkovich A; Porter CL; Kristal BS; Shenton ME
[Ad] Address:a Psychiatry Neuroimaging Laboratory, Department of Psychiatry , Brigham and Women's Hospital, Harvard Medical School , Boston , MA , USA.
[Ti] Title:Diffusion imaging of mild traumatic brain injury in the impact accelerated rodent model: A pilot study.
[So] Source:Brain Inj;31(10):1376-1381, 2017.
[Is] ISSN:1362-301X
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:PRIMARY OBJECTIVE: There is a need to understand pathologic processes of the brain following mild traumatic brain injury (mTBI). Previous studies report axonal injury and oedema in the first week after injury in a rodent model. This study aims to investigate the processes occurring 1 week after injury at the time of regeneration and degeneration using diffusion tensor imaging (DTI) in the impact acceleration rat mTBI model. RESEARCH DESIGN: Eighteen rats were subjected to impact acceleration injury, and three rats served as sham controls. Seven days post injury, DTI was acquired from fixed rat brains using a 7T scanner. Group comparison of Fractional Anisotropy (FA) values between traumatized and sham animals was performed using Tract-Based Spatial Statistics (TBSS), a method that we adapted for rats. MAIN OUTCOMES AND RESULTS: TBSS revealed white matter regions of the brain with increased FA values in the traumatized versus sham rats, localized mainly to the contrecoup region. Regions of increased FA included the pyramidal tract, the cerebral peduncle, the superior cerebellar peduncle and to a lesser extent the fibre tracts of the corpus callosum, the anterior commissure, the fimbria of the hippocampus, the fornix, the medial forebrain bundle and the optic chiasm. CONCLUSION: Seven days post injury, during the period of tissue reparation in the impact acceleration rat model of mTBI, microstructural changes to white matter can be detected using DTI.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1706
[Cu] Class update date: 171017
[Lr] Last revision date:171017
[St] Status:In-Process
[do] DOI:10.1080/02699052.2017.1318450

  6 / 109 MEDLINE  
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[PMID]: 27855610
[Au] Autor:Li F; Li H; Xiao Z; Lu R; Zhang Z; Zhu H; Ren L
[Ad] Address:Arts et Metiers, ParisTech, Paris. France.
[Ti] Title:A Review on Injury Mechanism of Intracerebral Hemorrhage in Vehicle Accidents.
[So] Source:Curr Pharm Des;23(15):2177-2192, 2017.
[Is] ISSN:1873-4286
[Cp] Country of publication:Netherlands
[La] Language:eng
[Ab] Abstract:BACKGROUND: Intracerebral hemorrhage is one of the most common injuries in vehicle accidents. The aim of this paper is to survey the injury mechanism of intracerebral hemorrhage in vehicle accidents, including contusion, subarachnoid hemorrhage (SAH), subdural hematoma (SDH) and diffuse axonal injury (DAI). METHODS: A condensed overview is given based on the published studies in biomechanical studies on intracerebral hemorrhage. Animal tests, cadaver tests, accident investigations and numerical simulation are the main method used for the mechanism studies. RESULTS: Angular velocity and acceleration can be used to predict these injuries and they are the main causation of DAI. Intracranial pressure is the main causation of coup/contrecoup contusion. Shear stress and strain contribute to the rupture of bridging veins that result in SDH, SAH. CONCLUSION: Injury mechanism of intracerebral hemorrhage in vehicle accidents is complicated that with multiple causations. In-depth works need to be carried out in mechanism studies especially for child head injuries.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1611
[Cu] Class update date: 170713
[Lr] Last revision date:170713
[St] Status:In-Process
[do] DOI:10.2174/1381612823666161118144829

  7 / 109 MEDLINE  
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[PMID]: 27855566
[Au] Autor:Salzar RS; Treichler D; Wardlaw A; Weiss G; Goeller J
[Ad] Address:1 Center for Applied Biomechanics, the University of Virginia , Charlottesville, Virginia.
[Ti] Title:Experimental Investigation of Cavitation as a Possible Damage Mechanism in Blast-Induced Traumatic Brain Injury in Post-Mortem Human Subject Heads.
[So] Source:J Neurotrauma;34(8):1589-1602, 2017 Apr 15.
[Is] ISSN:1557-9042
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:The potential of blast-induced traumatic brain injury from the mechanism of localized cavitation of the cerebrospinal fluid (CSF) is investigated. While the mechanism and criteria for non-impact blast-induced traumatic brain injury is still unknown, this study demonstrates that local cavitation in the CSF layer of the cranial volume could contribute to these injuries. The cranial contents of three post-mortem human subject (PMHS) heads were replaced with both a normal saline solution and a ballistic gel mixture with a simulated CSF layer. Each were instrumented with multiple pressure transducers and placed inside identical shock tubes at two different research facilities. Sensor data indicates that cavitation may have occurred in the PMHS models at pressure levels below those for a 50% risk of blast lung injury. This study points to skull flexion, the result of the shock wave on the front of the skull leading to a negative pressure in the contrecoup, as a possible mechanism that contributes to the onset of cavitation. Based on observation of intracranial pressure transducer data from the PMHS model, cavitation onset is thought to occur from approximately a 140 kPa head-on incident blast.
[Mh] MeSH terms primary: Blast Injuries/pathology
Brain Injuries, Traumatic/pathology
Cerebrospinal Fluid
Intracranial Pressure
Skull/pathology
[Mh] MeSH terms secundary: Aged
Blast Injuries/cerebrospinal fluid
Brain Injuries, Traumatic/cerebrospinal fluid
Cadaver
Humans
Male
Models, Anatomic
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1708
[Cu] Class update date: 170807
[Lr] Last revision date:170807
[Js] Journal subset:IM
[Da] Date of entry for processing:161119
[St] Status:MEDLINE
[do] DOI:10.1089/neu.2016.4600

  8 / 109 MEDLINE  
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[PMID]: 27139887
[Au] Autor:Benken ST; Goncharenko A
[Ad] Address:1 Department of Pharmacy Practice, University of Illinois Hospital and Health Sciences System and University of Illinois at Chicago College of Pharmacy, Chicago, IL, USA.
[Ti] Title:The Future of Intensive Care Unit Sedation: A Report of Continuous Infusion Ketamine as an Alternative Sedative Agent.
[So] Source:J Pharm Pract;30(5):576-581, 2017 Oct.
[Is] ISSN:1531-1937
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:This report describes a patient case utilizing a nontraditional sedative, continuous infusion ketamine, as an alternative agent for intensive care unit (ICU) sedation. A 27-year-old female presented for neurosurgical management of a coup contrecoup injury, left temporal fracture, epidural hemorrhage (EDH), and temporal contusion leading to sustained mechanical ventilation. The patient experienced profound agitation during mechanical ventilation and developed adverse effects with all traditional sedatives: benzodiazepines, dexmedetomidine, opioids, and propofol. Ketamine was titrated to effect and eliminated the need for other agents. This led to successful ventilator weaning, extubation, and transition of care. Given the unique side effect profile of ketamine, it is imperative that information is disseminated on potential utilization of this agent. More information is needed regarding dosing, monitoring, and long-term effects of utilizing ketamine as a continuous ICU sedative, but given the analgesia, anesthesia, and cardiopulmonary stability, future utilization of this medication for this indication seems promising.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1605
[Cu] Class update date: 170911
[Lr] Last revision date:170911
[St] Status:In-Process
[do] DOI:10.1177/0897190016646293

  9 / 109 MEDLINE  
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[PMID]: 26866282
[Au] Autor:Xu J; Shang S; Qi H; Yu G; Wang Y; Chen P
[Ad] Address:Department of Automotive Engineering, School of Transportation Science and Engineering, Beihang University, Beijing 100191, PR China; Advanced Vehicle Research Center, Beihang University, Beijing 100191, PR China; Beijing Key Laboratory for High-efficient Power Transmission and System Control of New
[Ti] Title:Simulative investigation on head injuries of electric self-balancing scooter riders subject to ground impact.
[So] Source:Accid Anal Prev;89:128-41, 2016 Apr.
[Is] ISSN:1879-2057
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:The safety performance of an electric self-balancing scooter (ESS) has recently become a main concern in preventing its further wide application as a major candidate for green transportation. Scooter riders may suffer severe brain injuries in possible vehicle crash accidents not only from contact with a windshield or bonnet but also from secondary contact with the ground. In this paper, virtual vehicle-ESS crash scenarios combined with finite element (FE) car models and multi-body scooter/human models are set up. Post-impact kinematic gestures of scooter riders under various contact conditions, such as different vehicle impact speeds, ESS moving speeds, impact angles or positions, and different human sizes, are classified and analyzed. Furthermore, head-ground impact processes are reconstructed using validated FE head models, and important parameters of contusion and laceration (e.g., coup or contrecoup pressures and Von Mises stress and the maximum shear stress) are extracted and analyzed to assess the severity of regional contusion from head-ground contact. Results show that the brain injury risk increases with vehicle speeds and ESS moving speeds and may provide fundamental knowledge to popularize the use of a helmet and the vehicle-fitted safety systems, and lay a strong foundation for the reconstruction of ESS-involved accidents. There is scope to improve safety for the use of ESS in public roads according to the analysis and conclusions.
[Mh] MeSH terms primary: Accidents, Traffic
Craniocerebral Trauma/etiology
Motorcycles
Safety
[Mh] MeSH terms secundary: Biomechanical Phenomena
Computer Simulation
Female
Humans
Male
Models, Theoretical
Risk
[Pt] Publication type:EVALUATION STUDIES; JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Entry month:1610
[Cu] Class update date: 161230
[Lr] Last revision date:161230
[Js] Journal subset:IM
[Da] Date of entry for processing:160212
[St] Status:MEDLINE

  10 / 109 MEDLINE  
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[PMID]: 26391755
[Au] Autor:Cepeda S; Gmez PA; Castao-Leon AM; Munarriz PM; Paredes I; Lagares A
[Ad] Address:Department of Neurosurgery, Hospital 12 de Octubre, Universidad Complutense de Madrid , Madrid, Spain .
[Ti] Title:Contrecoup Traumatic Intracerebral Hemorrhage: A Geometric Study of the Impact Site and Association with Hemorrhagic Progression.
[So] Source:J Neurotrauma;33(11):1034-46, 2016 Jun 01.
[Is] ISSN:1557-9042
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:Traumatic intracerebral hemorrhage (TICH) represents 13-48% of the lesions after a traumatic brain injury (TBI). The frequency of TICH-hemorrhagic progression (TICH-HP) is estimated to be approximately 38-63%. The relationship between the impact site and TICH location has been described in many autopsy-based series. This association, however, has not been consistently demonstrated since the introduction of computed tomography (CT) for studying TBI. This study aimed to determine the association between the impact site and TICH location in patients with moderate and severe TBI. We also analyzed the associations between the TICH location, the impact site, the production mechanism (coup or contrecoup), and hemorrhagic progression. We retrospectively analyzed the records of 408 patients after a moderate or severe TBI between January 2010 and November 2014. We identified 177 patients with a total of 369 TICHs. We found a statistically significant association between frontal TICHs and impact sites located on the anterior area of the head (OR 5.8, p < 0.001). The temporal TICH location was significantly associated with impact sites located on the posterior head area (OR 4.9, p < 0.001). Anterior and lateral TICHs were associated with impact sites located at less than 90 degrees (coup) (OR 1.64, p = 0.03) and more than 90 degrees (contrecoup), respectively. Factors independently associated with TICH-HP obtained through logistic regression included an initial volume of <1 cc, cisternal compression, falls, acute subdural hematoma, multiple TICHs, and contrecoup TICHs. We demonstrated a significant association between the TICH location and impact site. The contrecoup represents a risk factor independently associated with hemorrhagic progression.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1509
[Cu] Class update date: 160525
[Lr] Last revision date:160525
[Js] Journal subset:IM
[St] Status:In-Process
[do] DOI:10.1089/neu.2015.4153


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