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https://www.readbyqxmd.com/read/28936695/early-application-of-airway-pressure-release-ventilation-may-reduce-the-duration-of-mechanical-ventilation-in-acute-respiratory-distress-syndrome
#1
Yongfang Zhou, Xiaodong Jin, Yinxia Lv, Peng Wang, Yunqing Yang, Guopeng Liang, Bo Wang, Yan Kang
PURPOSE: Experimental animal models of acute respiratory distress syndrome (ARDS) have shown that the updated airway pressure release ventilation (APRV) methodologies may significantly improve oxygenation, maximize lung recruitment, and attenuate lung injury, without circulatory depression. This led us to hypothesize that early application of APRV in patients with ARDS would allow pulmonary function to recover faster and would reduce the duration of mechanical ventilation as compared with low tidal volume lung protective ventilation (LTV)...
September 22, 2017: Intensive Care Medicine
https://www.readbyqxmd.com/read/28930639/50-years-of-research-in-ards-tidal-volume-selection-in-the-acute-respiratory-distress-syndrome
#2
Sarina K Sahetya, Jordi Mancebo, Roy G Brower
Mechanical ventilation (MV) is critical in the management of many patients with the acute respiratory distress syndrome (ARDS). However, MV can also cause ventilator-induced lung injury (VILI). The selection of an appropriate tidal volume is an essential part of a lung-protective MV strategy. Since the publication of a large randomized clinical trial demonstrating the benefit of lower tidal volumes, the use of tidal volumes of 6 mL/kg predicted body weight (PBW, based on sex and height) has been recommended in clinical practice guidelines...
September 20, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28910146/management-of-ards-and-refractory-hypoxemia-a-multicenter-observational-study
#3
Erick H Duan, Neill Kj Adhikari, Frederick D'Aragon, Deborah J Cook, Sangeeta Mehta, Waleed Alhazzani, Ewan Goligher, Emmanuel Charbonney, Yaseen M Arabi, Tim Karachi, Alexis F Turgeon, Lori Hand, Qi Zhou, Peggy Austin, Jan Friedrich, Francois Lamontagne, François Lauzier, Rakesh Patel, John Muscedere, Richard Hall, Pierre Aslanian, Thomas Piraino, Martin Albert, Sean M Bagshaw, Mike Jacka, Gordon Wood, William Henderson, Delbert Dorscheid, Niall D Ferguson, Maureen O Meade
RATIONALE: Clinicians' current practice patterns in the management of acute respiratory distress syndrome (ARDS) and refractory hypoxemia are not well described. OBJECTIVES: To describe mechanical ventilation strategies and treatment adjuncts for adults with ARDS including refractory hypoxemia. METHODS: Prospective cohort study (March 2014-February 2015) of mechanically ventilated adults with moderate-to-severe ARDS requiring FiO2 ≥0.50 in 24 ICUs...
September 14, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28888803/effects-of-pneumoperitoneum-and-of-an-alveolar-recruitment-maneuver-followed-by-positive-end-expiratory-pressure-on-cardiopulmonary-function-in-sheep-anesthetized-with-isoflurane-fentanyl
#4
Jéssica C Rodrigues, Francisco J Teixeira-Neto, Sofia A Cerejo, Nathalia Celeita-Rodríguez, Natache A Garofalo, Juliany G Quitzan, Thalita L A Rocha
OBJECTIVE: To investigate the effects of pneumoperitoneum alone or combined with an alveolar recruitment maneuver (ARM) followed by positive end-expiratory pressure (PEEP) on cardiopulmonary function in sheep. STUDY DESIGN: Prospective, randomized, crossover study. ANIMALS: A total of nine adult sheep (36-52 kg). METHODS: Sheep were administered three treatments (≥10-day intervals) during isoflurane-fentanyl anesthesia and volume-controlled ventilation (tidal volume: 12 mL kg(-1)) with oxygen: CONTROL (no intervention); PNEUMO (120 minutes of CO2 pneumoperitoneum); PNEUMOARM/PEEP (PNEUMO protocol with an ARM instituted after 60 minutes of pneumoperitoneum)...
June 7, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28875324/-extreme-obesity-particular-aspect-of-invasive-and-noninvasive-ventilation
#5
REVIEW
M Deppe, P Lebiedz
The obesity rate is increasing worldwide and the percentage of obese patients in the intensive care unit (ICU) is rising concomitantly. Ventilatory support strategies in obese patients must take into account the altered pathophysiological conditions. Unfortunately, prospective randomized multicenter trials on this subject are lacking. Therefore, current strategies are based on the individual experiences of ICU physicians and single-center studies. Noninvasive ventilation (NIV) in critically ill patients with acute respiratory failure and obesity hypoventilation syndrome (OHS) is an efficient treatment option and should be provided as early as possible is an effort to avoid intubation...
September 5, 2017: Medizinische Klinik, Intensivmedizin und Notfallmedizin
https://www.readbyqxmd.com/read/28846440/low-tidal-volume-versus-non-volume-limited-strategies-for-patients-with-acute-respiratory-distress-syndrome-a-systematic-review-and-meta-analysis
#6
Allan J Walkey, Ewan Goligher, Lorenzo Del Sorbo, Carol Hodgson, Neill Kj Adhikari, Hannah Wunsch, Maureen O Meade, Elizabeth Uleryk, Dean Hess, Daniel S Talmor, B Taylor Thompson, Roy G Brower, Eddy Fan
RATIONALE: Trials investigating use of lower tidal volumes and inspiratory pressures for patients with acute respiratory distress syndrome (ARDS) have shown mixed results. OBJECTIVES: To compare clinical outcomes of mechanical ventilation strategies that limit tidal volumes and inspiratory pressures (LTV) to strategies with tidal volumes of 10-15 mL/kg among patients with ARDS. METHODS: Systematic review and meta-analysis of clinical trials investigating LTV mechanical ventilation strategies...
August 28, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28828372/high-flow-nasal-oxygen-therapy-and-noninvasive-ventilation-in-the-management-of-acute-hypoxemic-respiratory-failure
#7
REVIEW
Jean-Pierre Frat, Rémi Coudroy, Nicolas Marjanovic, Arnaud W Thille
High-flow nasal cannula (HFNC) oxygen therapy is a recent technique delivering a high flow of heated and humidified gas. HFNC is simpler to use and apply than noninvasive ventilation (NIV) and appears to be a good alternative treatment for hypoxemic acute respiratory failure (ARF). HFNC is better tolerated than NIV, delivers high fraction of inspired oxygen (FiO2), generates a low level of positive pressure and provides washout of dead space in the upper airways, thereby improving mechanical pulmonary properties and unloading inspiratory muscles during ARF...
July 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28828361/driving-pressure-and-mechanical-power-new-targets-for-vili-prevention
#8
REVIEW
Tommaso Tonetti, Francesco Vasques, Francesca Rapetti, Giorgia Maiolo, Francesca Collino, Federica Romitti, Luigi Camporota, Massimo Cressoni, Paolo Cadringher, Michael Quintel, Luciano Gattinoni
Several factors have been recognized as possible triggers of ventilator-induced lung injury (VILI). The first is pressure (thus the 'barotrauma'), then the volume (hence the 'volutrauma'), finally the cyclic opening-closing of the lung units ('atelectrauma'). Less attention has been paid to the respiratory rate and the flow, although both theoretical considerations and experimental evidence attribute them a significant role in the generation of VILI. The initial injury to the lung parenchyma is necessarily mechanical and it could manifest as an unphysiological distortion of the extracellular matrix and/or as micro-fractures in the hyaluronan, likely the most fragile polymer embedded in the matrix...
July 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28803439/comparison-of-the-ability-of-escco-and-volume-view-to-measure-trends-in-cardiac-output-in-patients-undergoing-cardiac-surgery
#9
Stephanie Dache, Nicolas Van Rompaey, Alexandre Joosten, Olivier Desebbe, Sarah Saxena, Frederic Vanden Eynden, Caroline Van Aelbrouck, Isabelle Huybrechts, Luc Van Obbergh, Luc Barvais
BACKGROUND: Cardiac output (CO) is a physiological variable that should be monitored during cardiac surgery. The purpose of this study was to assess the trending ability of two CO monitors, esCCO (Nihon Kohden™, Tokyo, Japan) and Volume View (VV) (Edwards Lifesciences, Irvine, USA). METHODS: A total of 19 patients were included in the study. Before cardiopulmonary bypass (CPB), CO was measured simultaneously using both esCCO and VV devices before and after three CO-modifying manoeuvres (passive leg raise [PLR], the end expiratory occlusion test [EEOT] and positive end expiratory pressure [PEEP] at 10 cm H₂O)...
2017: Anaesthesiology Intensive Therapy
https://www.readbyqxmd.com/read/28800778/effects-of-intraoperative-peep-optimization-on-postoperative-pulmonary-complications-and-the-inflammatory-response-study-protocol-for-a-randomized-controlled-trial
#10
Zoltán Ruszkai, Erika Kiss, Ildikó László, Fanni Gyura, Erika Surány, Péter Töhötöm Bartha, Gergely Péter Bokrétás, Edit Rácz, István Buzogány, Zoltán Bajory, Erzsébet Hajdú, Zsolt Molnár
BACKGROUND: Patients undergoing general anesthesia and mechanical ventilation during major abdominal surgery commonly develop pulmonary atelectasis and/or hyperdistention of the lungs. Recent studies show benefits of lung-protective mechanical ventilation with the use of low tidal volumes, a moderate level of positive end-expiratory pressure (PEEP) and regular alveolar recruitment maneuvers during general anesthesia, even in patients with healthy lungs. The purpose of this clinical trial is to evaluate the effects of intraoperative lung-protective mechanical ventilation, using individualized PEEP values, on postoperative pulmonary complications and the inflammatory response...
August 11, 2017: Trials
https://www.readbyqxmd.com/read/28797752/efficacy-of-continuous-positive-airway-pressure-and-incentive-spirometry-on-respiratory-functions-during-the-postoperative-period-following-supratentorial-craniotomy-a-prospective-randomized-controlled-study
#11
Hulya Kahraman Sah, Eren Fatma Akcil, Yusuf Tunali, Hayriye Vehid, Ozlem Korkmaz Dilmen
STUDY OBJECTIVE: Volume controlled ventilation with low PEEP is used in neuro-anesthesia to provide constant PaCO2 levels and prevent raised intracranial pressure. Therefore, neurosurgery patients prone to atelectasis formation, however, we could not find any study that evaluates prevention of postoperative pulmonary complications in neurosurgery. DESIGN: A prospective, randomized controlled study. SETTING: Intensive care unit in a university hospital in Istanbul...
August 7, 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28775070/elevated-airway-liquid-volumes-at-birth-a-potential-cause-of-transient-tachypnea-of-the-newborn
#12
Erin Victoria McGillick, Katie Lee, Shigeo Yamaoka, Arjan B Te Pas, Kelly J Crossley, Megan J Wallace, Marcus John Kitchen, Robert A Lewis, Lauren T Kerr, Philip DeKoninck, Janneke Dekker, Marta Thio, Annie McDougall, Stuart B Hooper
Excessive liquid in airways and/or in distal lung tissue may underpin the respiratory morbidity associated with transient tachypnea of the newborn (TTN). However, its effects on lung aeration and respiratory function following birth are unknown. We investigated the effect of elevated airway liquid volumes on newborn respiratory function. Near term rabbit kittens (30 days gestation; term ~32 days) were delivered, had lung liquid drained and either had no liquid replaced (Control, n=7) or 30 mL/kg of liquid was re-added to the airways (liquid added; LA, n=7)...
August 3, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28770093/the-clinical-practice-guideline-for-the-management-of-ards-in-japan
#13
Satoru Hashimoto, Masamitsu Sanui, Moritoki Egi, Shinichiro Ohshimo, Junji Shiotsuka, Ryutaro Seo, Ryoma Tanaka, Yu Tanaka, Yasuhiro Norisue, Yoshiro Hayashi, Eishu Nango
BACKGROUND: The Japanese Society of Respiratory Care Medicine and the Japanese Society of Intensive Care Medicine provide here a clinical practice guideline for the management of adult patients with ARDS in the ICU. METHOD: The guideline was developed applying the GRADE system for performing robust systematic reviews with plausible recommendations. The guideline consists of 13 clinical questions mainly regarding ventilator settings and drug therapies (the last question includes 11 medications that are not approved for clinical use in Japan)...
2017: Journal of Intensive Care
https://www.readbyqxmd.com/read/28768153/effects-of-mechanical-ventilation-on-gene-expression-profiles-in-renal-allografts-from-brain-dead-rats
#14
Maximilia C Hottenrott, Joerg Krebs, Paolo Pelosi, Thomas Luecke, Patricia R M Rocco, Carsten Sticht, Annette Breedijk, Benito Yard, Charalambos Tsagogiorgas
Pathophysiological changes of brain death (BD) are impairing distal organ function and harming potential renal allografts. Whether ventilation strategies influence the quality of renal allografts from BD donors has not been thoroughly studied. 28 adult male Wistar rats were randomly assigned to four groups: 1) no brain death (NBD) with low tidal volume/low positive endexpiratory pressure (PEEP) titrated to minimal static elastance of the respiratory system (LVT/OLPEEP); 2) NBD with high tidal volume/low PEEP (HVT/LPEEP); 3) brain death (BD) with LVT/OLPEEP; and 4) BD with HVT/LPEEP...
July 30, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28759484/impact-of-different-ventilation-strategies-on-driving-pressure-mechanical-power-and-biological-markers-during-open-abdominal-surgery-in-rats
#15
Lígia de A Maia, Cynthia S Samary, Milena V Oliveira, Cintia L Santos, Robert Huhle, Vera L Capelozzi, Marcelo M Morales, Marcus J Schultz, Marcelo G Abreu, Paolo Pelosi, Pedro L Silva, Patricia Rieken Macedo Rocco
BACKGROUND: Intraoperative mechanical ventilation may yield lung injury. To date, there is no consensus regarding the best ventilator strategy for abdominal surgery. We aimed to investigate the impact of the mechanical ventilation strategies used in 2 recent trials (Intraoperative Protective Ventilation [IMPROVE] trial and Protective Ventilation using High versus Low PEEP [PROVHILO] trial) on driving pressure (ΔPRS), mechanical power, and lung damage in a model of open abdominal surgery...
October 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28757912/lung-protective-ventilation-strategies-for-relief-from-ventilator-associated-lung-injury-in-patients-undergoing-craniotomy-a-bicenter-randomized-parallel-and-controlled-trial
#16
Chaoliang Tang, Juan Li, Shaoqing Lei, Bo Zhao, Zhetao Zhang, Wenting Huang, Si Shi, Xiaoqing Chai, Chaoshi Niu, Zhongyuan Xia
Current evidence indicates that conventional mechanical ventilation often leads to lung inflammatory response and oxidative stress, while lung-protective ventilation (LPV) minimizes the risk of ventilator-associated lung injury (VALI). This study evaluated the effects of LPV on relief of pulmonary injury, inflammatory response, and oxidative stress among patients undergoing craniotomy. Sixty patients undergoing craniotomy received either conventional mechanical (12 mL/kg tidal volume [VT] and 0 cm H2O positive end-expiratory pressure [PEEP]; CV group) or protective lung (6 mL/kg VT and 10 cm H2O PEEP; PV group) ventilation...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28743335/-regulation-of-paxillin-tyrosine-phosphorylation-via-inhibition-of-c-abl-kinase-to-protect-ventilator-induce-lung-injury-in-vivo-in-rats
#17
Rong Zhong, Jun Xiao, Chunguang Dai, Zhihui Yu
OBJECTIVE: To determine whether the inhibition of paxillin tyrosine residues 31 and tyrosine residues 118 (Pxn Y31 and Pxn Y118) phosphorylation via inhibition of c-Abl kinase will effectively block its downstream effector molecules vessel endothelium-cadherin (VE-cad), and whether Rho/Rho kinase activation which will induce the vascular barrier dysfunction. METHODS: Ninety healthy male Sprague-Dawley (SD) rats were randomly divided into nine groups (each n =10)...
July 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28742775/estimation-of-stroke-volume-and-stroke-volume-changes-by-electrical-impedance-tomography
#18
Fernando José da Silva Ramos, André Hovnanian, Rogério Souza, Luciano C P Azevedo, Marcelo B P Amato, Eduardo L V Costa
BACKGROUND: Electrical impedance tomography (EIT) is a noninvasive imaging method that identifies changes in air and blood volume based on thoracic impedance changes. Recently, there has been growing interest in EIT to measure stroke volume (SV). The objectives of this study are as follows: (1) to evaluate the ability of systolic impedance variations (ΔZsys) to track changes in SV in relation to a baseline condition; (2) to assess the relationship of ΔZsys and SV in experimental subjects; and (3) to identify the influence of body dimensions on the relationship between ΔZsys and SV...
July 24, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28730574/mechanical-ventilation-guided-by-electrical-impedance-tomography-in-pediatric-acute-respiratory-distress-syndrome
#19
Jeffrey Dmytrowich, Tanya Holt, Karen Schmid, Gregory Hansen
Mechanical ventilation strategies in pediatric acute respiratory distress syndrome (pARDS) continue to advance. Optimizing positive end expiratory pressure (PEEP) and ventilation to recruitable lung can be difficult to clinically achieve. This is in part, due to disease evolution, unpredictable changes in lung compliance, and the inability to assess regional tidal volumes in real time at the bedside. Here we report the utilization of thoracic electrical impedance tomography to guide daily PEEP settings and recruitment maneuvers in a child with pARDS...
July 20, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28730554/bedside-selection-of-positive-end-expiratory-pressure-by-electrical-impedance-tomography-in-hypoxemic-patients-a-feasibility-study
#20
Nilde Eronia, Tommaso Mauri, Elisabetta Maffezzini, Stefano Gatti, Alfio Bronco, Laura Alban, Filippo Binda, Tommaso Sasso, Cristina Marenghi, Giacomo Grasselli, Giuseppe Foti, Antonio Pesenti, Giacomo Bellani
BACKGROUND: Positive end-expiratory pressure (PEEP) is a key element of mechanical ventilation. It should optimize recruitment, without causing excessive overdistension, but controversy exists on the best method to set it. The purpose of the study was to test the feasibility of setting PEEP with electrical impedance tomography in order to prevent lung de-recruitment following a recruitment maneuver. We enrolled 16 patients undergoing mechanical ventilation with PaO2/FiO2 <300 mmHg...
December 2017: Annals of Intensive Care
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