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https://www.readbyqxmd.com/read/28917004/critical-illness-associated-diaphragm-weakness
#1
REVIEW
Martin Dres, Ewan C Goligher, Leo M A Heunks, Laurent J Brochard
Diaphragm weakness is highly prevalent in critically ill patients. It may exist prior to ICU admission and may precipitate the need for mechanical ventilation but it also frequently develops during the ICU stay. Several risk factors for diaphragm weakness have been identified; among them sepsis and mechanical ventilation play central roles. We employ the term critical illness-associated diaphragm weakness to refer to the collective effects of all mechanisms of diaphragm injury and weakness occurring in critically ill patients...
September 15, 2017: Intensive Care Medicine
https://www.readbyqxmd.com/read/28899408/respiratory-support-in-patients-with-acute-respiratory-distress-syndrome-an-expert-opinion
#2
REVIEW
Davide Chiumello, Laurent Brochard, John J Marini, Arthur S Slutsky, Jordi Mancebo, V Marco Ranieri, B Taylor Thompson, Laurent Papazian, Marcus J Schultz, Marcelo Amato, Luciano Gattinoni, Alain Mercat, Antonio Pesenti, Daniel Talmor, Jean-Louis Vincent
Acute respiratory distress syndrome (ARDS) is a common condition in intensive care unit patients and remains a major concern, with mortality rates of around 30-45% and considerable long-term morbidity. Respiratory support in these patients must be optimized to ensure adequate gas exchange while minimizing the risks of ventilator-induced lung injury. The aim of this expert opinion document is to review the available clinical evidence related to ventilator support and adjuvant therapies in order to provide evidence-based and experience-based clinical recommendations for the management of patients with ARDS...
September 12, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28887457/spinal-mirna-124-regulates-synaptopodin-and-nociception-in-an-animal-model-of-bone-cancer-pain
#3
Sara Elramah, María José López-González, Matthieu Bastide, Florence Dixmérias, Olivier Roca-Lapirot, Anne-Cécile Wielanek-Bachelet, Anne Vital, Thierry Leste-Lasserre, Alexandre Brochard, Marc Landry, Alexandre Favereaux
Strong breakthrough pain is one of the most disabling symptoms of cancer since it affects up to 90% of cancer patients and is often refractory to treatments. Alteration in gene expression is a known mechanism of cancer pain in which microRNAs (miRNAs), a class of non-coding regulatory RNAs, play a crucial role. Here, in a mouse model of cancer pain, we show that miR-124 is down-regulated in the spinal cord, the first relay of the pain signal to the brain. Using in vitro and in vivo approaches, we demonstrate that miR-124 is an endogenous and specific inhibitor of synaptopodin (Synpo), a key protein for synaptic transmission...
September 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28884469/cancer-of-the-esophagus-and-asbestos-exposure
#4
Bénédicte Clin, Isabelle Thaon, Mathilde Boulanger, Patrick Brochard, Soizick Chamming's, Antoine Gislard, Aude Lacourt, Amandine Luc, Guy Ogier, Christophe Paris, Jean-Claude Pairon
BACKGROUND: Our study aimed at analyzing incidence and mortality from esophageal cancer within a cohort of workers with previous occupational asbestos exposure (ARDCo Program). METHODS: A 10-year follow-up study was conducted in the 14 515 male subjects included in this program between October 2003 and December 2005. Follow-up began when exposure stopped. Asbestos exposure was analyzed by industrial hygienists using data from a standardized questionnaire. The Cox model was used, with age as the time axis variable adjusted for smoking, time since first exposure (TSFE) and cumulative exposure index (CEI) of exposure to asbestos...
September 7, 2017: American Journal of Industrial Medicine
https://www.readbyqxmd.com/read/28881904/human-papillomavirus-does-not-play-a-role-in-the-barrett-esophagus-a-french-cohort
#5
C Brochard, A Ducancelle, A Pivert, M Bodin, A Ricard, E Coron, C Couffon, N Dib, D Luet, N Musquer, M Le Rhun, S Bertrais, S Michalak, F Lunel-Fabiani, E Cesbron-Metivier, F-X Caroli Bosc
The role of human papillomavirus (HPV) in Barrett's esophagus (BE) has been examined but remains unclear. The purpose of the study is to dispute the connection between HPV and BE in a prospective case-control study. Biopsies were performed above and inside the Barrett's segment for BE patients and in the distal third of the esophagus for control patients for histological interpretation and for virological analysis. Biopsies for virological analysis were placed in a virus transport medium and immediately frozen in liquid nitrogen...
November 1, 2017: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/28880165/power-spectrum-computation-for-an-arbitrary-phase-noise-using-middleton-s-convolution-series-implementation-guideline-and-experimental-illustration
#6
Pierre Brochard, Thomas Sudmeyer, Stephane Schilt
In this work, we revisit the convolution series initially introduced by Middleton several decades ago to determine the power spectrum (or spectral lineshape) of a periodic signal from its phase noise power spectral density. This topic is of wide interest as it has an important impact in many scientific areas that involve lasers and oscillators. We introduce a simple guideline that enables a fairly straightforward computation of the power spectrum corresponding to an arbitrary phase noise. We show the benefit of this approach on a computational point of view, and apply it to various types of experimental signals with different phase noise levels, showing a very good agreement with the experimental spectra...
August 31, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28870355/mechanical-ventilation-state-of-the-art
#7
REVIEW
Tài Pham, Laurent J Brochard, Arthur S Slutsky
Mechanical ventilation is the most used short-term life support technique worldwide and is applied daily for a diverse spectrum of indications, from scheduled surgical procedures to acute organ failure. This state-of-the-art review provides an update on the basic physiology of respiratory mechanics, the working principles, and the main ventilatory settings, as well as the potential complications of mechanical ventilation. Specific ventilatory approaches in particular situations such as acute respiratory distress syndrome and chronic obstructive pulmonary disease are detailed along with protective ventilation in patients with normal lungs...
September 2017: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/28860265/official-ers-ats-clinical-practice-guidelines-noninvasive-ventilation-for-acute-respiratory-failure
#8
Bram Rochwerg, Laurent Brochard, Mark W Elliott, Dean Hess, Nicholas S Hill, Stefano Nava, Paolo Navalesi, Massimo Antonelli, Jan Brozek, Giorgio Conti, Miquel Ferrer, Kalpalatha Guntupalli, Samir Jaber, Sean Keenan, Jordi Mancebo, Sangeeta Mehta, Suhail Raoof
Noninvasive mechanical ventilation (NIV) is widely used in the acute care setting for acute respiratory failure (ARF) across a variety of aetiologies. This document provides European Respiratory Society/American Thoracic Society recommendations for the clinical application of NIV based on the most current literature.The guideline committee was composed of clinicians, methodologists and experts in the field of NIV. The committee developed recommendations based on the GRADE (Grading, Recommendation, Assessment, Development and Evaluation) methodology for each actionable question...
August 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28842719/ten-tips-to-facilitate-understanding-and-clinical-use-of-esophageal-pressure-manometry
#9
Takeshi Yoshida, Laurent Brochard
No abstract text is available yet for this article.
August 25, 2017: Intensive Care Medicine
https://www.readbyqxmd.com/read/28828360/transpulmonary-pressure-importance-and-limits
#10
REVIEW
Domenico Luca Grieco, Lu Chen, Laurent Brochard
Transpulmonary pressure (PL) is computed as the difference between airway pressure and pleural pressure and separates the pressure delivered to the lung from the one acting on chest wall and abdomen. Pleural pressure is measured as esophageal pressure (PES) through dedicated catheters provided with esophageal balloons. We discuss the role of PL in assessing the effects of mechanical ventilation in patients with acute respiratory distress syndrome (ARDS). In the supine position, directly measured PL represents the pressure acting on the alveoli and airways...
July 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28783492/shoulder-muscle-atrophy-and-its-relation-to-strength-loss-in-obstetrical-brachial-plexus-palsy
#11
Christelle Pons, Frances T Sheehan, Hyun Soo Im, Sylvain Brochard, Katharine E Alter
BACKGROUND: Treatment/prevention of shoulder muscle strength imbalances are major therapeutic goals for children with obstetrical brachial plexus palsy. The study aims were to characterize muscle atrophy in children/adolescents with unilateral obstetrical brachial plexus palsy, to quantify the agonist-antagonist muscle volume balance and the association between muscle volume and strength. METHODS: Eight boys and four girls (age=12.1, standard deviation=3.3) participated in this case-control study...
July 27, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28767269/reply-to-can-the-wind-definition-classify-all-invasively-ventilated-patients
#12
Gaëtan Béduneau, Tài Pham, Laurent Brochard
No abstract text is available yet for this article.
August 2, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28742375/continuous-negative-abdominal-pressure-recruits-lungs-at-lower-distending-pressures
#13
Takeshi Yoshida, Doreen Engelberts, Gail Otulakowski, Bhushan Katira, Martin Post, Niall D Ferguson, Laurent Brochard, Marcelo B P Amato, Brian P Kavanagh
No abstract text is available yet for this article.
July 25, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28728412/role-of-interfaces-in-elasticity-and-failure-of-clay-organic-nanocomposites-toughening-upon-interface-weakening
#14
György Hantal, Laurent Brochard, Roland J-M Pellenq, Franz-Joseph Ulm, Benoit Coasne
Synthetic organic-inorganic composites constitute a new class of engineering materials finding applications in an increasing range of fields. The interface between the constituting phases plays a pivotal role in the enhancement of mechanical properties. In exfoliated clay-organic nanocomposites, individual, high aspect ratio clay sheets are dispersed in the organic matrix providing large interfaces and hence efficient stress transfer. In this study, we aim at elucidating molecular-scale reinforcing mechanisms in a series of model clay-organic composite systems by means of reactive molecular simulations...
August 3, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28633598/metabolism-of-inhaled-methylethylketone-in-rats
#15
Frédéric Cosnier, Stéphane Grossmann, Hervé Nunge, Céline Brochard, Samuel Muller, Anne-Marie Lambert-Xolin, Sylvie Sebillaud, Benoît Rieger, Aurélie Thomas, Marie-Josèphe Décret, Manuella Burgart, Laurent Gaté, Benoît Cossec, Pierre Campo
Methylethylketone (MEK) is widely used in industry, often in combination with other compounds. Although nontoxic, it can make other chemicals harmful. This study investigates the fate of MEK in rat blood, brain and urine as well as its hepatic metabolism following inhalation over 1 month (at 20, 200 or 1400 ppm). MEK did not significantly accumulate in the organism: blood concentrations were similar after six-hour or 1-month inhalation periods, and brain concentrations only increased slightly after 1 month's exposure...
February 28, 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/28631088/etiologies-diagnostic-work-up-and-outcomes-of-acute-respiratory-distress-syndrome-with-no-common-risk-factor-a-prospective-multicenter-study
#16
Nicolas de Prost, Tài Pham, Guillaume Carteaux, Armand Mekontso Dessap, Christian Brun-Buisson, Eddy Fan, Giacomo Bellani, John Laffey, Alain Mercat, Laurent Brochard, Bernard Maître
BACKGROUND: Patients meeting the Berlin definition for the acute respiratory distress syndrome (ARDS) might lack exposure to one or more "common" risk factors and exhibit different clinical phenotype and outcomes. We aimed to compare the clinical presentation and outcome of ARDS patients with or without risk factors, the impact on hospital mortality, and to assess the diagnostic work-up performed. The current study is an ancillary analysis of an international, multicenter, prospective cohort study (the Large Observational Study to Understand the Global Impact of Severe Acute Respiratory Failure, LUNG SAFE)...
December 2017: Annals of Intensive Care
https://www.readbyqxmd.com/read/28624388/geo-economic-variations-in-epidemiology-patterns-of-care-and-outcomes-in-patients-with-acute-respiratory-distress-syndrome-insights-from-the-lung-safe-prospective-cohort-study
#17
John G Laffey, Fabiana Madotto, Giacomo Bellani, Tài Pham, Eddy Fan, Laurent Brochard, Pravin Amin, Yaseen Arabi, Ednan K Bajwa, Alejandro Bruhn, Vladimir Cerny, Kevin Clarkson, Leo Heunks, Kiyoyasu Kurahashi, Jon Henrik Laake, Jose A Lorente, Lia McNamee, Nicolas Nin, Jose Emmanuel Palo, Lise Piquilloud, Haibo Qiu, Juan Ignacio Silesky Jiménez, Andres Esteban, Daniel F McAuley, Frank van Haren, Marco Ranieri, Gordon Rubenfeld, Hermann Wrigge, Arthur S Slutsky, Antonio Pesenti
BACKGROUND: Little information is available about the geo-economic variations in demographics, management, and outcomes of patients with acute respiratory distress syndrome (ARDS). We aimed to characterise the effect of these geo-economic variations in patients enrolled in the Large Observational Study to Understand the Global Impact of Severe Acute Respiratory Failure (LUNG SAFE). METHODS: LUNG SAFE was done during 4 consecutive weeks in winter, 2014, in a convenience sample of 459 intensive-care units in 50 countries across six continents...
August 2017: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/28624281/short-communication-genetic-parameters-for-milk-protein-composition-predicted-using-mid-infrared-spectroscopy-in-the-french-montb%C3%A3-liarde-normande-and-holstein-dairy-cattle-breeds
#18
M P Sanchez, M Ferrand, M Gelé, D Pourchet, G Miranda, P Martin, M Brochard, D Boichard
Genetic parameters for the major milk proteins were estimated in the 3 main French dairy cattle breeds (i.e. Montbéliarde, Normande, and Holstein) as part of the PhénoFinlait program. The 6 major milk protein contents as well as the total protein content (PC) were estimated from mid-infrared spectrometry on 133,592 test-day milk samples from 20,434 cows in first lactation. Lactation means, expressed as a percentage of milk (protein contents) or of protein (protein fractions), were analyzed with an animal mixed model including fixed environmental effects (herd, year × month of calving, and spectrometer) and a random genetic effect...
June 14, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28608135/can-proportional-ventilation-modes-facilitate-exercise-in-critically-ill-patients-a-physiological-cross-over-study-pressure-support-versus-proportional-ventilation-during-lower-limb-exercise-in-ventilated-critically-ill-patients
#19
Evangelia Akoumianaki, Nicolas Dousse, Aissam Lyazidi, Jean-Claude Lefebvre, Severine Graf, Ricardo Luiz Cordioli, Nathalie Rey, Jean-Christophe Marie Richard, Laurent Brochard
BACKGROUND: Early exercise of critically ill patients may have beneficial effects on muscle strength, mass and systemic inflammation. During pressure support ventilation (PSV), a mismatch between demand and assist could increase work of breathing and limit exercise. A better exercise tolerance is possible with a proportional mode of ventilation (Proportional Assist Ventilation, PAV+ and Neurally Adjusted Ventilatory Assist, NAVA). We examined whether, in critically ill patients, PSV and proportional ventilation have different effects on respiratory muscles unloading and work efficiency during exercise...
December 2017: Annals of Intensive Care
https://www.readbyqxmd.com/read/28576127/trials-directly-comparing-alternative-spontaneous-breathing-trial-techniques-a-systematic-review-and-meta-analysis
#20
Karen E A Burns, Ibrahim Soliman, Neill K J Adhikari, Amer Zwein, Jessica T Y Wong, Carolina Gomez-Builes, Jose Augusto Pellegrini, Lu Chen, Nuttapol Rittayamai, Michael Sklar, Laurent J Brochard, Jan O Friedrich
BACKGROUND: The effect of alternative spontaneous breathing trial (SBT) techniques on extubation success and other clinically important outcomes is uncertain. METHODS: We searched MEDLINE, EMBASE, CENTRAL, CINAHL, Evidence-Based Medicine Reviews, Ovid Health Star, proceedings of five conferences (1990-2016), and reference lists for randomized trials comparing SBT techniques in intubated adults or children. Primary outcomes were initial SBT success, extubation success, or reintubation...
June 1, 2017: Critical Care: the Official Journal of the Critical Care Forum
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