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Lung protective ventilation

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https://www.readbyqxmd.com/read/28431421/sevoflurane-posttreatment-attenuates-lung-injury-induced-by-oleic-acid-in-dogs
#1
Guizhi Du, Shurong Wang, Zhuo Li, Jin Liu
BACKGROUND: In animal models, both sevoflurane and propofol protect against acute lung injury (ALI), especially when administered prior to ALI onset. We hypothesized that when compared to propofol, sevoflurane administration after the onset of acute respiratory distress syndrome would mitigate oleic acid (OA)-induced ALI in dogs. METHODS: Dogs were randomly assigned to receive intravenous OA to induce ALI (n = 7 for each OA group) or saline as an OA control (n = 6 for each control)...
May 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28430689/perioperative-outcomes-of-robotic-assisted-hysterectomy-compared-with-open-hysterectomy
#2
Bhargavi Gali, Jamie N Bakkum-Gamez, David J Plevak, Darrell Schroeder, Timothy O Wilson, Christopher J Jankowski
BACKGROUND: Increasing numbers of robotic hysterectomies (RH) are being performed. To provide ventilation (with pneumoperitoneum and steep Trendelenburg position) for these procedures, utilization of lung protective strategies with limiting airway pressures and tidal volumes is difficult. Little is known about the effects of intraoperative mechanical ventilation and high peak airway pressures on perioperative complications. We performed a retrospective review to determine whether patients undergoing RH had increased pulmonary complications compared to total abdominal hysterectomy (TAH)...
April 19, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28428256/regulation-of-lung-endothelial-permeability-and-inflammatory-responses-by-prostaglandin-a2-role-of-ep4-receptor
#3
Tomomi Ohmura, Yufeng Tian, Nicolene Sarich, Yunbo Ke, Angelo Meliton, Alok S Shah, Katrin Andreasson, Konstantin G Birukov, Anna A Birukova
A role of prostaglandin A2 (PGA2) in modulation of vascular endothelial function remains unknown. We investigated effects of PGA2 on pulmonary endothelial cell (EC) permeability and inflammatory activation and identified a receptor mediating these effects. PGA2 enhanced the EC barrier and protected against barrier dysfunction caused by vasoactive peptide thrombin and proinflammatory bacterial wall lipopolysacharide (LPS). Receptor screening using pharmacologic and molecular inhibitory approaches identified EP4 as a novel PGA2 receptor...
April 20, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28426531/high-fat-feeding-protects-mice-from-ventilator-induced-lung-injury-via-neutrophil-independent-mechanisms
#4
Michael R Wilson, Joanne E Petrie, Michael W Shaw, Cong Hu, Charlotte M Oakley, Samantha J Woods, Brijesh V Patel, Kieran P O'Dea, Masao Takata
OBJECTIVE: Obesity has a complex impact on acute respiratory distress syndrome patients, being associated with increased likelihood of developing the syndrome but reduced likelihood of dying. We propose that such observations are potentially explained by a model in which obesity influences the iatrogenic injury that occurs subsequent to intensive care admission. This study therefore investigated whether fat feeding protected mice from ventilator-induced lung injury. DESIGN: In vivo study...
April 19, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28424078/interleukin-6-displays-lung-anti-inflammatory-properties-and-exerts-protective-hemodynamic-effects-in-a-double-hit-murine-acute-lung-injury
#5
Guillaume Voiriot, Keyvan Razazi, Valérie Amsellem, Jeanne Tran Van Nhieu, Shariq Abid, Serge Adnot, Armand Mekontso Dessap, Bernard Maitre
BACKGROUND: Interleukin 6 (IL-6) is a predictive factor of poor prognosis in patients with acute respiratory distress syndrome (ARDS). However, its acute pulmonary hemodynamic effects and role in lung injury have not been investigated in a clinically relevant murine model of ARDS. METHODS: We used adult C57Bl6 wild-type (WT) and IL-6 knock-out (IL-6KO) mice. The animals received intravenous recombinant human IL-6 (rHuIL-6) or vehicle followed by intratracheal lipopolysaccharide (LPS) or saline before undergoing low tidal volume mechanical ventilation (MV) for 5 h...
April 19, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28422775/a-contemporary-assessment-of-acute-mechanical-ventilation-in-beijing-description-costs-and-outcomes
#6
Yanping Ye, Bo Zhu, Li Jiang, Qi Jiang, Meiping Wang, Lin Hua, Xiuming Xi
OBJECTIVE: To evaluate the contemporary practice, outcomes, and costs related to mechanical ventilation among ICUs in China. DESIGN: A prospective observational cohort study. SETTING: Fourteen ICUs among 13 hospitals in Beijing, China. PATIENTS: Seven hundred ninety-three patients who received at least 24 hours of mechanical ventilation within the first 48 hours of ICU stay. INTERVENTION: None...
April 18, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28422110/maximizing-survival-lung-protective-ventilation
#7
Noah Jones
No abstract text is available yet for this article.
April 19, 2017: Lab Animal
https://www.readbyqxmd.com/read/28406813/effects-of-hypercapnia-and-hypercapnic-acidosis-on-hospital-mortality-in-mechanically-ventilated-patients
#8
Ravindranath Tiruvoipati, David Pilcher, Hergen Buscher, John Botha, Michael Bailey
OBJECTIVES: Lung-protective ventilation is used to prevent further lung injury in patients on invasive mechanical ventilation. However, lung-protective ventilation can cause hypercapnia and hypercapnic acidosis. There are no large clinical studies evaluating the effects of hypercapnia and hypercapnic acidosis in patients requiring mechanical ventilation. DESIGN: Multicenter, binational, retrospective study aimed to assess the impact of compensated hypercapnia and hypercapnic acidosis in patients receiving mechanical ventilation...
April 12, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28403395/individual-patient-data-analysis-of-tidal-volumes-used-in-three-large-randomized-control-trials-involving-patients-with-acute-respiratory-distress-syndrome
#9
J Poole, C McDowell, R Lall, G Perkins, D McAuley, F Gao, D Young
Background.: The acute respiratory distress syndrome (ARDS) is a condition with a high mortality and morbidity. Mechanical ventilation prevents immediate mortality but may further damage patients' lungs. Low tidal volume lung-protective strategies have been shown to increase survival by reducing this iatrogenic damage. Current guidelines recommend tidal volumes of 6-8 ml kg -1 of predicted body weight. We used data from three large randomized controlled trials of treatments for ARDS to determine compliance with these recommendations...
April 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28389539/microbiota-in-exhaled-breath-condensate-and-the-lung
#10
Laura Glendinning, Steven Wright, Peter Tennant, Andrew C Gill, David Collie, Gerry McLachlan
The lung microbiota is commonly sampled using relatively invasive bronchoscopic procedures. Exhaled breath condensate (EBC) collection potentially offers a less invasive alternative for lung microbiota sampling. We compared lung microbiota samples retrieved by protected specimen brushings (PSB) and exhaled breath condensate collection. We also sought to assess whether aerosolised antibiotic treatment would influence the lung microbiota and whether EBC was sensitive enough to detect such changes.EBC was collected from 6 conscious sheep, and then from the same anaesthetised sheep during mechanical ventilation...
April 7, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28387889/a-study-of-the-protective-effect-and-mechanism-of-ketamine-on-acute-lung-injury-induced-by-mechanical-ventilation
#11
W-F Wang, S Liu, B Xu
OBJECTIVE: To investigate the protective effects and mechanism of ketamine on acute lung injury induced by mechanical ventilation. PATIENTS AND METHODS: 63 patients with acute lung injury caused by mechanical ventilation in our hospital between June 2014 and May 2015 were chosen and divided into three groups: group A, B, and C. Group A (20 cases) received conventional treatment. Group B (21 cases) was treated with propofol and group C (22 cases) with ketamine. The ventilator application time, the success rate of weaning, the mortality rate, inflammation index (IL-1, Caspase-1, and NF-κB), pulmonary function index and oxygen saturation were compared...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28385915/physiology-in-medicine-understanding-dynamic-alveolar-physiology-to-minimize-ventilator-induced-lung-injury-vili
#12
Gary F Nieman, Joshua Satalin, Michaela Kollisch-Singule, Penny L Andrews, Hani Aiash, Nader M Habashi, Louis A Gatto
The acute respiratory distress syndrome (ARDS) remains a serious clinical problem with the main treatment being supportive in the form of mechanical ventilation. However, mechanical ventilation can be a double edge sword, if set improperly can exacerbate the tissue damage caused by ARDS and is known as ventilator induced lung injury (VILI). In order to minimize VILI we must understand the pathophysiologic mechanisms of tissue damage at the alveolar level. In this Physiology in Medicine paper the dynamic physiology of alveolar inflation and deflation during mechanical ventilation will be reviewed...
April 6, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28382694/quantitative-analysis-of-hyperpolarized-129-xe-gas-transfer-mri
#13
Ziyi Wang, Scott Haile Robertson, Jennifer Wang, Mu He, Rohan S Virgincar, Geoffry M Schrank, Elianna A Bier, Sudarshan Rajagopal, Yuh Chin Huang, Thomas G O'Riordan, Craig R Rackley, H Page McAdams, Bastiaan Driehuys
PURPOSE: Hyperpolarized (129) Xe magnetic resonance imaging (MRI) using Dixon-based decomposition enables single-breath imaging of (129) Xe in the airspaces, interstitial barrier tissues, and red blood cells (RBCs). However, methods to quantitatively visualize information from these images of pulmonary gas transfer are lacking. Here, we introduce a novel method to transform these data into quantitative maps of pulmonary ventilation, and (129) Xe gas transfer to barrier and RBC compartments...
April 6, 2017: Medical Physics
https://www.readbyqxmd.com/read/28380189/extracorporeal-respiratory-support-in-adult-patients
#14
Thiago Gomes Romano, Pedro Vitale Mendes, Marcelo Park, Eduardo Leite Vieira Costa
In patients with severe respiratory failure, either hypoxemic or hypercapnic, life support with mechanical ventilation alone can be insufficient to meet their needs, especially if one tries to avoid ventilator settings that can cause injury to the lungs. In those patients, extracorporeal membrane oxygenation (ECMO), which is also very effective in removing carbon dioxide from the blood, can provide life support, allowing the application of protective lung ventilation. In this review article, we aim to explore some of the most relevant aspects of using ECMO for respiratory support...
January 2017: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/28371091/novel-magnetic-resonance-imaging-for-assessment-of-bronchial-stenosis-in-lung-transplant-recipients
#15
Kamran Mahmood, Lukas Ebner, Mu He, Scott Haile Robertson, Ziyi Wang, H Page McAdams, Momen M Wahidi, Scott L Shofer, Yuh-Chin T Huang, Bastiaan Driehuys
Bronchial stenosis in lung transplant recipients is a common disorder that adversely affects clinical outcomes. It is evaluated by spirometry, CT scan and bronchoscopy with significant limitations. We hypothesize that magnetic resonance imaging (MRI) employing both ultrashort echo time (UTE) scans and hyperpolarized (HP) (129) Xe gas can offer structural and functional assessment of bronchial stenosis seen after lung transplantation. Six patients with lung transplantation-related bronchial stenosis underwent HP (129) Xe MRI and UTE MRI...
March 29, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28370347/velocity-vector-imaging-shows-normal-cardiac-systolic-function-in-survivors-of-severe-bronchopulmonary-dysplasia-at-6-16-years-of-age
#16
Piia Suursalmi, Tiina Ojala, Tuija Poutanen, Anneli Eerola, Päivi Korhonen, Tarja Kopeli, Outi Tammela
AIM: This study evaluated global myocardial function and associations between cardiac function and lung function in very low birth weight (VLBW) children, with and without severe radiographic bronchopulmonary dysplasia (BPD), at 6-14 years of age. METHODS: We studied 34 VLBW and 19 term-born controls and the VLBW group was further divided into a BPD group with severe radiographic BPD and those without radiographic BPD in infancy. Detailed right and left ventricular myocardial function was analysed by velocity vector imaging and the left ventricular mass was calculated...
March 31, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28363030/integrated-stress-response-mediates-epithelial-injury-in-mechanical-ventilation
#17
Tamas Dolinay, Blanca E Himes, Maya Shumyatcher, Gladys Gray Lawrence, Susan S Margulies
RATIONALE: Ventilator-induced lung injury (VILI) is a severe complication of mechanical ventilation that can lead to acute respiratory distress syndrome (ARDS). VILI is characterized by damage to the epithelial barrier with subsequent pulmonary edema and profound hypoxia. Available lung protective ventilator strategies offer only modest benefit in preventing VILI because they cannot impede alveolar overdistension and concomitant epithelial barrier dysfunction in the inflamed lung regions...
March 31, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28356206/lung-protective-ventilation-in-the-emergency%C3%A2-department
#18
EDITORIAL
Jonathan Elmer, David T Huang
No abstract text is available yet for this article.
March 26, 2017: Annals of Emergency Medicine
https://www.readbyqxmd.com/read/28350057/monoclonal-antibody-against-toll-like-receptor%C3%A2-4-attenuates-ventilator-induced-lung-injury-in-rats-by-inhibiting-myd88-and-nf-%C3%AE%C2%BAb-dependent-signaling
#19
Cuiyuan Huang, Linghui Pan, Fei Lin, Huijun Dai, Ruili Fu
The mechanisms through which mechanical ventilation causes non-infectious inflammatory diseases and lung injury are poorly understood. Animals models of this type of injury suggest that it involves signaling mediated by Toll‑like receptor (TLR)4 and 9. In this study, in order to gain further insight into the involvement of TLR4 in this type of injury, we performed in vivo and in vitro experiments to determine the mechanisms through which TLR4 triggers inflammation. We also examined whether the use of TLR4 monoclonal antibody (mAb) can alleviate this type of injury...
February 1, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28346529/human-amnion-epithelial-cells-modulate-the-inflammatory-response-to-ventilation-in-preterm-lambs
#20
Jacqueline M Melville, Courtney A McDonald, Robert J Bischof, Graeme R Polglase, Rebecca Lim, Euan M Wallace, Graham Jenkin, Timothy J Moss
Ventilation of preterm neonates causes pulmonary inflammation that can contribute to lung injury, propagate systemically and result in long-term disease. Modulation of this initial response may reduce lung injury and its sequelae. We aimed to determine the effect of human amnion epithelial cells (hAECs) on immune activation and lung injury in preterm neonatal lambs. Preterm lambs received intratracheal hAECs (90x106) or vehicle, prior to 2 h of mechanical ventilation. Within 5 min of ventilation onset, lambs also received intravenous hAECs (90x106) or vehicle...
2017: PloS One
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