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https://www.readbyqxmd.com/read/29688987/reduction-in-blood-glutamate-levels-combined-with-the-genetic-inactivation-of-a2ar-significantly-alleviate-traumatic-brain-injury-induced-acute-lung-injury
#1
Wei Bai, Ping Li, Ya-Lei Ning, Yu-Lin Jiang, Nan Yang, Xing Chen, Yuan-Guo Zhou
Traumatic brain injury-induced acute lung injury (TBI-ALI) is a serious complication of traumatic brain injury (TBI). Our previous clinical study found that high levels of blood glutamate after TBI were closely related to the occurrence and severity of TBI-ALI, while it remains unknown whether a high concentration of blood glutamate directly causes or aggravates TBI-ALI. We found that inhibition of the adenosine A2A receptor (A2AR) after brain injury alleviated the TBI-ALI; however, it is unknown whether lowering blood glutamate levels in combination with inhibiting the A2AR would lead to better effects...
April 23, 2018: Shock
https://www.readbyqxmd.com/read/29684443/modified-porcine-surfactant-enriched-by-recombinant-human-superoxide-dismutase-for-experimental-meconium-aspiration-syndrome
#2
Jana Kopincova, Pavol Mikolka, Maros Kolomaznik, Petra Kosutova, Andrea Calkovska, Daniela Mokra
AIMS: Combination of exogenous surfactant with antioxidant enzyme recombinant human superoxide dismutase (rhSOD) was tested in the treatment of experimental meconium aspiration syndrome as oxidative processes play key role in its pathogenesis. MATERIAL AND METHODS: Young New Zealand rabbits were instilled by saline (Sal group) or by meconium suspension (Mec group). Some of meconium-instilled animals were treated by surfactant alone (Surf group) or surfactant in combination with rhSOD (Surf + SOD group) and oxygen-ventilated for 5 h...
April 20, 2018: Life Sciences
https://www.readbyqxmd.com/read/29683055/high-frequency-percussive-ventilation-rescue-therapy-in-morbidly-obese-patients-failing-conventional-mechanical-ventilation
#3
Anatoliy Korzhuk, Ashwad Afzal, Ivan Wong, Felix Khusid, Berhane Worku, Iosif Gulkarov
BACKGROUND: Morbidly obese patients with respiratory failure who do not improve on conventional mechanical ventilation (CMV) often undergo rescue therapy with extracorporeal membrane oxygenation (ECMO). We describe our experience with high-frequency percussive ventilation (HFPV) as a rescue modality. METHODS: In a retrospective analysis from 2009 to 2016, 12 morbidly obese patients underwent HFPV after failing to wean from CMV. Data were collected regarding demographics, cause of respiratory failure, ventilation settings, and hospital course outcomes...
January 1, 2018: Journal of Intensive Care Medicine
https://www.readbyqxmd.com/read/29676955/mitochondrial-genome-modulates-myocardial-akt-glut-hk-salvage-pathway-in-spontaneously-hypertensive-rats-adapted-to-chronic-hypoxia
#4
Iveta Nedvedova, David Kolar, Barbara Elsnicova, Daniela Hornikova, Jiri Novotny, Martin Kalous, Michal Pravenec, Jan Neckar, Frantisek Kolar, Jitka M Zurmanova
Recently we have shown that adaptation to continuous normobaric hypoxia (CNH) decreases myocardial ischemia/reperfusion injury in spontaneously hypertensive rats (SHR) and in conplastic strain (SHR-mtBN ). The protective effect was stronger in the latter group characterized by a selective replacement of SHR mitochondrial genome with that of a more ischemia-resistant Brown Norway strain. The aim of the present study was to examine the possible involvement of the hypoxia inducible factor (HIF)-dependent pathway of the protein kinase B/glucose transporters/hexokinase (Akt/GLUT/HK) in this mitochondrial genome-related difference of the cardioprotective phenotype...
April 20, 2018: Physiological Genomics
https://www.readbyqxmd.com/read/29672220/environmental-hypoxia-favors-myoblast-differentiation-and-fast-phenotype-but-blunts-activation-of-protein-synthesis-after-resistance-exercise-in-human-skeletal-muscle
#5
Olouyomi Gnimassou, Rodrigo Fernández-Verdejo, Matthew Brook, Damien Naslain, Estelle Balan, Mariwan Sayda, Jessica Cegielski, Henri Nielens, Anabelle Decottignies, Jean-Baptiste Demoulin, Kenneth Smith, Philip J Atherton, Marc Francaux, Louise Deldicque
We hypothesized that a single session of resistance exercise performed in moderate hypoxic (FiO2 : 14%) environmental conditions would potentiate the anabolic response during the recovery period spent in normoxia. Twenty subjects performed a 1-leg knee extension session in normoxic or hypoxic conditions. Muscle biopsies were taken 15 min and 4 h after exercise in the vastus lateralis of the exercised and the nonexercised legs. Blood and saliva samples were taken at regular intervals before, during, and after the exercise session...
April 19, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29670906/desflurane-attenuates-ventilator-induced-lung-injury-in-rats-with-acute-respiratory-distress-syndrome
#6
Xue Lin, Ying-Nan Ju, Wei Gao, Dong-Mei Li, Chang-Chun Guo
Ventilator-induced lung injury aggravates the existing lung injury. This study investigated the effect of desflurane on VILI in a rat model of acute respiratory distress syndrome. Forty-eight rats were randomized into a sham (S) group, control (C) group, lipopolysaccharide/ventilation (LV) group, lipopolysaccharide/ventilation/desflurane (LVD) group, or lipopolysaccharide/low ventilation with and without desflurane (LLV and LLVD) groups. Rats in the S group received anesthesia only. Rats in the LV and LVD groups received lipopolysaccharide and were ventilated with a high tidal volume...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29670681/diaphragm-muscle-weakness-following-acute-sustained-hypoxic-stress-in-the-mouse-is-prevented-by-pretreatment-with-n-acetyl-cysteine
#7
Andrew J O'Leary, Sarah E Drummond, Deirdre Edge, Ken D O'Halloran
Oxygen deficit (hypoxia) is a major feature of cardiorespiratory diseases characterized by diaphragm dysfunction, yet the putative role of hypoxic stress as a driver of diaphragm dysfunction is understudied. We explored the cellular and functional consequences of sustained hypoxic stress in a mouse model. Adult male mice were exposed to 8 hours of normoxia, or hypoxia (FiO2  = 0.10) with or without antioxidant pretreatment (N-acetyl cysteine, 200 mg/kg i.p.). Ventilation and metabolism were measured. Diaphragm muscle contractile function, myofibre size and distribution, gene expression, protein signalling cascades, and oxidative stress (TBARS) were determined...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29668779/effects-of-propofol-pretreatment-on-lung-morphology-and-heme-oxygenase-1-expression-in-oleic-acid-induced-acute-lung-injury-in-rats
#8
Zelong Tan, Huaizhou Wang, Jing Sun, Mingsheng Li
PURPOSE: To investigate the effects of propofol pretreatment on lung morphology and heme oxygenase-1 expression in oleic acid -induced acute lung injury in rats. METHODS: A total of 32 male Sprague-Dawley rats (250-300g) were randomly divided into the following four groups (n=8/group): group C, group OA, group OA+PR, and group OA+IX to compare related parameter changes. RESULTS: PaO2, PCO2, and PaO2/FiO2 were significantly different among the four treatment groups (P<0...
March 2018: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/29667182/breathing-regulation-and-blood-gas-homeostasis-after-near-complete-lesions-of-the-retrotrapezoid-nucleus-in-adult-rats
#9
George M P R Souza, Roy Kanbar, Daniel S Stornetta, Stephen B G Abbott, Ruth L Stornetta, Patrice G Guyenet
The retrotrapezoid nucleus (RTN) is one of several CNS nuclei that contribute, in various capacities (e.g. CO2 detection, neuronal modulation) to the central respiratory chemoreflex (CRC). Here we test how important the RTN is to PCO2 homeostasis and breathing during sleep or wake. RTN Nmb positive neurons were killed with targeted microinjections of substance-P-saporin conjugate in adult rats. Under normoxia, rats with large RTN lesions (92 ± 4 % cell loss) had normal blood pressure (BP) and arterial pH but were hypoxic (-8 mmHg PaO2 ) and hypercapnic (+10 mmHg PaCO2 )...
April 18, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29663179/the-impact-of-obesity-on-pulmonary-deterioration-in-patients-undergoing-robotic-assisted-laparoscopic-prostatectomy
#10
Sebastian Blecha, Marion Harth, Florian Zeman, Timo Seyfried, Matthias Lubnow, Maximilian Burger, Stefan Denzinger, Michael T Pawlik
Obesity affects respiratory and hemodynamic function in anesthetized patients. The aim of this study was to evaluate the influence of the body mass index (BMI) on pulmonary changes in a permanent 45° steep Trendelenburg position (STP) during robotic-assisted laparoscopic prostatectomy (RALP). 51 patients undergoing RALP under standardized anesthesia were included. Perioperative pulmonary function and oxygenation were measured in awake patients (T0 ), 20 min after the induction of anesthesia (T1 ), after insufflation of the abdomen in supine position (T2 ), after 30 min in STP (T3 ), when controlling Santorini's plexus in STP (T4 ), before awakening while supine (T5 ), and after 45 min in the recovery room (T6 )...
April 16, 2018: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29650044/human-amnion-derived-mesenchymal-stem-cells-alleviate-lung-injury-induced-by-white-smoke-inhalation-in-rats
#11
Pei Cui, Haiming Xin, Yongming Yao, Shichu Xiao, Feng Zhu, Zhenyu Gong, Zhiping Tang, Qiu Zhan, Wei Qin, Yanhua Lai, Xiaohui Li, Yalin Tong, Zhaofan Xia
BACKGROUND: White smoke inhalation (WSI) is an uncommon but potentially deadly cause of acute lung injury and acute respiratory distress syndrome for which no effective pharmaceutical treatment has been developed. This study aimed to determine the protective effects of human amnion-derived mesenchymal stem cells (hAMSCs) against WSI-induced lung injury in rats. METHODS: hAMSCs were injected into rats via the tail vein 4 h after WSI. At 1, 3, 7, 14, and 28 days after cell injection, hAMSCs labeled with PKH26 in lung, heart, liver, and kidney tissues were observed by fluorescence microscopy...
April 12, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29629989/an-open-loop-physiologic-model-based-decision-support-system-can-provide-appropriate-ventilator-settings
#12
Dan Stieper Karbing, Savino Spadaro, Nilanjan Dey, Riccardo Ragazzi, Elisabetta Marangoni, Francesca Dalla Corte, Federico Moro, David Lodahl, Niklas Schurmann Hansen, Robert Winding, Stephen Edward Rees, Carlo Alberto Volta
OBJECTIVES: To evaluate the physiologic effects of applying advice on mechanical ventilation by an open-loop, physiologic model-based clinical decision support system. DESIGN: Prospective, observational study. SETTING: University and Regional Hospitals' ICUs. PATIENTS: Varied adult ICU population. INTERVENTIONS: Advice were applied if accepted by physicians for a period of up to 4-8 hours. MEASUREMENTS AND MAIN RESULTS: Seventy-two patients were included for data analysis...
April 6, 2018: Critical Care Medicine
https://www.readbyqxmd.com/read/29628892/the-effect-of-oxygen-enrichment-on-cardiorespiratory-and-neuropsychological-responses-in-workers-with-chronic-intermittent-exposure-to-high-altitude-alma-5-050-m
#13
Fernando A Moraga, Iván López, Alicia Morales, Daniel Soza, Jessica Noack
It is estimated that labor activity at high altitudes in Chile will increase from 60,000 to 120,000 workers by the year 2020. Oxygenation of spaces improves the quality of life for workers at high geographic altitudes (<5,000 m). The aim of this study was to determine the effect of a mobile oxygen module system on cardiorespiratory and neuropsychological performance in a population of workers from Atacama Large Millimeter/submillimeter Array (ALMA, 5,050 m) radiotelescope in the Chajnantor Valley, Chile...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29628154/-severity-of-disease-scoring-systems-and-mortality-after-non-cardiac-surgery
#14
Pedro Videira Reis, Gabriela Sousa, Ana Martins Lopes, Ana Vera Costa, Alice Santos, Fernando José Abelha
BACKGROUND: Mortality after surgery is frequent and severity of disease scoring systems are used for prediction. Our aim was to evaluate predictors for mortality after non-cardiac surgery. METHODS: Adult patients admitted at our surgical intensive care unit between January 2006 and July 2013 was included. Univariate analysis was carried using Mann-Whitney, Chi-square or Fisher's exact test. Logistic regression was performed to assess independent factors with calculation of odds ratio and 95% confidence interval (95% CI)...
April 5, 2018: Revista Brasileira de Anestesiologia
https://www.readbyqxmd.com/read/29626267/different-ventilation-techniques-and-hemodynamic-optimization-to-maintain-regional-cerebral-oxygen-saturation-rsco-2-during-laparoscopic-bariatric-surgery-a-prospective-randomized-interventional-study
#15
Osama M Asaad
PURPOSE: The purpose of this study was to assess the changes in regional cerebral oxygen saturation (rScO2 ) in response to different ventilation strategies: inspired oxygen concentration (FiO2 ), end-tidal carbon dioxide (EtCO2 ), and positive end expiratory pressure (PEEP) in addition to optimizing mean arterial pressure (MAP) in obese patients subjected to laparoscopic bariatric surgery in the reverse trendelenburg position. METHODS: 50 obese patients were randomly assigned into one of two groups...
April 6, 2018: Journal of Anesthesia
https://www.readbyqxmd.com/read/29619334/factors-determining-outcomes-in-adult-patient-undergoing-mechanical-ventilation-a-real-world-retrospective-study-in-an-indian-intensive-care-unit
#16
Khalid Ismail Khatib, Subhal Bhalchandra Dixit, Mukund Manohar Joshi
Background: Characteristics of patients admitted to intensive care units with respiratory failure (RF) and undergoing mechanical ventilation (MV) have been described for particular indications and diseases, but there are few studies in the general Intensive Care Unit (ICU) population and even lesser from developing countries. Objective: This study aims to study clinical characteristics, outcomes, and factors affecting outcomes in adult patients with RF on MV admitted to ICU...
January 2018: International Journal of Critical Illness and Injury Science
https://www.readbyqxmd.com/read/29614341/lung-pathologies-analyzed-with-multi-frequency-electrical-impedance-tomography-pilot-animal-study
#17
Susana Aguiar Santos, Michael Czaplik, Jakob Orschulik, Nadine Hochhausen, Steffen Leonhardt
In critically ill patients, correct diagnosis of lung disease is essential for successful therapy. Therefore, this study investigated whether new multi-frequency electrical impedance tomography (mfEIT) can detect, monitor and differentiate between pathologies associated with the acute respiratory distress syndrome (ARDS). For this pilot study, 12 pigs were randomized into an ARDS (bronchoalveolar lavage) group (n=7) and a healthy control group (n=5). Animals were monitored by means of mfEIT. In addition to functional images, a new impaired-ventilation (rImpVent) index was developed and frequency-difference images were computed and analyzed...
March 31, 2018: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/29613957/health-care-utilization-and-the-cost-of-post-traumatic-ards-care
#18
Anamaria J Robles, Lucy Z Kornblith, Carolyn M Hendrickson, Benjamin M Howard, Amanda S Conroy, Farzad Moazed, Carolyn S Calfee, Mitchell J Cohen, Rachael A Callcut
BACKGROUND: Post-traumatic acute respiratory distress syndrome (ARDS) is associated with prolonged mechanical ventilation and longer hospitalizations. The relationship between post-traumatic ARDS severity and financial burden has not been previously studied. We hypothesized that increasing severity is associated with incrementally higher health care costs. METHODS: Adults arriving as the highest level of trauma activation were enrolled in an ongoing prospective cohort study...
April 2, 2018: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/29608490/veno-venous-extracorporeal-membrane-oxygenation-for-respiratory-failure-how-long-is-too-long
#19
Jay Menaker, Ronald P Rabinowitz, Ali Tabatabai, Ronald B Tesoriero, Katelyn Dolly, Christopher Cornachione, Edward Stene, Jessica Buchner, Joseph Kufera, Zachary N Kon, Kristopher B Deatrick, Daniel L Herr, James V O'Connor, Thomas M Scalea
The use of veno-venous extracorporeal membrane oxygenation (VV ECMO) in adults with respiratory failure has steadily increased during the past decade. Recent literature has demonstrated variable outcomes with the use of extended ECMO. The purpose of this study is to evaluate survival to hospital discharge in patients with extended ECMO runs compared with patients with short ECMO runs at a tertiary care ECMO referral center. We retrospectively reviewed all patients on VV ECMO for respiratory failure between August 2014 and February 2017...
March 28, 2018: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/29607161/effectiveness-of-high-flow-nasal-cannula-oxygen-therapy-for-acute-respiratory-failure-with-hypercapnia
#20
Eun Sun Kim, Hongyeul Lee, Se Joong Kim, Jisoo Park, Yeon Joo Lee, Jong Sun Park, Ho Il Yoon, Jae Ho Lee, Choon-Taek Lee, Young-Jae Cho
Background: Heated and humidified high-flow nasal cannula (HFNC) oxygen therapy has recently been introduced for hypoxic respiratory failure. However, it has not been well-evaluated for acute respiratory failure with hypercapnia. Methods: This retrospective study included acute respiratory failure patients with hypercapnia in the medical intensive care unit (MICU) from April 2011 to February 2013, who required HFNC oxygen therapy for hypoxemia. Respiratory parameters were recorded and arterial blood gas analyses conducted before, and at 1 and 24 h after initiation of HFNC oxygen therapy...
February 2018: Journal of Thoracic Disease
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