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Protective ventilation

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https://www.readbyqxmd.com/read/28439983/a-method-for-assessing-the-performance-of-nanofiber-films-coated-on-window-screens-in-reducing-residential-exposures-to-pm2-5-of-outdoor-origin-in-beijing
#1
Shanshan Shi, Ye Bian, Li Zhang, Chun Chen
Recently, many nanofiber films have been developed for air filtration applications. These films exhibit high PM2.5 (particles with aerodynamic diameters less than 2.5 μm) removal efficiency and relatively low air resistance. Thus, coating window screens with nanofiber films may be able to mitigate residential exposure to PM2.5 of outdoor origin. This study developed a method for assessing the performance of nanofiber window screens in reducing residential exposure to PM2.5 of outdoor origin in Beijing. The results show that the use of selected nanofiber window screens all the time throughout the year can reduce the mean value of the annual average indoor PM2...
April 25, 2017: Indoor Air
https://www.readbyqxmd.com/read/28439437/supraglottic-airway-devices-the-search-for-the-best-insertion-technique-or-the-time-to-change-our-point-of-view
#2
Massimiliano Sorbello, Flavia Petrini
In the crowded world of supraglottic airway devices (SADs), many papers compare the easiness of insertion based on the different endpoints of an operator's satisfaction: first pass success, ventilation effectiveness, complications and morbidity. Proseal LMA(™) (Laryngeal Mask Airway, Teleflex Medical, Dublin, Ireland) has been extensively studied because on one hand it has a steeper learning curve and more complex insertion when compared with other SADs and on the other hand many alternative techniques are available to facilitate insertion...
April 2017: Turkish Journal of Anaesthesiology and Reanimation
https://www.readbyqxmd.com/read/28436715/controlled-invasive-mechanical-ventilation-strategies-in-obese-patients-undergoing-surgery
#3
Lígia de Albuquerque Maia, Pedro Leme Silva, Paolo Pelosi, Patricia Rieken Macedo Rocco
The obesity prevalence is increasing in surgical population. As the number of obese surgical patients increases, so does the demand for mechanical ventilation. Nevertheless, ventilatory strategies in this population are challenging, since obesity results in pathophysiological changes in respiratory function. Areas covered: We reviewed the impact of obesity on respiratory system and the effects of controlled invasive mechanical ventilation strategies in obese patients undergoing surgery. To date, there is no consensus regarding the optimal invasive mechanical ventilation strategy for obese surgical patients, and no evidence that possible intraoperative beneficial effects on oxygenation and mechanics translate into better postoperative pulmonary function or improved outcomes...
April 24, 2017: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/28434545/opportunities-and-obstacles-in-translating-evidence-to-policy-in-occupational-asthma
#4
Susan M Tarlo, Ahmed A Arif, George L Delclos, Paul Henneberger, Jenil Patel
PURPOSE: Occupational asthma (OA), a common respiratory disorder in Western countries, is caused by exposures at the workplace. It is part of a broader definition of work-related asthma (WRA) that also includes pre-existing asthma aggravated by substances present in the workplace environment, and it is potentially preventable. The purpose of this paper is to illustrate preventive measures for occupational asthma by case studies. METHODS: In three case studies we discuss preventive measures that have been associated with reductions in incidence of occupational asthma from natural rubber latex and from diisocyanates as supported by published literature...
March 31, 2017: Annals of Epidemiology
https://www.readbyqxmd.com/read/28432539/early-onset-ventilator-associated-pneumonia-in-patients-with-severe-traumatic-brain-injury-incidence-risk-factors-and-consequences-in-cerebral-oxygenation-and-outcome
#5
Pierre Esnault, Cédric Nguyen, Julien Bordes, Erwan D'Aranda, Ambroise Montcriol, Claire Contargyris, Jean Cotte, Philippe Goutorbe, Christophe Joubert, Arnaud Dagain, Henry Boret, Eric Meaudre
BACKGROUND: Early-onset ventilator-associated pneumonia (EOVAP) occurs frequently in severe traumatic brain-injured patients, but potential consequences on cerebral oxygenation and outcome have been poorly studied. The objective of this study was to describe the incidence, risk factors for, and consequences on cerebral oxygenation and outcome of EOVAP after severe traumatic brain injury (TBI). METHODS: We conducted a retrospective, observational study including all intubated TBI admitted in the trauma center...
April 21, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/28431421/sevoflurane-posttreatment-attenuates-lung-injury-induced-by-oleic-acid-in-dogs
#6
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
#7
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/28429854/application-of-3c-insulin-pump-system-in-combination-with-non-invasive-ventilation-in-the-treatment-of-a-patient-with-type-2-diabetes-and-obstructive-sleep-apnea-syndrome
#8
Peng Dong, Jing Xu, Junhong Wang, Chunhong Zhang
We observed the curative effect of 3C insulin system in combination with non-invasive ventilation in a patient with type 2 diabetes and obstructive sleep apnea syndrome (OSAS). 3C insulin pump is a system of devices that closely monitors and effectively regulates blood glucose levels. Non-invasive ventilation has been shown to be an effective treatment for OSAS. A type 2 diabetic patient with concomitant OSAS was treated with a 3C insulin pump system for real-time continuous glucose monitoring and nocturnal non-invasive ventilation for OSAS...
April 21, 2017: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/28428256/regulation-of-lung-endothelial-permeability-and-inflammatory-responses-by-prostaglandin-a2-role-of-ep4-receptor
#9
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
#10
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/28424764/diffusion-tensor-imaging-colour-mapping-threshold-for-identification-of-ventilation-induced-brain-injury-after-intrauterine-inflammation-in-preterm-lambs
#11
Dhafer M Alahmari, Beatrice Skiöld, Samantha K Barton, Ilias Nitsos, Courtney McDonald, Suzanne L Miller, Valerie Zahra, Robert Galinsky, Qizhu Wu, Michael John Farrell, Timothy J Moss, Stuart B Hooper, James T Pearson, Graeme R Polglase
PURPOSE: The aim of this study is to examine whether advanced magnetic resonance imaging (MRI) techniques can detect early brain injury caused by intrauterine inflammation and inappropriate initial respiratory support in preterm lambs. HYPOTHESIS: Neuropathology caused by intrauterine inflammation is exacerbated by mechanical ventilation at birth and is detectable with advanced MRI techniques. METHODS: Pregnant ewes received intra-amniotic lipopolysaccharide (LPS) 7 days prior to delivery at ~125 days of gestation (85% of gestation), whereupon lambs were delivered and randomised to receive an injurious (LPS + INJ, n = 6) or protective (LPS + PROT, n = 6) ventilation strategy...
2017: Frontiers in Pediatrics
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
#12
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/28423189/computed-tomography-quantification-of-tracheal-abnormalities-in-copd-and-their-influence-on-airflow-limitation
#13
Leticia Gallardo Estrella, Esther Pompe, Jan-Martin Kuhnigk, David A Lynch, Surya P Bhatt, Bram van Ginneken, Eva Marjolein van Rikxoort
PURPOSE: To present a method to automatically quantify tracheal morphology changes during breathing and investigate its contribution to airflow impairment when adding CT measures of emphysema, airway wall thickness, air trapping and ventilation. METHODS: Because tracheal abnormalities often occur localized, a method is presented that automatically determines the most abnormal trachea section based on automatically computed sagittal and coronal lengths. In this most abnormal section, trachea morphology is encoded using four equiangular rays from the center of the trachea and the normalized lengths of these rays are used as features in a classification scheme...
April 17, 2017: Medical Physics
https://www.readbyqxmd.com/read/28422775/a-contemporary-assessment-of-acute-mechanical-ventilation-in-beijing-description-costs-and-outcomes
#14
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
#15
Noah Jones
No abstract text is available yet for this article.
April 19, 2017: Lab Animal
https://www.readbyqxmd.com/read/28420537/bilateral-versus-unilateral-antegrade-cerebral-perfusion-in-total-arch-replacement-for-type-a-aortic-dissection
#16
Guang Tong, Ben Zhang, Xuan Zhou, Ye Tao, Tao Yan, Xianyue Wang, Hua Lu, Zhongchan Sun, Weida Zhang
BACKGROUND: Antegrade cerebral perfusion (ACP) is the most widely used cerebral protection strategy for complex aortic repair and includes unilateral (u-ACP) and bilateral (b-ACP) techniques. The superiority of b-ACP over u-ACP has been the subject of much debate. Focusing on type A aortic dissection requiring total arch replacement, we investigated the clinical effects of b-ACP versus u-ACP. METHODS: Between September 2006 and August 2014, 203 patients presenting with type A aortic dissection (median age, 51...
March 12, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28406813/effects-of-hypercapnia-and-hypercapnic-acidosis-on-hospital-mortality-in-mechanically-ventilated-patients
#17
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/28406371/inhalation-exposure-during-spray-application-and-subsequent-sanding-of-a-wood-sealant-containing-zinc-oxide-nanoparticles
#18
Michael R Cooper, Gavin H West, Leonard G Burrelli, Daniel Dresser, Kelsey N Griffin, Alan M Segrave, Jon Perrenoud, Bruce E Lippy
Nano-enabled construction products have entered into commerce. There are concerns about the safety of manufactured nanomaterials, and exposure assessments are needed for a more complete understanding of risk. This study assessed potential inhalation exposure to ZnO nanoparticles during spray application and power sanding of a commercially available wood sealant and evaluated the effectiveness of local exhaust ventilation in reducing exposure. A tradesperson performed the spraying and sanding inside an environmentally-controlled chamber...
April 13, 2017: Journal of Occupational and Environmental Hygiene
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
#19
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/28401600/involvement-of-patients-perspectives-on-treatment-with-non-invasive-ventilation-in-patients-with-copd-a-qualitative-study
#20
Helle Marie Christensen, Lotte Huniche, Ingrid L Titlestad
AIMS AND OBJECTIVES: To clarify COPD patients' perspectives on treatment with non-invasive ventilation and develop management strategies for the treatment based on these perspectives. BACKGROUND: The effect of treating COPD patients with non-invasive ventilation is well documented, as is the problem of patient difficulties in tolerating the treatment. Knowledge of how patients with COPD experience and evaluate treatment with non-invasive ventilation is limited; therefore, more information of patient perspectives is needed to develop treatment practices in respiratory medicine...
April 12, 2017: Journal of Clinical Nursing
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