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Plateau pressure

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https://www.readbyqxmd.com/read/28736562/brain-natriuretic-peptide-is-a-marker-of-fluid-overload-in-incident-hemodialysis-patients
#1
Charles Chazot, Margaux Rozes, Cyril Vo-Van, Patrik Deleaval, Jean-Marc Hurot, Christie Lorriaux, Brice Mayor, Eric Zaoui, Guillaume Jean
BACKGROUND/AIMS: Brain natriuretic peptide (BNP) is secreted by cardiomyocytes under stretch condition. High blood levels are associated with decreased patient survival in heart failure patients and in hemodialysis (HD) patients. We report the monthly BNP change in the first months of HD therapy in incident patients and its relationship with fluid removal and cardiac history (CH). METHODS: All patients starting HD therapy in our unit from May 2008 to December 2012 were retrospectively analyzed...
June 2017: Cardiorenal Medicine
https://www.readbyqxmd.com/read/28733592/machine-learning-model-analysis-of-breeding-habitats-for-the-black-necked-crane-in-central-asian-uplands-under-anthropogenic-pressures
#2
Xuesong Han, Yumin Guo, Chunrong Mi, Falk Huettmann, Lijia Wen
The black-necked crane (Grus nigricollis) is the only alpine crane species and is endemic to the Tibetan Plateau. The breeding habitats of this species are poorly understood, which greatly hampers practical research and conservation work. Using machine learning methods and the best-available data from our 7,000-kilometer mega-transect survey and open access data, we built the first species distribution model (SDM) to analyze the black-necked crane's breeding habitats. Our model showed that current conservation gaps account for 26...
July 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28720096/clinical-and-radiographic-predictors-of-acute-compartment-syndrome-in-the-treatment-of-tibial-plateau-fractures-a-retrospective-cohort-study
#3
Axel Gamulin, Anne Lübbeke, Patrick Belinga, Pierre Hoffmeyer, Thomas V Perneger, Matthieu Zingg, Gregory Cunningham
BACKGROUND: The aim of the study was to evaluate the relation between demographic, injury-related, clinical and radiological factors of patients with tibial plateau fractures and the development of acute compartment syndrome. METHODS: All consecutive adult patients with intra-articular tibial plateau fractures admitted in our urban academic medical centre between January 2005 and December 2009 were included in this retrospective cohort study. The main outcome measurement was the development of acute compartment syndrome...
July 18, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28716645/update-in-management-of-severe-hypoxemic-respiratory-failure
#4
REVIEW
Dharani Kumari Narendra, Dean R Hess, Curtis N Sessler, Habtamu M Belete, Kalpalatha K Guntupalli, Felix Khusid, Charles Mark Carpati, Mark Elton Astiz, Suhail Raoof
Mortality related to severe-moderate and severe ARDS remains high. We searched the literature to update this topic. We defined severe hypoxemic respiratory failure as PaO2/FIO2 < 150 mm Hg (i.e., severe-moderate and severe ARDS). For these patients, we support setting the ventilator to a tidal volume of 4-8 mL/kg predicted body weight (PBW) with plateau pressure ≤30 cm H2O, and initial PEEP of 10 - 12 cm H2O. To promote alveolar recruitment, we propose increasing PEEP in increments of 2 - 3 cm, provided plateau pressure remains ≤30 cm H2O and driving pressure does not increase...
July 14, 2017: Chest
https://www.readbyqxmd.com/read/28710005/cationic-microbubbles-and-antibiotic-free-miniplasmid-for-sustained-ultrasound-mediated-transgene-expression-in-liver
#5
Simona Manta, Gilles Renault, Anthony Delalande, Olivier Couture, Isabelle Lagoutte, Johanne Seguin, Franck Lager, Pascal Houzé, Patrick Midoux, Michel Bessodes, Daniel Scherman, Michel-Francis Bureau, Corinne Marie, Chantal Pichon, Nathalie Mignet
Despite the increasing number of clinical trials in gene therapy, no ideal methods still allow non-viral gene transfer in deep tissues such as the liver. We were interested in ultrasound (US)-mediated gene delivery to provide long term liver expression. For this purpose, new positively charged microbubbles were designed and complexed with pFAR4, a highly efficient small length miniplasmid DNA devoid of antibiotic resistance sequence. Sonoporation parameters, such as insonation time, acoustic pressure and duration of plasmid injection were controlled under ultrasound imaging guidance...
July 11, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28673814/comparison-between-pressure-regulated-volume-controlled-and-volume-controlled-ventilation-on-oxygenation-parameters-airway-pressures-and-immune-modulation-during-thoracic-surgery
#6
Khaled Mahmoud, Amany Ammar, Zeinab Kasemy
OBJECTIVES: To compare 2 different ventilatory strategies: pressure-regulated volume-controlled (PRVC) versus volume-controlled ventilation during thoracotomy. DESIGN: Prospective randomized study. SETTING: University hospital. PARTICIPANTS: The study comprised 70 adult patients undergoing thoracic surgery. INTERVENTIONS: Evaluation of oxygenation parameters, airway pressures, and immune modulation...
March 22, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28671879/feasibility-of-protective-ventilation-during-elective-supratentorial-neurosurgery-a-randomized-crossover-clinical-trial
#7
Francesco Ruggieri, Luigi Beretta, Laura Corno, Valentina Testa, Enrico A Martino, Marco Gemma
BACKGROUND: Traditional ventilation approaches, providing high tidal volumes (Vt), produce excessive alveolar distention and lung injury. Protective ventilation, employing lower Vt and positive end-expiratory pressure (PEEP), is an attractive alternative also for neuroanesthesia, when prolonged mechanical ventilation is needed. Nevertheless, protective ventilation during intracranial surgery may exert dangerous effects on intracranial pressure (ICP). We tested the feasibility of a protective ventilation strategy in neurosurgery...
June 30, 2017: Journal of Neurosurgical Anesthesiology
https://www.readbyqxmd.com/read/28664851/clinical-trials-in-acute-respiratory-distress-syndrome-challenges-and-opportunities
#8
REVIEW
Michael A Matthay, Daniel F McAuley, Lorraine B Ware
This year is the 50th anniversary of the first description of acute respiratory distress syndrome (ARDS). Since then, much has been learned about the pathogenesis of lung injury in ARDS, with an emphasis on the mechanisms of injury to the lung endothelium and the alveolar epithelium. In terms of treatment, major progress has been made in reducing mortality from ARDS with lung-protective ventilation, using a tidal volume of 6 mL per kg of predicted bodyweight and a plateau airway pressure of less than 30 cm H2O...
June 2017: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/28651794/airflow-shape-is-associated-with-the-pharyngeal-structure-causing-osa
#9
Pedro R Genta, Scott A Sands, James P Butler, Stephen H Loring, Eliot S Katz, B Gail Demko, Eric J Kezirian, David P White, Andrew Wellman
BACKGROUND: OSA results from the collapse of different pharyngeal structures (soft palate, tongue, lateral walls, and epiglottis). The structure involved in collapse has been shown to impact non-CPAP OSA treatment. Different inspiratory airflow shapes are also observed among patients with OSA. We hypothesized that inspiratory flow shape reflects the underlying pharyngeal structure involved in airway collapse. METHODS: Subjects with OSA were studied with a pediatric endoscope and simultaneous nasal flow and pharyngeal pressure recordings during natural sleep...
June 23, 2017: Chest
https://www.readbyqxmd.com/read/28642867/evaluation-of-the-effect-of-a-single-intra-articular-injection-of-allogeneic-neonatal-mesenchymal-stromal-cells-compared-to-oral-non-steroidal-anti-inflammatory-treatment-on-the-postoperative-musculoskeletal-status-and-gait-of-dogs-over-a-6-month-period-after
#10
Mathieu Taroni, Quentin Cabon, Marine Fèbre, Thibaut Cachon, Nathalie Saulnier, Claude Carozzo, Stéphane Maddens, Fabrice Labadie, Clément Robert, Eric Viguier
OBJECTIVE: Compare the clinical and pressure walkway gait evolution of dogs after a tibial plateau leveling osteotomy (TPLO) for a cranial cruciate ligament rupture (CrCLR) and treatment with either a 1-month course of non-steroidal anti-inflammatory drugs (NSAIDs) or a single postoperative intra-articular (IA) injection of allogeneic neonatal mesenchymal stromal cells (MSCs). STUDY DESIGN: Prospective, double-blinded, randomized, controlled, monocentric clinical study...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28640104/the-easytube-during-general-anesthesia-for-minor-surgery-a-randomized-controlled-trial
#11
RANDOMIZED CONTROLLED TRIAL
Oliver Robak, Sonia Vaida, Luis Gaitini, Andreas Thierbach, Ricardo Urtubia, Peter Krafft, Michael Frass
BACKGROUND: The EasyTube (EzT) is a supraglottic airway device that is used for emergency airway situations. Ventilation during general anesthesia should also be feasible, but literature on the EzT is scarce. We evaluated the EzT in comparison with the endotracheal tube (ETT) in its use during general anesthesia in a comparative study. METHODS: A total of 400 patients with American Society of Anesthesiologists (ASA) physical status I to II scheduled for minor surgery in 4 centers were randomized for ventilation via the ETT or EzT...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28617154/two-kidney-one-clip-is-a-pertinent-approach-to-integrate-arterial-hypertension-in-animal-models-of-stroke-serial-magnetic-resonance-imaging-studies-of-brain-lesions-before-and-during-cerebral-ischemia
#12
Benjamin Ménard, Laurent Chazalviel, Simon Roussel, Myriam Bernaudin, Omar Touzani
Although chronic arterial hypertension (CAH) represents the major comorbid factor in stroke, it is rarely integrated in preclinical studies of stroke. The majority of those investigations employ spontaneously hypertensive rats (SHR) which display a susceptibility to ischemic damage independent of hypertension. Here, we used a renovascular model of hypertension (RH) to examine, with magnetic resonance imaging (MRI), brain alterations during the development of hypertension and after brain ischemia. We also examined whether MRI-derived parameters predict the extent of ischemia-induced brain damage...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28616282/pressure-controlled-versus-volume-controlled-ventilation-during-one-lung-ventilation-for-video-assisted-thoracoscopic-lobectomy
#13
Yi-Qi Zhu, Fang Fang, Xiao-Min Ling, Jian Huang, Jing Cang
BACKGROUND: It is controversial as to which ventilation mode is better during one-lung ventilation (OLV). This study was designed to figure out whether there was any difference between volume controlled ventilation (VCV) and pressure controlled ventilation (PCV) on oxygenation and postoperative complications under the condition of protective ventilation (PV). METHODS: Sixty-five patients undergoing video-assisted thoracoscopic lobectomy were randomized into two groups...
May 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28612466/reflux-cough-syndrome-assessment-of-temporal-association-between-reflux-episodes-and-cough-bursts
#14
T V K Herregods, A Pauwels, J Tack, A J P M Smout, A J Bredenoord
BACKGROUND: Gastro-esophageal reflux can be the cause of chronic cough. In the assessment of the temporal association between reflux and cough, previous studies have used a two-minute time window, based on studies in patients with heartburn. However, it remains unclear whether the optimal time window duration for the evaluation of reflux-induced cough is two minutes as well. Therefore, we aimed to determine whether a two-minute time window is optimal to diagnose reflux-induced cough. METHODS: In this multicenter study, 137 patients with chronic cough were evaluated using 24-h pH-impedance-pressure monitoring...
June 14, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28593896/synergistic-effect-of-hyperoxia-and-biotrauma-on-ventilator-induced-lung-injury
#15
Mirjana Shosholcheva, Nikola Јankulovski, Andrijan Kartalov, Biljana Kuzmanovska, Daniela Miladinova
Patients undergoing mechanical ventilation in intensive care units (ICUs) may develop ventilator-induced lung injury (VILI). Beside the high tidal volume (Vt) and plateau pressure (Pplat), hyperoxia is supposed to precipitate lung injury. Oxygen toxicity is presumed to occur at levels of fraction of inspired oxygen (FiO2) exceeding 0.40. The exposure time to hyperoxia is certainly very important and patients who spend extended time on mechanical ventilation (MV) are probably more exposed to severe hyperoxic acute lung injury (HALI)...
March 1, 2017: Prilozi (Makedonska Akademija Na Naukite i Umetnostite. Oddelenie za Medicinski Nauki)
https://www.readbyqxmd.com/read/28588118/clinical-management-strategies-for-airway-pressure-release-ventilation-a-survey-of-clinical-practice
#16
Andrew G Miller, Michael A Gentile, John D Davies, Neil R MacIntyre
BACKGROUND: Airway pressure release ventilation (APRV) is a commonly used mode of ventilation designed to increase mean airway pressure and thus oxygenation. Different strategies for clinical management have been described in the literature but are largely based on physiologic concepts, animal data, and small clinical trials. The purpose of this study was to determine how APRV is currently managed by surveying practicing respiratory therapists with experience using APRV. METHODS: A 15-item survey was developed by the authors and posted on the AARConnect online media platform in January 2016 after being declared exempt by our institution's institutional review board...
June 6, 2017: Respiratory Care
https://www.readbyqxmd.com/read/28587834/spasmogenic-effects-of-the-proteasome-inhibitor-carfilzomib-on-coronary-resistance-vascular-tone-and-reactivity
#17
Carol Chen-Scarabelli, Giovanni Corsetti, Evasio Pasini, Francesco S Dioguardi, Gagan Sahni, Jagat Narula, Mara Gavazzoni, Hemang Patel, Louis Saravolatz, Richard Knight, Riccardo Raddino, Tiziano M Scarabelli
BACKGROUND: Carfilzomib (CFZ) is a new proteasome inhibitor used for the treatment of multiple myeloma. Besides heart failure, angina and myocardial ischemia occurred following administration of CFZ, which is not contraindicated in patients with recent myocardial infarction/unstable angina excluded from the safety trials. AIM OF STUDY: To test the effects of CFZ (10(-9) to 10(-7)mol/L) on vascular tone and reactivity in the isolated rabbit heart and aorta. METHODS AND RESULTS: CFZ administered by bolus injection to the isolated heart increased coronary perfusion pressure (CPP) at all tested concentrations and mildly raised left ventricular pressure and heart rate, only at the highest concentration...
May 23, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28574328/cerebrospinal-fluid-outflow-resistance-as-a-diagnostic-marker-of-spontaneous-cerebrospinal-fluid-leakage
#18
Jürgen Beck, Christian Fung, Christian T Ulrich, Michael Fiechter, Jens Fichtner, Heinrich P Mattle, Marie-Luise Mono, Niklaus Meier, Pasquale Mordasini, Werner J Z'Graggen, Jan Gralla, Andreas Raabe
OBJECTIVE Spinal CSF leakage causes spontaneous intracranial hypotension (SIH). The aim of this study was to characterize CSF dynamics via lumbar infusion testing in patients with and without proven spinal CSF leakage in order to explore possible discriminators for the presence of an open CSF leak. METHODS This analysis included all patients with suspected SIH who were treated at the authors' institution between January 2012 and February 2015. The gold standard for "proven" CSF leakage is considered to be extrathecal contrast accumulation after intrathecal contrast injection...
June 2, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28558057/new-thermoluminescence-age-estimates-for-the-nyos-maar-eruption-cameroon-volcanic-line
#19
Christoph Schmidt, Jean Pierre Tchouankoue, Peguy Noel Nkouamen Nemzoue, Félicité Ayaba, Siggy Signe Nformidah-Ndah, Emmanuel Nformi Chifu
Nyos maar is located in the Cameroon Volcanic Line and generates a multitude of primary and secondary hazards to the local population. For risk assessment and hazard mitigation, the age of the Nyos maar eruption provides some vital information. Since previous dating efforts using a range of techniques resulted in vastly varying eruption ages, we applied thermoluminescence (TL) methods to obtain independent and direct chronological constraints for the time of maar formation. Target minerals were granitic quartz clasts contained in pyroclastic surge deposits...
2017: PloS One
https://www.readbyqxmd.com/read/28554924/optimal-plateau-pressure-for-patients-with-acute-respiratory-distress-syndrome-a-protocol-for-a-systematic-review-and-meta-analysis-with-meta-regression
#20
Hideto Yasuda, Tetsuro Nishimura, Tetsuro Kamo, Masamitsu Sanui, Eishu Nango, Takayuki Abe, Toru Takebayashi, Alan Kawarai Lefor, Satoru Hashimoto
INTRODUCTION: Lower tidal volume ventilation in patients with acute respiratory distress syndrome (ARDS) is a strategy to reduce the plateau pressure and driving pressure to limit ventilator-induced lung injury (VILI). Several randomised controlled trials (RCTs) and meta-analyses showed that limiting both the plateau pressure and the tidal volume decreased mortality, but the optimal plateau pressure to demonstrate a benefit is uncertain. The aim of this systematic review is to investigate the optimal upper limit of plateau pressure in patients with ARDS to prevent VILI and improve clinical outcomes using meta-analysis with and without meta-regression...
May 29, 2017: BMJ Open
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