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https://www.readbyqxmd.com/read/29158922/hypoxemic-respiratory-failure-from-acute-respiratory-distress-syndrome-secondary-to-leptospirosis
#1
Shannon M Fernando, Pierre Cardinal, Peter G Brindley
Acute respiratory distress syndrome (ARDS), characterized by hypoxemic respiratory failure, is associated with a mortality of 30-50% and is precipitated by both direct and indirect pulmonary insults. Treatment is largely supportive, consisting of lung protective ventilation and thereby necessitating Intensive Care Unit (ICU) admission. The most common precipitant is community-acquired bacterial pneumonia, but other putative pathogens include viruses and fungi. On rare occasions, ARDS can be secondary to tropical disease...
2017: Case Reports in Critical Care
https://www.readbyqxmd.com/read/29138816/protective-effects-of-fucoidan-against-hyperoxic-lung-injury-via-the-erk-signaling-pathway
#2
Minghao Nie, Yan Wang, Yanhong Lu, Ying Yuan, Yingying Liu, Xiurong Li
High oxygen mechanical ventilation is widely used to treat various lung diseases; however, it may result in hyperoxia, which induces inflammation and lung injury. Fucoidan is an extract of the seaweed Fucus vesiculosus, which has previously been reported to exert effects against diabetic nephropathy. The present study is the first, to the best of our knowledge, to investigate the protective effects of fucoidan against hyperoxic lung injury. Balb/c mice were ventilated with 100% oxygen, with or without the atomization inhalation of fucoidan, for 36 h...
November 10, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29134246/does-high-peep-prevent-alveolar-cycling
#3
REVIEW
M Cressoni, C Chiurazzi, D Chiumello, L Gattinoni
Acute respiratory distress syndrome (ARDS) patients need mechanical ventilation to sustain gas exchange. Animal experiments showed that mechanical ventilation with high volume/plateau pressure and no positive end-expiratory pressure (PEEP) damages healthy lungs, while low tidal volumes and the application of higher PEEP levels are protective. PEEP makes the lung homogeneous, reducing the pressure multiplication at the interface between lung units with different inflation statuses and keeps the lung open through the whole respiratory cycle, avoiding intratidal opening and closing...
November 13, 2017: Medizinische Klinik, Intensivmedizin und Notfallmedizin
https://www.readbyqxmd.com/read/29132435/vasculotide-reduces-pulmonary-hyperpermeability-in-experimental-pneumococcal-pneumonia
#4
Birgitt Gutbier, Xiaohui Jiang, Kristina Dietert, Carolin Ehrler, Jasmin Lienau, Paul Van Slyke, Harold Kim, Van C Hoang, Jason T Maynes, Daniel J Dumont, Achim D Gruber, Norbert Weissmann, Timothy J Mitchell, Norbert Suttorp, Martin Witzenrath
BACKGROUND: Community-acquired pneumonia (CAP) is a significant cause of morbidity and mortality worldwide. Despite effective antimicrobial therapy, CAP can induce pulmonary endothelial hyperpermeability resulting in life-threatening lung failure due to an exaggerated host-pathogen interaction. Treatment of acute lung injury is mainly supportive because key elements of inflammation-induced barrier disruption remain undetermined. Angiopoietin-1 (Ang-1)-mediated Tie2 activation reduces, and the Ang-1 antagonist Ang-2 increases, inflammation and endothelial permeability in sepsis...
November 13, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/29121283/postoperative-pulmonary-complications-pulmonary-and-systemic-inflammatory-responses-after-lung-resection-surgery-with-prolonged-one-lung-ventilation-randomized-controlled-trial-comparing-intravenous-and-inhalational-anaesthesia
#5
F de la Gala, P Piñeiro, A Reyes, E Vara, L Olmedilla, P Cruz, I Garutti
Background: Recent studies report the immunomodulatory lung-protective role of halogenated anaesthetics during lung resection surgery (LRS) but have not investigated differences in clinical postoperative pulmonary complications (PPCs). The main goal of the present study was to compare the effect of sevoflurane and propofol on the incidence of PPCs in patients undergoing LRS. The second aim was to compare pulmonary and systemic inflammatory responses to LRS. Methods: Of 180 patients undergoing LRS recruited, data from 174 patients were analysed...
October 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29118026/carbon-monoxide-in-lung-cell-physiology-and-disease
#6
Stefan W Ryter, Kevin C Ma, Augustine M K Choi
Carbon monoxide (CO) is an endogenously produced gas that has gained recognition as a biological signal transduction effector with properties similar, but not identical, to that of nitric oxide (NO). CO, which binds primarily to heme iron, may activate the hemoprotein guanylate cyclase (sGC), although with lower potency than NO. Furthermore, CO can modulate the activities of several cellular signaling molecules such as p38 MAPK, ERK1/2, JNK, AKT, NF-κB, and others. Emerging studies suggest that mitochondria, the energy-generating organelle of cells, represent a key target of CO action in eukaryotes...
November 8, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/29112971/effects-of-positive-end-expiratory-pressure-and-recruitment-maneuvers-in-a-ventilator-induced-injury-mouse-model
#7
Laura A Cagle, Lisa M Franzi, Angela L Linderholm, Jerold A Last, Jason Y Adams, Richart W Harper, Nicholas J Kenyon
BACKGROUND: Positive-pressure mechanical ventilation is an essential therapeutic intervention, yet it causes the clinical syndrome known as ventilator-induced lung injury. Various lung protective mechanical ventilation strategies have attempted to reduce or prevent ventilator-induced lung injury but few modalities have proven effective. A model that isolates the contribution of mechanical ventilation on the development of acute lung injury is needed to better understand biologic mechanisms that lead to ventilator-induced lung injury...
2017: PloS One
https://www.readbyqxmd.com/read/29110799/acute-postoperative-management-after-lung-transplantation
#8
REVIEW
Christopher Potestio, Desmond Jordan, Bessie Kachulis
Despite many advances in the field of lung transplantation, lung transplant recipients have the lowest median survival of any solid organ transplant population. Complications such as reperfusion injury, graft rejection, infection, and anastomotic breakdown increase morbidity and mortality during the immediate postoperative period. Ventilator management with lung protective strategies can not only minimize ventilator time and mitigate the risk of ventilator-associated pneumonia, but it may also decrease the risk of primary graft dysfunction and graft failure...
June 2017: Best Practice & Research. Clinical Anaesthesiology
https://www.readbyqxmd.com/read/29099451/the-quest-for-the-holy-grail-of-optimizing-mechanical-ventilation-and-protecting-the-lung-in-mechanically-ventilated-infants-and-children
#9
Shekhar T Venkataraman
No abstract text is available yet for this article.
November 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/29096562/alpha-1-antitrypsin-ameliorates-ventilator-induced-lung-injury-in-rats-by-inhibiting-inflammatory-responses-and-apoptosis
#10
He Zhu, Jianshuai He, Jia Liu, Xin Zhang, Fengyun Yang, Pingting Liu, Shilei Wang
Mechanical ventilation is extensively used to treat patients with lung injury but may result in ventilator-induced lung injury (VILI). The present study investigated the protective effect of alpha 1-antitrypsin (AAT) on VILI. Adult male rats were subjected to sham, ventilation + saline, or ventilation + AAT treatment and lung injuries were evaluated. Peripheral blood and bronchoalveolar lavage fluid (BALF) were obtained to assess systemic and local inflammatory responses, respectively. Mechanical ventilation resulted in lung injury, as evidenced by histological abnormalities as well as elevations in PaO2/FiO2 ratio, the wet-to-dry weight ratio, and the BALF level of proteins...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29089468/protective-effect-of-htk-solution-on-postoperative-pulmonary-function-in-infants-with-chd-and-pah
#11
Jindong Li, Yanhong Wu, Xudong Tian, Jiantang Wang, Mingfeng Dong, Anbiao Wang
Objective In this study, we aimed to investigate the effect of pulmonary arterial perfusion (PAP) with HTK on lung protection in infants with congenital heart disease (CHD) and pulmonary arterial hypertension (PAH) after cardiopulmonary bypass (CPB). Methods Fifty infant patients with CHD and PAH at our hospital from January 2016 to February 2017 were randomly divided into control group and HTK group. The level of IL-6, MDA and ET-1 in serum were detected using ELISA Kit. Oxygen index (OI) and respiratory index (RI) were calculated at each time point...
October 31, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/29089125/particle-related-exposure-dose-and-lung-cancer-risk-of-primary-school-children-in-two-european-countries
#12
A Pacitto, L Stabile, M Viana, M Scungio, C Reche, X Querol, A Alastuey, I Rivas, M Álvarez-Pedrerol, J Sunyer, B L van Drooge, J O Grimalt, R Sozzi, P Vigo, G Buonanno
Schools represent a critical microenvironment in terms of air quality due to the proximity to outdoor particle sources and the frequent lack of proper ventilation and filtering systems. Moreover, the population exposed in schools (i.e. children) represents a susceptible population due to their age. Air quality-based studies involving students' exposure at schools are still scarce and often limited to mass-based particle metrics and may thus underestimate the possible effect of sub-micron particles and particle toxicity...
October 28, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29078905/sphingosine-rescues-aged-mice-from-pulmonary-pseudomonas-infection
#13
Teresa C Rice, Amanda M Pugh, Aaron P Seitz, Erich Gulbins, Vanessa Nomellini, Charles C Caldwell
BACKGROUND: Bacterial lung infection is a leading cause of death for those 65 y or older, often requiring intensive care unit admission and mechanical ventilation, which consumes considerable health care resources. Although administration of antibiotics is the standard of care for bacterial pneumonia, its overuse has led to the emergence of multidrug resistant organisms. Therefore, alternative strategies to help minimize the effects of bacterial pneumonia in the elderly are necessary...
November 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/29078756/effects-of-lung-protective-mechanical-ventilation-associated-with-permissive-respiratory-acidosis-on-regional-extra-pulmonary-blood-flow-in-experimental-ards
#14
Rudolf Hering, Stefan Kreyer, Christian Putensen
BACKGROUND: Lung protective mechanical ventilation with limited peak inspiratory pressure has been shown to affect cardiac output in patients with ARDS. However, little is known about the impact of lung protective mechanical ventilation on regional perfusion, especially when associated with moderate permissive respiratory acidosis. We hypothesized that lung protective mechanical ventilation with limited peak inspiratory pressure and moderate respiratory acidosis results in an increased cardiac output but unequal distribution of blood flow to the different organs of pigs with oleic-acid induced ARDS...
October 27, 2017: BMC Anesthesiology
https://www.readbyqxmd.com/read/29072320/technical-note-correction-for-the-effect-of-breathing-variations-in-ct-pulmonary-ventilation-imaging
#15
Tokihiro Yamamoto, Sven Kabus
PURPOSE: The accuracy and precision of computed tomography (CT) pulmonary ventilation imaging with conventional CT scanners are limited by breathing variations. We propose a method to correct for the effect of breathing variations in CT ventilation imaging based on external respiratory signals acquired throughout a scan. METHODS: The proposed method is based on: (1) calculating voxel-by-voxel abdominal surface motion ranges using four-dimensional (4D) CT image datasets spatiotemporally correlated with external respiratory monitor data, and (2) applying the correction factor, which is defined as the ratio of the overall mean of the abdominal surface motion range in the lungs to that of each voxel, to the CT ventilation value...
October 26, 2017: Medical Physics
https://www.readbyqxmd.com/read/29068269/prone-position-for-acute-respiratory-distress-syndrome-a-systematic-review-and-meta-analysis
#16
Laveena Munshi, Lorenzo Del Sorbo, Neill K J Adhikari, Carol L Hodgson, Hannah Wunsch, Maureen O Meade, Elizabeth Uleryk, Jordi Mancebo, Antonio Pesenti, V Marco Ranieri, Eddy Fan
RATIONALE: The application of prone positioning for acute respiratory distress syndrome (ARDS) has evolved, with recent trials focusing on patients with more severe ARDS, and applying prone ventilation for more prolonged periods. OBJECTIVES: This review evaluates the effect of prone positioning on 28-day mortality (primary outcome) compared with conventional mechanical ventilation in the supine position for adults with ARDS. METHODS: We updated the literature search from a systematic review published in 2010, searching MEDLINE, EMBASE, and CENTRAL (through to August 2016)...
October 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29059883/monitoring-of-cardiac-output-and-lung-ventilation-by-electrical-impedance-tomography-in-a-porcine-model-of-acute-lung-injury
#17
Nadine Hochhausen, Henriette Dohmeier, Rolf Rossaint, Michael Czaplik
Adequate medical treatment of the Acute Respiratory Distress Syndrome is still challenging since patient-individual aspects have to be taken into account. Lung protective ventilation and hemodynamic stability have always been two of the most crucial aims of intensive care therapy. For both aspects, a continuous - preferably non-invasive - monitoring is desirable that is available at the bedside. Unfortunately, there is no technique clinically established yet, that provides both measurement of cardiac stroke volume and ventilation dynamics in real-time...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29059882/imaging-of-regional-air-distributions-in-porcine-lungs-using-high-performance-electrical-impedance-tomography-system
#18
G Y Jang, Y B Kim, H Wi, T I Oh, C R Chung, G Y Suh, E J Woo
Electrical impedance tomography (EIT) allows functional imaging of regional lung ventilation for real-time bedside monitoring of mechanically ventilated patients. Images showing time-changes of regional air distributions in the lungs can provide valuable diagnostic information for lung protective mechanical ventilation. This paper reports in vivo porcine imaging experiments of regional lung ventilation using a 16-channel parallel EIT system. Real-time time-difference chest images of 10 animals were reconstructed during mechanical ventilations with a temporal resolution of 50 frame/s...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29050431/a-study-on-the-sternum-growth-and-mineralization-kinetic-of-meat-duck-from-35-to-63-days-of-age
#19
H Y Zhang, H Liao, Q F Zeng, J P Wang, X M Ding, S P Bai, K Y Zhang
The sternum as an important part of the skeleton and not only provides a crucial attachment site for the pectoral muscles and protects internal organs such as the heart and lungs for meat duck, but may also be considered as the primary ventilator in the avian respiratory system. Therefore, this study focuses on the sternum growth and mineralization kinetics of ducks from 35 d to 63 d of age. A total of 72 one-d-old males and 72 females were chosen and fed with the same diet until the age of 9 weeks. The sternum and serum were harvested at 35 d, 42 d, 49 d, 56d, and 63 d of feeding...
September 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/29049686/national-practice-variation-in-pneumonectomy-perioperative-care-among-canadian-thoracic-surgeons
#20
Biniam Kidane, John K Peel, Andrew Seely, Richard A Malthaner, Christian Finley, Sean Grondin, Brian E Louie, Sadeesh Srinathan, Gail E Darling
OBJECTIVES: Our objective was to assess perioperative pneumonectomy practices among Canadian thoracic surgeons as part of a quality-improvement initiative to determine practice variability and identify areas for study/improvement. METHODS: After several rounds of survey development and piloting, a 29-item survey was distributed using the Dillman method to all practicing members of the Canadian Association of Thoracic Surgeons. RESULTS: The response rate was 87% (62 of 71)...
July 28, 2017: Interactive Cardiovascular and Thoracic Surgery
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