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Hyperoxygenation

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https://www.readbyqxmd.com/read/29872657/new-viewpoint-in-exaggerated-increase-of-ptio-2-with-normobaric-hyperoxygenation-and-reasons-to-limit-oxygen-use-in-neurotrauma-patients
#1
Gurgen Harutyunyan, Garnik Harutyunyan, Gagik Mkhoyan
No abstract text is available yet for this article.
2018: Frontiers in Medicine
https://www.readbyqxmd.com/read/29672392/the-effect-of-hyperoxygenated-fatty-acids-in-preventing-skin-lesions-caused-by-surgical-pneumatic-tourniquets
#2
Beatriz Castillo Martín, Juan Ignacio Castillo Martín, Jesús Lago Oliver, Jorge Diz Gómez
OBJECTIVES: To determine whether hyperoxygenated fatty acids (HOFAs) provide safe and effective protection against lesions caused by surgical pneumatic tourniquets (SPTs). METHODS: This was a nonrandomized, single-blind, 2-arm, prospective, comparative study. The study was approved by the Ethics and Clinical Research Commission of the Hospital Universitario Gregorio Marañón, in Madrid, Spain. Subjects in the intervention group were treated topically with HOFAs (Linovera; B...
May 2018: Advances in Skin & Wound Care
https://www.readbyqxmd.com/read/29571239/management-of-central-retinal-artery-occlusion-following-successful-hyperbaric-oxygen-therapy-case-report
#3
Frank K Butler, Catherine Hagan, Karen Van Hoesen, Heather Murphy-Lavoie
Objective: This case report presents a patient with central retinal artery occlusion (CRAO) who was successfully treated with hyperbaric oxygen (HBO₂) but subsequently suffered a recurrence of his visual loss. Methods: CRAO may be treated successfully with HBO₂ if treatment is undertaken promptly after the onset of vision loss. The goal of HBO₂ therapy is to oxygenate the ischemic inner retinal layers via diffusion from the hyperoxygenated choroidal circulation until recanalization of the central retinal artery occurs...
January 2018: Undersea & Hyperbaric Medicine: Journal of the Undersea and Hyperbaric Medical Society, Inc
https://www.readbyqxmd.com/read/29566729/intrauterine-resuscitation-during-the-second-stage-of-term-labour-by-maternal-hyperoxygenation-versus-conventional-care-study-protocol-for-a-randomised-controlled-trial-interest-o2
#4
Lauren M Bullens, Alexandra D J Hulsenboom, Suzanne Moors, Rohan Joshi, Pieter J van Runnard Heimel, M Beatrijs van der Hout-van der Jagt, Edwin R van den Heuvel, S Guid Oei
BACKGROUND: Perinatal asphyxia is, even in developed countries, one the major causes of neonatal morbidity and mortality. Therefore, if foetal distress during labour is suspected, one should try to restore foetal oxygen levels or aim for immediate delivery. However, studies on the effect of intrauterine resuscitation during labour are scarce. We designed a randomised controlled trial to investigate the effect of maternal hyperoxygenation on the foetal condition. In this study, maternal hyperoxygenation is induced for the treatment of foetal distress during the second stage of term labour...
March 23, 2018: Trials
https://www.readbyqxmd.com/read/29378300/assessment-of-brain-oxygenation-imbalance-following-soman-exposure-in-rats
#5
Kevin Lee, Sara Bohnert, Ying Wu, Cory Vair, John Mikler, G Campbell Teskey, Jeff F Dunn
Nerve agents (NAs) are potent organophosphorus (OP) compounds with applications in chemical warfare. OP compounds act by inhibiting acetylcholinesterase (AChE). Soman (O-pinacolyl methylphosphonofluoridate) is one of the most potent NAs. It is well known that small doses of NAs can be lethal, and that even non-lethal exposure leads to long-term mental debilitation/neurological damage. However, the neuropathology following exposure to sub-lethal nerve agents is not well understood. In this study, we examined changes in tissue oxygenation (pO2 ) in the cortex and hippocampus after a sub-lethal dose of soman [80-90 μg/kg; subcutaneous]...
March 2018: Neurotoxicology
https://www.readbyqxmd.com/read/29287137/maternal-hyperoxygenation-a-potential-therapy-for-congenital-heart-disease-in-the-fetuses-a-systematic-review-of-the-current-literature
#6
Jennifer Co-Vu, Dalia Lopez-Colon, Himesh V Vyas, Natalie Weiner, Curt DeGroff
OBJECTIVES: To assess efficacy, safety, outcomes, and intrauterine complications following maternal hyperoxygenation (MH) therapy in fetuses with congenital heart disease (CHD). METHODS: A systematic review was performed following an electronic search of databases. Articles were published before January 1, 2017, in an English-language and non-English-language journals (with English translations), and included human fetuses and expectant mothers with a fetal diagnosis of CHD who received MH...
December 2017: Echocardiography
https://www.readbyqxmd.com/read/29180204/hyperoxygenated-hydrogen-rich-solution-suppresses-shock-and-resuscitation-induced-liver-injury
#7
Yangjie Dang, Ting Liu, Xiaopeng Mei, Xiangzhong Meng, Xingchun Gou, Bin Deng, Hao Xu, Lixian Xu
BACKGROUND: It is not known whether simultaneous delivery of hydrogen and oxygen can reduce injury caused by hemorrhagic shock and resuscitation (HSR). This study investigated the therapeutic potential of hyperoxygenated hydrogen-rich solution (HHOS), a combined hydrogen/oxygen carrier, in a rat model of HSR-induced liver injury. MATERIALS AND METHODS: Rats (n = 60) were randomly divided into 5 groups (n = 6 per group at each time point). One group underwent sham operation, and the others were subjected to severe hemorrhagic shock and then treated with lactated Ringer's solution (LRS), hydrogen-rich solution, hyperoxygenated solution, or HHOS...
December 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/29132470/-effects-of-bone-marrow-mesenchymal-stem-cell-transplantation-on-retinal-neovascularization-in-neonatal-rats-with-oxygen-induced-retinopathy
#8
Qing-Jie Mu, Yue-Hua Zhao, Dan-Dan Cheng, Hai-Yu Wang, Lan-Fen Chen, Yan-Song Zhao, Xiao-Li Wang
OBJECTIVE: To explore the effects of rat bone mesenchymal stem cell (BMSC) transplantation on retinal neovascularization, and to observe the changes of hypoxia-inducible factor-1 alpha (HIF-1α) and vascular endothelial growth factors (VEGF) in rats with oxygen-induced retinopathy (OIR). METHODS: Seventy-two seven-day-old Sprague-Dawley rats were randomly divided into three groups: normal control (CON), model (OIR) and BMSC transplantation. In the BMSC transplantation group, BMSCs were transplanted 5 days after oxygen conditioning...
November 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/29094032/the-inflammatory-response-of-neutrophils-in-an-in-vitro-model-that-approximates-the-postcardiac-arrest-state
#9
Young-Duck Cho, Sung-Jun Park, Sung-Hyuk Choi, Young-Hoon Yoon, Jung-Youn Kim, Sung-Woo Lee, Chae-Seung Lim
Purpose: Postcardiac arrest syndrome (PCAS) shares many features with sepsis including plasma cytokine elevation with dysregulation of cytokine production, and the presence of endotoxin in plasma. PCAS is closely related to ischemia-reperfusion injury. During ischemia-reperfusion injury, neutrophil, which is the first line of innate immunity, plays a major role. In this study, we investigated the inflammatory response of human neutrophils in an in vitro model which we simulated with hypoxia-normoxia and hypoxia-hyperoxia environments...
October 2017: Annals of Surgical Treatment and Research
https://www.readbyqxmd.com/read/29067809/combined-in-vivo-amperometric-oximetry-and-electrophysiology-in-a-single-sensor-a-tool-for-epilepsy-research
#10
Ana Ledo, Cátia F Lourenço, João Laranjinha, Greg A Gerhardt, Rui M Barbosa
Seizures are paroxysmal events in which increased neuronal activity is accompanied by an increase in localized energetic demand. The ability to simultaneously record electrical and chemical events using a single sensor poses a promising approach to identify seizure onset zones in the brain. In the present work, we used ceramic-based platinum microelectrode arrays (MEAs) to perform high-frequency amperometric recording of local pO2 and local field potential (LFP)-related currents during seizures in the hippocampus of chronically implanted freely moving rats...
November 7, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29054017/hyperventilation-and-electroconvulsive-therapy-a-literature-review
#11
REVIEW
Jorge Gómez-Arnau, Aida de Arriba-Arnau, Javier Correas-Lauffer, Mikel Urretavizcaya
BACKGROUND: Hyperventilation has been proposed as an augmentation strategy in electroconvulsive therapy (ECT) in accordance with its proconvulsant effect. OBJECTIVE: This study reviews the existing literature on the application of hyperventilation in ECT, its efficacy, and tolerance. METHODS: A systematic search was performed in PubMed and EMBASE databases. Search terms ('electroconvulsive therapy' and 'hyperventilation', 'ventilation', 'hyperoxygenation', 'hyperoxia', 'hypocapnia') were used to retrieve works from 1966 to June 2016...
January 2018: General Hospital Psychiatry
https://www.readbyqxmd.com/read/28976608/cerebrovascular-response-to-maternal-hyperoxygenation-mh-in-fetuses-with-hypoplastic-left-heart-syndrome-hlhs-depends-upon-gestational-age-ga-and-baseline-cerebrovascular-resistance
#12
Anita Szwast, Mary Putt, J William Gaynor, Daniel Licht, Jack Rychik
OBJECTIVES: Compared to normal fetuses, HLHS fetuses have smaller brain volumes and more brain injury, possibly due to diminished cerebral blood flow and oxygen content. By increasing cerebral oxygen delivery, maternal hyperoxygenation (MH) might improve brain development and reduce brain injury in these fetuses. This study investigates whether gestational age (GA) and baseline cerebrovascular resistance impact response to MH in HLHS fetuses. METHODS: The middle cerebral artery (MCA) pulsatility index (PI), a surrogate measure of cerebrovascular resistance, was assessed in 43 HLHS fetuses...
October 4, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28928616/chronic-antepartum-maternal-hyperoxygenation-in-a-case-of-severe-fetal-ebstein-s-anomaly-with-circular-shunt-physiology
#13
Alisa Arunamata, David M Axelrod, Katherine Bianco, Sowmya Balasubramanian, Amy Quirin, Theresa A Tacy
Perinatal mortality remains high among fetuses diagnosed with Ebstein's anomaly of the tricuspid valve. The subgroup of patients with pulmonary valve regurgitation is at particularly high risk. In the setting of pulmonary valve regurgitation, early constriction of the ductus arteriosus may be a novel perinatal management strategy to reduce systemic steal resulting from circular shunt physiology. We report the use of chronic antepartum maternal oxygen therapy for constriction of the fetal ductus arteriosus and modulation of fetal pulmonary vascular resistance in a late presentation of Ebstein's anomaly with severe tricuspid valve regurgitation, reversal of flow in the ductus arteriosus, and continuous pulmonary valve regurgitation...
September 2017: Annals of Pediatric Cardiology
https://www.readbyqxmd.com/read/28922519/a-cost-minimization-analysis-of-olive-oil-vs-hyperoxygenated-fatty-acid-treatment-for-the-prevention-of-pressure-ulcers-in-primary-healthcare-a-randomized-controlled-trial
#14
Inmaculada Lupiañez-Pérez, Juan Carlos Morilla-Herrera, Shakira Kaknani-Uttumchandani, Yolanda Lupiañez-Perez, Magdalena Cuevas-Fernandez-Gallego, Francisco Martin-Santos, Jorge Caro-Bautista, Jose Miguel Morales-Asencio
Pressure ulcers represent a major current health problem and cause an important economic impact on the healthcare system. Most studies on the prevention of pressure ulcers have been carried out in hospital contexts, with respect to the use of hyperoxygenated fatty acids (HOFA), and to date no studies have specifically examined the use of olive oil-based treatments. AIM: To evaluate the cost of using extra virgin olive oil, rather than HOFA, in the prevention of pressure ulcers among persons with impaired mobility and receiving home care...
September 2017: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/28872934/normobaric-hyperoxygenation-a-potential-neuroprotective-therapy-for-acute-ischemic-stroke
#15
Sven Poli, Jean-Claude Baron, Aneesh B Singhal, Florian Härtig
No abstract text is available yet for this article.
December 2017: Expert Review of Neurotherapeutics
https://www.readbyqxmd.com/read/28746973/prenatal-maternal-hyperoxygenation-testing-and-implications-for-critical-care-delivery-planning-among-fetuses-with-congenital-heart-disease-early-experience
#16
David N Schidlow, Mary T Donofrio
BACKGROUND:  Maternal hyperoxygenation (MH) during fetal ultrasound can characterize fetal pulmonary vasoreactivity (PVr) and its associations with postnatal physiology. OBJECTIVE:  We explored MH testing to facilitate perinatal risk stratification for fetuses with congenital heart disease (CHD). METHODS:  MH was performed in 12 fetuses: 2 with Ebstein anomaly, 2 with total anomalous pulmonary venous connection (TAPVC), 4 with hypoplastic left heart syndrome (HLHS) with (a) restrictive atrial septum (RAS) or (b) intact atrial septum (IAS) with decompressing vertical vein (VV), and 4 with D-loop transposition of the great arteries (TGA)...
January 2018: American Journal of Perinatology
https://www.readbyqxmd.com/read/28668226/sustained-chronic-maternal-hyperoxygenation-increases-myocardial-deformation-in-fetuses-with-a-small-aortic-isthmus-at-risk-for-coarctation
#17
Shi Zeng, Jiawei Zhou, Qinghai Peng, Wen Deng, Ming Zang, Tao Wang, Qichang Zhou
BACKGROUND: We aimed to assess differences in myocardial deformation in fetuses at risk for coarctation (CoA) and the effects of maternal hyperoxygenation on deformation. METHODS: Fetal echocardiography and velocity vector imaging were performed prospectively and serially in 48 fetuses with a small aortic isthmus and 48 gestation age-matched normal fetuses. Fetuses with a small aortic isthmus were randomly divided into two groups: one group with and the other group without maternal supplemental oxygen administration...
October 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28346330/differentiation-of-impaired-from-preserved-hemodynamics-in-patients-with-fontan-circulation-using-real-time-phase-velocity-cardiovascular-magnetic-resonance
#18
Hermann Körperich, Katja Müller, Peter Barth, Jürgen Gieseke, Nikolaus Haas, Ingram Schulze-Neick, Wolfgang Burchert, Deniz Kececioglu, Kai T Laser
PURPOSE: Progressive impairment of hemodynamics in patients with Fontan circulation is common, multifactorial, and associated with decreased quality of life and increased morbidity. We sought to assess hemodynamic differences between patients with preserved (preserved Fontans) and those with impaired circulation (impaired Fontans) after pulmonary vasodilation using oxygen and under forced breathing conditions. MATERIALS AND METHODS: Real-time phase-contrast cardiovascular magnetic resonance was performed using non-ECG triggered echo-planar imaging (temporal resolution=24 to 28 ms) in the ascending aorta (AAo) and superior vena cava (SVC)/inferior vena cava (IVC) on room air, after 100% oxygen inhalation (4 L/min; 10 min) and on forced breathing in 29 Fontan patients (17...
May 2017: Journal of Thoracic Imaging
https://www.readbyqxmd.com/read/28277990/preventing-facial-pressure-ulcers-in-patients-under-non-invasive-mechanical-ventilation-a-randomised-control-trial
#19
RANDOMIZED CONTROLLED TRIAL
D Peña Otero, D Vazquez Domínguez, L Hernanz Fernández, A Santano Magariño, V Jimenez González, J V García Klepzing, J V Beneit Montesinos
OBJECTIVE: To comparatively assess the efficacy of four different therapeutic strategies to prevent the development of facial pressure ulcers (FPUs) related to the use of non-invasive mechanical ventilation (NIV) with oro-nasal masks in critically ill hospitalised patients. METHOD: This randomised control trial was performed at the high dependency unit in the University General Hospital Gregorio Marañón in Madrid, Spain. Overall, 152 patients with acute respiratory failure were recruited...
March 2, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/28277907/the-effect-of-maternal-hyperoxygenation-on-fetal-circulatory-system-in-normal-growth-and-iugr-fetuses-what-we-can-learn-from-this-impact
#20
Nizar Khatib, Israel Thaler, Ron Beloosesky, Hanin Dabaja, Nadir Ganem, Philippe Abecassis, Yuval Ginsberg, Zeev Weiner
PURPOSE: The objectives of study were to assess and compare the effects of maternal hyperoxygenation on fetal circulation, in fetuses with intrauterine growth retardation and normal fetal growth. METHODS: Twelve singleton pregnant women with normal fetal growth and 12 singleton pregnant women with intrauterine growth restriction were recruited. Mean gestational age of 35.2 ± 3.5 and 34.7 ± 3.9 weeks, respectively. Doppler blood flow velocity waveforms were obtained from the middle cerebral artery, umbilical, main and proximal right pulmonary arteries...
April 2018: Journal of Maternal-fetal & Neonatal Medicine
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