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Oxygen and head injury

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https://www.readbyqxmd.com/read/28790515/transient-receptor-potential-melastatin-channel-family-member-2-friend-or-foe
#1
Joseph Y Cheung, Barbara A Miller
Transient receptor potential melastatin 2 (Trpm2) channels are nonvoltage-activated channels permeable to monovalent and divalent cations, and are expressed in heart, brain, kidney, vasculature, and hematopoietic cells. Trpm2 is overexpressed in bladder, lung, breast, liver, head, and neck cancers. Classically, Trpm2 activation induces cell injury and death by Ca(2+) overload or enhanced inflammatory response. Recent studies show that Trpm2 protects lungs from endotoxin-induced injury by reducing reactive oxygen species production in phagocytes; and improves cardiac function after ischemia-reperfusion injury by preserving mitochondrial respiration and cellular adenosine triphosphate levels while decreasing reactive oxygen species levels...
2017: Transactions of the American Clinical and Climatological Association
https://www.readbyqxmd.com/read/28777523/transient-osteoporosis-of-the-hip-treated-with-hyperbaric-oxygen-therapy-a-case-series
#2
Kazuyoshi Yagishita, Tetsuya Jinno, Daisuke Koga, Tsuyoshi Kato, Mitsuhiro Enomoto, Tsuyoshi Kato, Takeshi Muneta, Atsushi Okawa
INTRODUCTION: Transient osteoporosis of the hip (TOH) is a self-limiting disorder characterized by bone marrow edema at the femoral head and neck. Patients report pain as moderate or severe at onset; pain gradually subsides at about six months (range four to 12 months). Differential diagnosis of the early stages of osteonecrosis of the femoral head (ONFH) is sometimes difficult. Because hyperbaric oxygen (HBO₂) therapy is effective for reduction of edema in soft tissue injury and early stages of ONFH, we hypothesized that HBO₂ could be effective in TOH for accelerated recovery...
November 2016: Undersea & Hyperbaric Medicine: Journal of the Undersea and Hyperbaric Medical Society, Inc
https://www.readbyqxmd.com/read/28748496/huperzine-a-alleviates-neuroinflammation-oxidative-stress-and-improves-cognitive-function-after-repetitive-traumatic-brain-injury
#3
Zhengrong Mei, Peiying Zheng, Xiangping Tan, Ying Wang, Bing Situ
Traumatic brain injury (TBI) may trigger secondary injury cascades including endoplasmic reticulum stress, oxidative stress, and neuroinflammation. Unfortunately, there are no effective treatments targeting either primary or secondary injuries that result in long-term detrimental consequences. Huperzine A (HupA) is a potent acetylcholinesterase inhibitor (AChEI) that has been used treatment of Alzheimer's disease (AD). This study aimed to explore the neuroprotective effects of HupA in TBI and its possible mechanisms...
July 26, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28725211/critical-evaluation-of-the-lund-concept-for-treatment-of-severe-traumatic-head-injury-25%C3%A2-years-after-its-introduction
#4
REVIEW
Per-Olof Grände
When introduced in 1992, the Lund concept (LC) was the first complete guideline for treatment of severe traumatic brain injury (s-TBI). It was a theoretical approach, based mainly on general physiological principles-i.e., of brain volume control and optimization of brain perfusion and oxygenation of the penumbra zone. The concept gave relatively strict outlines for cerebral perfusion pressure, fluid therapy, ventilation, sedation, nutrition, the use of vasopressors, and osmotherapy. The LC strives for treatment of the pathophysiological mechanisms behind symptoms rather than just treating the symptoms...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28690173/immediate-and-delayed-hyperbaric-oxygen-therapy-as-a-neuroprotective-treatment-for-traumatic-brain-injury-in-mice
#5
Renana Baratz-Goldstein, Shlomi Toussia-Cohen, Aviya Elpaz, Vardit Rubovitch, Chaim G Pick
BACKGROUND: Traumatic brain injury is the most common cause of death or chronic disability among people under-35-years-old. There is no effective pharmacological treatment currently existing for TBI. Hyperbaric oxygen therapy (HBOT) is defined as the inhalation of pure oxygen in a hyperbaric chamber that is pressurized higher than 1atm. HBOT offers physiological and mechanical effects by inducing a state of increased pressure and hyperoxia. HBOT has been proposed as an effective treatment for moderate traumatic brain injury (mTBI), yet the exact therapeutic window and mechanism that underlies this effect is not completely understood...
July 8, 2017: Molecular and Cellular Neurosciences
https://www.readbyqxmd.com/read/28678737/functional-brain-mri-in-patients-complaining-of-electrohypersensitivity-after-long-term-exposure-to-electromagnetic-fields
#6
Gunnar Heuser, Sylvia A Heuser
INTRODUCTION: Ten adult patients with electromagnetic hypersensitivity underwent functional magnetic resonance imaging (fMRI) brain scans. All scans were abnormal with abnormalities which were consistent and similar. It is proposed that fMRI brain scans be used as a diagnostic aid for determining whether or not a patient has electromagnetic hypersensitivity. Over the years we have seen an increasing number of patients who had developed multi system complaints after long term repeated exposure to electromagnetic fields (EMFs)...
July 5, 2017: Reviews on Environmental Health
https://www.readbyqxmd.com/read/28566813/kickboxing-review-anthropometric-psychophysiological-and-activity-profiles-and-injury-epidemiology
#7
REVIEW
M Slimani, H Chaabene, B Miarka, E Franchini, K Chamari, F Cheour
Kickboxing is one of the modern combat sports. The psychophysiological demands of a kickboxing competition require athletes to achieve high thresholds of several aspects of physical fitness. The aim of the current review is to critically analyse and appraise the kickboxer's anthropometric, physiological, physical and psychological attributes with the activity profile and injury epidemiology in order to provide practical recommendations for training as well as new areas of scientific research. The available information shows that both amateur and elite-level male kickboxers are characterized by a higher proportion of mesomorphy with a well-developed muscle mass and low body fat percentage...
June 2017: Biology of Sport
https://www.readbyqxmd.com/read/28521593/use-of-high-frequency-percussive-ventilation-to-expand-organ-donor-pool
#8
Francis Benn, Ashwad Afzal, Berhane Worku, Felix Khusid, Bashar H Fahoum, Iosif Gulkarov
A 34-year-old woman was brought in to the emergency department after a motor vehicle accident. She had signs of traumatic head injury with Glasgow Coma Scale score of 3, and her neurological examination was consistent with brain death. She was persistently hypoxic on conventional mechanical ventilation and high-frequency percussive ventilation was initiated. The patient's oxygenation improved and was sustained long enough to provide time for organ procurement. This is the first case portraying high-frequency percussive ventilation as a bridge for donors failing on conventional mechanical ventilation...
January 1, 2017: Journal of Intensive Care Medicine
https://www.readbyqxmd.com/read/28465865/a-systematic-review-of-intrapartum-fetal-head-compression-what-is-the-impact-on-the-fetal-brain
#9
Kent D Heyborne
Objective During labor the fetal head is subjected to pressure related to uterine contractions and maternal pushing. Here we systematically review what is known about fetal head compression and its effects on fetal intracranial pressure, oxygenation, blood flow and cerebral function, and the plausibility that it might cause isolated fetal brain injury. Study Design Systematic review of intrapartum fetal head compression and fetal brain injury in accordance with the MOOSE methodology. The PubMed database was searched using a combination of the terms "fetal," "head," "cranial," "extracranial," "pressure," and "compression...
April 2017: American Journal of Perinatology Reports
https://www.readbyqxmd.com/read/28460591/mortality-in-pediatric-acute-respiratory-distress-syndrome-a-systematic-review-and-meta-analysis
#10
Judith Ju-Ming Wong, Mark Jit, Rehena Sultana, Yee Hui Mok, Joo Guan Yeo, Jia Wen Janine Cynthia Koh, Tsee Foong Loh, Jan Hau Lee
OBJECTIVE: Sparse and conflicting evidence exists regarding mortality risk from pediatric acute respiratory distress syndrome (ARDS). We aimed to determine the pooled mortality in pediatric ARDS and to describe its trend over time. DATA SOURCES AND STUDY SELECTION: MEDLINE, EMBASE, and Web of Science were searched from 1960 to August 2015. Keywords or medical subject headings (MESH) terms used included "respiratory distress syndrome, adult," "acute lung injury," "acute respiratory insufficiency," "acute hypoxemic respiratory failure," "pediatrics," and "child...
January 1, 2017: Journal of Intensive Care Medicine
https://www.readbyqxmd.com/read/28420542/improving-prehospital-trauma-care-in-rwanda-through-continuous-quality-improvement-an-interrupted-time-series-analysis
#11
John W Scott, Jeanne D'Arc Nyinawankusi, Samuel Enumah, Rebecca Maine, Eric Uwitonze, Yihan Hu, Ignace Kabagema, Jean Claude Byiringiro, Robert Riviello, Sudha Jayaraman
INTRODUCTION: Injury is a major cause of premature death and disability in East Africa, and high-quality pre-hospital care is essential for optimal trauma outcomes. The Rwandan pre-hospital emergency care service (SAMU) uses an electronic database to evaluate and optimize pre-hospital care through a continuous quality improvement programme (CQIP), beginning March 2014. MATERIALS AND METHODS: The SAMU database was used to assess pre-hospital quality metrics including supplementary oxygen for hypoxia (O2), intravenous fluids for hypotension (IVF), cervical collar placement for head injuries (c-collar), and either splinting (splint) or administration of pain medications (pain) for long bone fractures...
April 5, 2017: Injury
https://www.readbyqxmd.com/read/28341337/anti-inflammatory-effects-of-hyperbaric-oxygen-on-irradiated-laryngeal-tissues
#12
Mitat Arıcıgil, Mehmet Akif Dündar, Abitter Yücel, Hamdi Arbağ, Abdullah Arslan, Meryem Aktan, Sıdıka Fındık, İbrahim Kılınç
INTRODUCTION: To manage the complications of irradiation of head and neck tissue is a challenging issue for the otolaryngologist. Definitive treatment of these complications is still controversial. Recently, hyperbaric oxygen therapy is promising option for these complications. OBJECTIVE: In this study, we used biochemical and histopathological methods to investigate the efficacy of hyperbaric oxygen against the inflammatory effects of radiotherapy in blood and laryngeal tissues when radiotherapy and hyperbaric oxygen are administered on the same day...
February 27, 2017: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/28325788/decompression-illness-with-hypovolemic-shock-and-neurological-failure-symptoms-after-two-risky-dives-a-case-report
#13
Sebastian Klapa, Johannes Meyne, Wataru Kähler, Frauke Tillmans, Henning Werr, Andreas Binder, Andreas Koch
Hypovolemia is known to be a predisposing factor of decompression illness (DCI) while diving. The typical clinically impressive neurological symptoms of DCI may distract from other symptoms such as an incipient hypovolemic shock. We report the case of a 61-year-old male Caucasian, who presented with an increasing central and peripheral neural failure syndrome and massive hypovolemia after two risky dives. Computed tomography (CT) scans of the chest and Magnetic resonance imaging scans of the head revealed multiple cerebral and pulmonary thromboembolisms...
March 2017: Physiological Reports
https://www.readbyqxmd.com/read/28291467/a-retrospective-cohort-analysis-of-battle-injury-versus-disease-non-battle-injury-two-validating-flight-surgeons-experience
#14
William P Butler, Lawrence W Steinkraus, Brittany L Fouts, Jennifer L Serres
Today, military combat medical care is the best it has ever been. Regulated U.S. Air Force aeromedical evacuation (AE) is one important reason. The Theater Validating Flight Surgeon (TVFS) validates that a patient is ready for flight. Two TVFSs' experiences, successively deployed in 2007, are the focus of this study. A unique operational worksheet used to manage the AE queue was used for approximately 5 months. A descriptive analysis of the worksheet's 1,389 patients found the majority male (94%), median age 30 years, and mostly Army enlisted soldiers (63%)...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28263248/operating-room-fires-in-oculoplastic-surgery
#15
Robi N Maamari, Philip L Custer
PURPOSE: This study was performed to characterize the frequency, causes, and possible risk factors of operating room (OR) fires experienced by members of the American Society of Ophthalmic Plastic and Reconstructive Surgery. METHODS: An online questionnaire was distributed to American Society of Ophthalmic Plastic and Reconstructive Surgery members, collecting data on surgical fires experienced by respondents throughout their careers. In addition, the questionnaire investigated viewpoints on OR fire safety, current practice patterns with oxygen delivery and surgical device usage, and management of patients referred after previous surgical fire exposure...
March 3, 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28178160/extracorporeal-membrane-oxygenation-support-in-post-traumatic-cardiopulmonary-failure-a-10-year-single-institutional-experience
#16
Chun-Yu Lin, Feng-Chun Tsai, Hsiu-An Lee, Yuan-His Tseng
Patients with multiple traumas associated with cardiopulmonary failure have a high mortality rate; however, such patients can be temporarily stabilized using extracorporeal membrane oxygenation (ECMO), providing a bridge to rescue therapy. Using a retrospective study design, we aimed to clarify the prognostic factors of post-traumatic ECMO support.From March 2006 to July 2016, 43 adult patients (mean age, 37.3 ± 15.2 years; 7 females [16.3%]) underwent ECMO because of post-traumatic cardiopulmonary failure...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28158980/early-exposure-to-hyperoxia-and-mortality-in-critically-ill-patients-with-severe-traumatic-injuries
#17
Derek W Russell, David R Janz, William L Emerson, Addison K May, Gordon R Bernard, Zhiguo Zhao, Tatsuki Koyama, Lorraine B Ware
BACKGROUND: Hyperoxia is common early in the course of resuscitation of critically ill patients. It has been associated with mortality in some, but not all, studies of cardiac arrest patients and other critically ill cohorts. Reasons for the inconsistency are unclear and may depend on unmeasured patient confounders, the timing and duration of hyperoxia, population characteristics, or the way that hyperoxia is defined and measured. We sought to determine whether, in a prospectively collected cohort of mechanically ventilated patients with traumatic injuries with and without head trauma, higher maximum partial pressure of arterial oxygen (PaO2) within 24 hours of admission would be associated with increased risk of in-hospital mortality...
February 3, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/28072842/fractal-analysis-of-brain-blood-oxygenation-level-dependent-bold-signals-from-children-with-mild-traumatic-brain-injury-mtbi
#18
Olga Dona, Michael D Noseworthy, Carol DeMatteo, John F Connolly
BACKGROUND: Conventional imaging techniques are unable to detect abnormalities in the brain following mild traumatic brain injury (mTBI). Yet patients with mTBI typically show delayed response on neuropsychological evaluation. Because fractal geometry represents complexity, we explored its utility in measuring temporal fluctuations of brain resting state blood oxygen level dependent (rs-BOLD) signal. We hypothesized that there could be a detectable difference in rs-BOLD signal complexity between healthy subjects and mTBI patients based on previous studies that associated reduction in signal complexity with disease...
2017: PloS One
https://www.readbyqxmd.com/read/28001756/transcranial-red-near-infrared-light-emitting-diode-therapy-to-improve-cognition-in-chronic-traumatic-brain-injury
#19
Margaret A Naeser, Paula I Martin, Michael D Ho, Maxine H Krengel, Yelena Bogdanova, Jeffrey A Knight, Megan K Yee, Ross Zafonte, Judith Frazier, Michael R Hamblin, Bang-Bon Koo
We review the general topic of traumatic brain injury (TBI) and our research utilizing transcranial photobiomodulation (tPBM) to improve cognition in chronic TBI using red/near-infrared (NIR) light-emitting diodes (LEDs) to deliver light to the head. tPBM improves mitochondrial function increasing oxygen consumption, production of adenosine triphosphate (ATP), and improving cellular energy stores. Nitric oxide is released from the cells increasing regional blood flow in the brain. Review of published studies: In our previously published study, 11 chronic TBI patients with closed-head TBI caused by different accidents (motor vehicle accident, sports-related, improvised explosive device blast injury) and exhibiting long-lasting cognitive dysfunction received 18 outpatient treatments (Monday, Wednesday, Friday for 6 weeks) starting at 10 months to 8 years post-TBI...
December 2016: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/27692683/the-effect-of-combined-out-of-hospital-hypotension-and-hypoxia-on-mortality-in-major-traumatic-brain-injury
#20
Daniel W Spaite, Chengcheng Hu, Bentley J Bobrow, Vatsal Chikani, Bruce Barnhart, Joshua B Gaither, Kurt R Denninghoff, P David Adelson, Samuel M Keim, Chad Viscusi, Terry Mullins, Duane Sherrill
STUDY OBJECTIVE: Survival is significantly reduced by either hypotension or hypoxia during the out-of-hospital management of major traumatic brain injury. However, only a handful of small studies have investigated the influence of the combination of both hypotension and hypoxia occurring together. In patients with major traumatic brain injury, we evaluate the associations between mortality and out-of-hospital hypotension and hypoxia separately and in combination. METHODS: All moderate or severe traumatic brain injury cases in the preimplementation cohort of the Excellence in Prehospital Injury Care study (a statewide, before/after, controlled study of the effect of implementing the out-of-hospital traumatic brain injury treatment guidelines) from January 1, 2007, to March 31, 2014, were evaluated (exclusions: <10 years, out-of-hospital oxygen saturation ≤10%, and out-of-hospital systolic blood pressure <40 or >200 mm Hg)...
January 2017: Annals of Emergency Medicine
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