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Temporal trauma

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https://www.readbyqxmd.com/read/29333727/the-relation-between-maximal-voluntary-force-in-m-palmaris-longus-and-the-temporal-and-spatial-summation-of-muscle-fiber-recruitment-in-human-subjects
#1
Cécyl G Claudel, Waqas Ahmed, Vibeke S Elbrønd, Adrian P Harrison, Else Marie Bartels
This study aimed at looking at the frequency (T-score) and the amplitude (S-score) of fiber use during contraction of a forearm muscle, m. palmaris longus, as measured by acoustic myography (AMG). An additional aim was to relate the T- and S-scores to the recorded force obtained from a hand dynamometer. The hypothesis being that temporal and spatial summation of muscle fiber contraction in a given muscle during a given movement, can together describe a given obtained force. Force measurements were carried out on 12 healthy human subjects aged 19-68 years (6 men & 6 women), while their m...
January 2018: Physiological Reports
https://www.readbyqxmd.com/read/29330633/a-seven-center-examination-of-the-relationship-between-monthly-volume-and-mortality-in-trauma-a-hypothesis-generating-study
#2
Stanislaw P Stawicki, Keith Habeeb, Niels D Martin, M Shay O'Mara, James Cipolla, David C Evans, Creagh Boulger, Babak Sarani, Charles H Cook, Alok Gupta, William S Hoff, Peter G Thomas, Jeffrey M Jordan, Weidun Alan Guo, Mark J Seamon
INTRODUCTION: The relationship between trauma volumes and patient outcomes continues to be controversial, with limited data available regarding the effect of month-to-month trauma volume variability on clinical results. This study examines the relationship between monthly trauma volume variations and patient mortality at seven Level I Trauma Centers located in the Eastern United States. We hypothesized that higher monthly trauma volumes may be associated with lower corresponding mortality...
January 12, 2018: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/29316290/a-3d-bioprinted-in-situ-conjugated-co-fabricated-scaffold-for-potential-bone-tissue-engineering-applications
#3
Mduduzi N Sithole, Pradeep Kumar, Lisa C du Toit, Thashree Marimuthu, Yahya E Choonara, Viness Pillay
There is a demand for progressive approaches in bone tissue engineering to repair and regenerate bone defects resulting from trauma or disease. This investigation sought to engineer a single-step in situ conjugated polymeric scaffold employing 3D printing technology as an innovative fabricating tool. A polymeric scaffold was engineered in situ employing sodium alginate as a bio-ink which interacted with a poly(ethyleneimine) solution on bioprinting to form a polyelectrolyte complex through ionic bond formation...
January 9, 2018: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/29315178/utilization-of-nerve-integrity-monitor-for-promontory-stimulation-testing-prior-to-cochlear-implant
#4
Elizabeth A Kelly, Samuel Levine, Kristin E Gravel, Dianna L Hart, Tina Huang
OBJECTIVE: To demonstrate the feasibility of a nerve integrity monitor as a tool for promontory stimulation testing in patients with profound sensorineural hearing loss considering cochlear implantation. PATIENTS: Adult patients considered for cochlear implantation with no auditory response on audiometric testing INTERVENTION:: Promontory stimulation testing using the nerve integrity monitor. MAIN OUTCOME MEASURE: By using a facial nerve stimulator and the nerve integrity monitor, transtympanic promontory stimulation testing was performed to assess auditory nerve function and determine candidacy for cochlear implantation...
February 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29306694/evaluating-the-stability-of-dsm-5-ptsd-symptom-network-structure-in-a-national-sample-of-u-s-military-veterans
#5
Sophia H H von Stockert, Eiko I Fried, Cherie Armour, Robert H Pietrzak
BACKGROUND: Previous studies have used network models to investigate how PTSD symptoms associate with each other. However, analyses examining the degree to which these networks are stable over time, which are critical to identifying symptoms that may contribute to the chronicity of this disorder, are scarce. In the current study, we evaluated the temporal stability of DSM-5 PTSD symptom networks over a three-year period in a nationally representative sample of trauma-exposed U.S. military veterans...
December 27, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29296630/high-speed-spatial-frequency-domain-imaging-of-rat-cortex-detects-dynamic-optical-and-physiological-properties-following-cardiac-arrest-and-resuscitation
#6
Robert H Wilson, Christian Crouzet, Mohammad Torabzadeh, Afsheen Bazrafkan, Maryam H Farahabadi, Babak Jamasian, Dishant Donga, Juan Alcocer, Shuhab M Zaher, Bernard Choi, Yama Akbari, Bruce J Tromberg
Quantifying rapidly varying perturbations in cerebral tissue absorption and scattering can potentially help to characterize changes in brain function caused by ischemic trauma. We have developed a platform for rapid intrinsic signal brain optical imaging using macroscopically structured light. The device performs fast, multispectral, spatial frequency domain imaging (SFDI), detecting backscattered light from three-phase binary square-wave projected patterns, which have a much higher refresh rate than sinusoidal patterns used in conventional SFDI...
October 2017: Neurophotonics
https://www.readbyqxmd.com/read/29291176/otorhinolaryngological-manifestations-in-head-trauma-a-prospective-study-of-the-epidemiology-clinical-presentations-management-and-outcomes
#7
Adeyi A Adoga, Kenneth N Ozoilo, Andrew A Iduh, Joyce G Mugu
Background: Otorhinolaryngological injuries following head trauma may be missed, overlooked, or forgotten in the acute phase resulting in worsened management outcomes. This study aims to report the epidemiology, clinical presentations, management, and outcomes of otorhinolaryngological injuries in head trauma with a view to creating awareness for early recognition and prompt treatment. Patients and Methods: Head injured patients consecutively presenting over a 5-year period were prospectively studied for age, gender, otorhinolaryngological presentations, interventions, and outcome of interventions...
October 2017: International Journal of Critical Illness and Injury Science
https://www.readbyqxmd.com/read/29287059/microfluidics-a-high-throughput-system-for-the-assessment-of-the-endotheliopathy-of-trauma-and-the-effect-of-timing-of-plasma-administration-on-ameliorating-shock-associated-endothelial-dysfunction
#8
Lawrence N Diebel, Jonathan V Martin, David M Liberati
BACKGROUND: Early resuscitation after trauma-hemorrhagic shock (HS) with plasma rather than crystalloid may ameliorate systemic endothelial cell (EC) injury and dysfunction (endotheliopathy of trauma [EOT]). We postulated that endothelial lined microfluidic networks would be a useful platform to study the endothelial cell activation/injury under flow conditions to mimic HS. We then used the microfluidic system to further characterize the protective effects and optimal timing of plasma infusion on the development of "EOT" in our model...
December 28, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/29283104/repair-of-tegmen-tympani-defect-presenting-with-spontaneous-cerebrospinal-fluid-otorrhea-using-the-middle-cranial-fossa-approach
#9
Said Sönmez, Bayram Şahin, Beldan Polat, Şenol Çomoğlu, Kadir Serkan Orhan
Spontaneous cerebrospinal fluid (CSF) otorrhea frequently occurs without temporal bone trauma, fracture, surgery, or any identifiable causes. It is usually associated with tegmen tympani defects of the temporal bone in adults. The congenital origin theory and the arachnoid granulation theory have been accepted to explain the tegmen tympani defect. Magnetic resonance imaging (MRI) and computed tomography (CT) are used to show the defects, brain tissue, and the meninges. We recently encountered three cases of spontaneous CSF otorrhea with a defect on the tegmental plate of the temporal bone...
December 14, 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/29282438/management-of-unruptured-traumatic-middle-meningeal-artery-pseudoaneurysms-through-onyx-embolization
#10
Nicolas K Khattar, Andrew C White, Enzo M Fortuny, Rob T Hruska, Robert F James
Traumatic pseudoaneurysms of the middle meningeal artery (MMA) represent less than 1% of all intracranial aneurysms, and occur mostly in association with temporal bone fractures following head trauma. Given the unknown natural history, it is unclear whether they should be treated. We present two cases of MMA pseudoaneurysms discovered during trauma workups. The first patient is a 44-year-old male with severe traumatic brain injury (TBI) following a motor vehicle accident. The patient was found to have two right-sided middle meningeal artery pseudoaneurysms that were treated successfully with Onyx® (Medtronic, Minneapolis, MN) embolization...
October 23, 2017: Curēus
https://www.readbyqxmd.com/read/29260114/ocular-sporotrichosis-a-frequently-misdiagnosed-cause-of-granulomatous-conjunctivitis-in-epidemic-areas
#11
João Paulo M Yamagata, Fabiana B Rudolph, Maria Clara L Nobre, Leninha V Nascimento, Felipe Maurício S Sampaio, Andrea Arinelli, Dayvison F Freitas
Purpose: Sporotrichosis is a subcutaneous mycosis caused by Sporothrix sp., a dimorphic fungus. Although the cutaneous form is the most frequent form, the ocular presentation has been increasingly diagnosed in epidemic areas. We describe three cases of ocular sporotrichosis with the involvement of the ocular adnexa due to autoinoculation without trauma with successful antifungal treatment. Observations: Patient 1: A 68-year-old woman presented with granulomatous conjunctivitis of the right eye with an ulcerated nodule on the right temporal region for 5 months...
December 2017: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/29251712/prediction-of-traumatic-carotid-cavernous-sinus-fistula-via-non-contrast-ct-by-fracture-pattern-and-abnormality-of-venous-system
#12
Shih-Hsuan Mao, Tzu-Chin Lin, Chih-Hao Chen, Pang-Yun Chou, Shang-Yu Wang, Yon-Cheong Wong, Chien-Tzung Chen
BACKGROUND: Traumatic carotid-cavernous sinus fistula (tCCF) is infrequent but with high morbidity if delayed diagnosed or managed. Due to the lack of screening criteria and requirement of advanced and invasive radiological examinations, diagnosis is often delayed or underdiagnosed. METHODS: A matched case-control study with univariate and multivariate analysis was conducted to predict tCCFs. Forty-six patients diagnosed with tCCFs were included and matched with 138 patients of craniofacial trauma without tCCF as control at a ratio of 1:3...
December 14, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/29248865/prenatal-particulate-matter-exposure-and-mitochondrial-dysfunction-at-the-maternal-fetal-interface-effect-modification-by-maternal-lifetime-trauma-and-child-sex
#13
Kelly J Brunst, Marco Sanchez-Guerra, Yueh-Hsiu Mathilda Chiu, Ander Wilson, Brent A Coull, Itai Kloog, Joel Schwartz, Kasey J Brennan, Michelle Bosquet Enlow, Robert O Wright, Andrea A Baccarelli, Rosalind J Wright
BACKGROUND: Prenatal ambient fine particulate matter (PM2.5) and maternal chronic psychosocial stress have independently been linked to changes in mithochondrial DNA copy number (mtDNAcn), a marker of mitochondrial response and dysfunction. Further, overlapping research shows sex-specific effects of PM2.5 and stress on developmental outcomes. Interactions among PM2.5, maternal stress, and child sex have not been examined in this context. METHODS: We examined associations among exposure to prenatal PM2...
December 14, 2017: Environment International
https://www.readbyqxmd.com/read/29240567/theoretical-evaluation-and-experimental-validation-of-localized-therapeutic-hypothermia-application-to-preserve-residual-hearing-after-cochlear-implantation
#14
Ilmar Tamames, Curtis King, Chin-Yuh Huang, Fred F Telischi, Michael E Hoffer, Suhrud M Rajguru
OBJECTIVES: Cochlear implantation surgery has been shown to result in trauma to inner ear sensory structures, resulting in loss of residual hearing. Localized therapeutic hypothermia has been shown in clinical care to be a neuroprotective intervention. Previously, we have shown in an experimental model that localized hypothermia protects cochlear hair cells and residual hearing function against surgical and cochlear implantation trauma. Using experimental temperature measurements carried out in human cadaver temporal bones and a finite element model of the inner ear, the present study examined the temperature distribution of a custom-designed hypothermia delivery system in the human inner ear organs...
December 13, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/29237455/molecular-and-histological-effects-of-mr-guided-pulsed-focused-ultrasound-to-the-rat-heart
#15
Kee W Jang, Tsang-Wei Tu, Matthew E Nagle, Bobbi K Lewis, Scott R Burks, Joseph A Frank
BACKGROUND: Image-guided high intensity focused ultrasound has been used as an extracorporeal cardiac pacing tool and to enhance homing of stem cells to targeted tissues. However, molecular changes in the myocardium after sonication have not been widely investigated. Magnetic-resonance (MR)-guided pulsed focused ultrasound (pFUS) was targeted to the rat myocardium over a range of pressures and the microenvironmental and histological effects were evaluated over time. METHODS: Eight-to-ten-week-old Sprague-Dawley rats received T2-weighted MR images to target pFUS to the left ventricular and septum without cardiac or respiratory gating...
December 13, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29234598/investigating-structural-and-perfusion-deficits-due-to-repeated-head-trauma-in-active-professional-fighters
#16
Virendra Mishra, Karthik Sreenivasan, Sarah J Banks, Xiaowei Zhuang, Zhengshi Yang, Dietmar Cordes, Charles Bernick
Repeated head trauma experienced by active professional fighters results in various structural, functional and perfusion damage. However, whether there are common regions of structural and perfusion damage due to fighting and whether these structural and perfusion differences are associated with neuropsychological measurements in active professional fighters is still unknown. To that end, T1-weighted and pseudocontinuous arterial spin labeling MRI on a group of healthy controls and active professional fighters were acquired...
2018: NeuroImage: Clinical
https://www.readbyqxmd.com/read/29227408/the-hybrid-technical-management-of-large-and-complicated-traumatic-arteriovenous-fistula-of-preauricular-region
#17
Jian Guo, Rucai Zhan, Yong Ren, Xiangjing Meng, Rengli Liu, Guijie Li, Dong Wang, Jinlong Sun
BACKGROUND: Arteriovenous fistula (AVF) is defined as an abnormal communication between the high flow arterial system and the low flow venous network, which directly connects the arterial feeding vessels and the near draining veins without normal intervening capillary bed. Arteriovenous fistula incurs in preauricular region is exceeding rare. Most of these fistulae occur as a result of an iatrogenic injury, the volume is small, feeding and draining vessels of feeding and draining are simple, and can be cured easily...
December 7, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29224580/the-neural-correlates-of-childhood-trauma-questionnaire-scores-in-adults-a-meta-analysis-and-review-of-functional-magnetic-resonance-imaging-studies
#18
Sarah J Heany, Nynke A Groenewold, Anne Uhlmann, Shareefa Dalvie, Dan J Stein, Samantha J Brooks
Childhood maltreatment, including abuse and neglect, may have sustained effects on the integrity and functioning of the brain, alter neurophysiological responsivity later in life, and predispose individuals toward psychiatric conditions involving socioaffective disturbances. This meta-analysis aims to quantify associations between self-reported childhood maltreatment and brain function in response to socioaffective cues in adults. Seventeen functional magnetic resonance imaging studies reporting on data from 848 individuals examined with the Childhood Trauma Questionnaire were included in a meta-analysis of whole-brain findings, or a review of region of interest findings...
December 11, 2017: Development and Psychopathology
https://www.readbyqxmd.com/read/29204343/episodic-memory-after-trauma-exposure-medial-temporal-lobe-function-is-positively-related-to-re-experiencing-and-inversely-related-to-negative-affect-symptoms
#19
Jennifer S Stevens, Renuka Reddy, Ye Ji Kim, Sanne J H van Rooij, Timothy D Ely, Stephan Hamann, Kerry J Ressler, Tanja Jovanovic
Hippocampal structure is particularly sensitive to trauma and other stressors. However, previous findings linking hippocampal function with trauma-related psychopathology have been mixed. Heterogeneity in psychological responses to trauma has not been considered with respect to hippocampal function and may contribute to mixed findings. To address these issues, we examined associations between data-driven symptom dimensions and episodic memory formation, a key function of the hippocampus, in a trauma-exposed sample...
2018: NeuroImage: Clinical
https://www.readbyqxmd.com/read/29201488/left-brachiocephalic-vein-stenosis-due-to-the-insertion-of-a-temporal-right-subclavian-hemodialysis-catheter
#20
Eleni I Skandalou, Fani D Apostolidou-Kiouti, Ilias D Minasidis, Ioannis K Skandalos
Central vein stenosis/occlusion is a common well-described sequel to the placement of hemodialysis catheters in the central venous system. The precise mechanisms by which central vein stenosis occurs are not well known. Current concepts in central vein stenosis pathophysiology focus on the response to vessel injury model, emphasizing the process of trauma. A case of left brachiocephalic vein stenosis due to the insertion and function of a temporary right subclavian hemodialysis catheter is presented. The purpose of the manuscript is to emphasize that, with the introduction of a temporary subclavian hemodialysis catheter via the right subclavian vein apart from causing concurrent stenosis/infarction of the right subclavian and right brachiocephalic vein, it is also possible to cause stenosis of the left brachiocephalic vein (close to its contribution to the superior vena cava) although the catheter tip is placed in the correct anatomical position in the superior vena cava...
2017: Case Reports in Vascular Medicine
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