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https://www.readbyqxmd.com/read/28828360/transpulmonary-pressure-importance-and-limits
#1
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/28707173/intraoperative-ventilation-of-morbidly-obese-patients-guided-by-transpulmonary-pressure
#2
Lars Eichler, Katarzyna Truskowska, A Dupree, P Busch, Alwin E Goetz, Christian Zöllner
BACKGROUND: Bariatric surgery has proven a successful approach in the treatment of morbid obesity and its concomitant diseases such as diabetes mellitus and arterial hypertension. Aiming for optimal management of this challenging patient cohort, tailored concepts directly guided by individual patient physiology may outperform standardized care. Implying esophageal pressure measurement and electrical impedance tomography-increasingly applied monitoring approaches to individually adjust mechanical ventilation in challenging circumstances like acute respiratory distress syndrome (ARDS) and intraabdominal hypertension-we compared our institutions standard ventilator regimen with an individually adjusted positive end expiratory pressure (PEEP) level aiming for a positive transpulmonary pressure (P L) throughout the respiratory cycle...
July 14, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28584436/titration-of-ideal-positive-end-expiratory-pressure-in-acute-respiratory-distress-syndrome-comparison-between-lower-inflection-point-and-esophageal-pressure-method-using-volumetric-capnography
#3
Nandakishore Baikunje, Inderpaul Singh Sehgal, Sahajal Dhooria, Kuruswamy Thurai Prasad, Ritesh Agarwal
The tenets of mechanical ventilation in acute respiratory distress syndrome (ARDS) include the utilization of low tidal volume and optimal application of positive end-expiratory pressure (PEEP). Optimal PEEP in ARDS is characterized by reduction in alveolar dead space along with improvement in the lung compliance and resultant betterment in oxygenation. There are various methods of setting PEEP in ARDS. Herein, we report a patient of ARDS, wherein we employed measurement of dead space using volumetric capnography to compare two different PEEP strategies, namely, the lower inflection point and transpulmonary pressure monitoring...
May 2017: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/28372575/implementing-a-bedside-assessment-of-respiratory-mechanics-in-patients-with-acute-respiratory-distress-syndrome
#4
Lu Chen, Guang-Qiang Chen, Kevin Shore, Orest Shklar, Concetta Martins, Brian Devenyi, Paul Lindsay, Heather McPhail, Ashley Lanys, Ibrahim Soliman, Mazin Tuma, Michael Kim, Kerri Porretta, Pamela Greco, Hilary Every, Chris Hayes, Andrew Baker, Jan O Friedrich, Laurent Brochard
BACKGROUND: Despite their potential interest for clinical management, measurements of respiratory mechanics in patients with acute respiratory distress syndrome (ARDS) are seldom performed in routine practice. We introduced a systematic assessment of respiratory mechanics in our clinical practice. After the first year of clinical use, we retrospectively assessed whether these measurements had any influence on clinical management and physiological parameters associated with clinical outcomes by comparing their value before and after performing the test...
April 4, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28212205/spontaneous-breathing-during-extracorporeal-membrane-oxygenation-in-acute-respiratory-failure
#5
Stefania Crotti, Nicola Bottino, Giulia Maria Ruggeri, Elena Spinelli, Daniela Tubiolo, Alfredo Lissoni, Alessandro Protti, Luciano Gattinoni
BACKGROUND: We evaluate the clinical feasibility of spontaneous breathing on extracorporeal membrane oxygenation and the interactions between artificial and native lungs in patients bridged to lung transplant or with acute exacerbation of chronic obstructive pulmonary disease (COPD) or acute respiratory distress syndrome. METHODS: The clinical course of a total of 48 patients was analyzed. Twenty-three of 48 patients were enrolled in the prospective study (nine bridged to lung transplant, six COPD, and eight acute respiratory distress syndrome)...
April 2017: Anesthesiology
https://www.readbyqxmd.com/read/28212050/volume-controlled-ventilation-does-not-prevent-injurious-inflation-during-spontaneous-effort
#6
Takeshi Yoshida, Susumu Nakahashi, Maria Aparecida Miyuki Nakamura, Yukiko Koyama, Rollin Roldan, Vinicius Torsani, Roberta R De Santis, Susimeire Gomes, Akinori Uchiyama, Marcelo B P Amato, Brian P Kavanagh, Yuji Fujino
RATIONALE: Spontaneous breathing during mechanical ventilation increases transpulmonary pressure and Vt, and worsens lung injury. Intuitively, controlling Vt and transpulmonary pressure might limit injury caused by added spontaneous effort. OBJECTIVES: To test the hypothesis that, during spontaneous effort in injured lungs, limitation of Vt and transpulmonary pressure by volume-controlled ventilation results in less injurious patterns of inflation. METHODS: Dynamic computed tomography was used to determine patterns of regional inflation in rabbits with injured lungs during volume-controlled or pressure-controlled ventilation...
September 1, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27984319/optimization-of-positive-end-expiratory-pressure-targeting-the-best-arterial-oxygen-transport-in-the-acute-respiratory-distress-syndrome-the-optipep-study
#7
Loïc Chimot, Yannick Fedun, Arnaud Gacouin, Boris Campillo, Sophie Marqué, Antoine Gros, Pierre Delour, Sandrine Bedon-Carte, Yves Le Tulzo
The optimal setting for positive end-expiratory pressure (PEEP) in mechanical ventilation remains controversial in the treatment of acute respiratory distress syndrome (ARDS). The aim of this study was to determine the optimum PEEP level in ARDS, which we defined as the level that allowed the best arterial oxygen delivery (DO2). We conducted a physiologic multicenter prospective study on patients who suffering from ARDS according to standard definition and persistent after 6 hours of ventilation. The PEEP was set to 6 cm H2O at the beginning of the test and then was increased by 2 cm H2O after at least 15 minutes of being stabilized until the plateau pressure achieved 30 cm H2O...
July 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/27694355/esophageal-pressure-measurements-in-patients-with-acute-respiratory-distress-syndrome
#8
Grace Hofmann, Lutana Haan, Jeff Anderson
Esophageal balloons are used in the respiratory monitoring of critical care patients. After the esophageal pressure is measured, the corresponding pleural pressure in the thorax can be projected, enabling lung-thorax compliance to be partitioned into chest-wall compliance and lung compliance. The esophageal balloon allows determination of transpulmonary pressures and a correspondingly individually tailored approach to respiratory care, such as patient-specific titration of positive end-expiratory pressure for patients with extrapulmonary acute respiratory distress syndrome...
October 2016: Critical Care Nurse
https://www.readbyqxmd.com/read/27577052/effect-of-high-frequency-oscillatory-ventilation-on-esophageal-and-transpulmonary-pressures-in-moderate-to-severe-acute-respiratory-distress-syndrome
#9
Christophe Guervilly, Jean-Marie Forel, Sami Hraiech, Antoine Roch, Daniel Talmor, Laurent Papazian
BACKGROUND: High-frequency oscillatory ventilation (HFOV) has not been shown to be beneficial in the management of moderate-to-severe acute respiratory distress syndrome (ARDS). There is uncertainty about the actual pressure applied into the lung during HFOV. We therefore performed a study to compare the transpulmonary pressure (P L) during conventional mechanical ventilation (CMV) and different levels of mean airway pressure (mPaw) during HFOV. METHODS: This is a prospective randomized crossover study in a university teaching hospital...
December 2016: Annals of Intensive Care
https://www.readbyqxmd.com/read/27390467/esophageal-pressure-guided-positive-end-expiratory-pressure-in-acute-respiratory-distress-syndrome-the-jury-is-still-out
#10
Animesh Ray, Ayush Gupta
No abstract text is available yet for this article.
June 2016: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/27318943/mortality-and-pulmonary-mechanics-in-relation-to-respiratory-system-and-transpulmonary-driving-pressures-in-ards
#11
Elias Baedorf Kassis, Stephen H Loring, Daniel Talmor
PURPOSE: The driving pressure of the respiratory system has been shown to strongly correlate with mortality in a recent large retrospective ARDSnet study. Respiratory system driving pressure [plateau pressure-positive end-expiratory pressure (PEEP)] does not account for variable chest wall compliance. Esophageal manometry can be utilized to determine transpulmonary driving pressure. We have examined the relationships between respiratory system and transpulmonary driving pressure, pulmonary mechanics and 28-day mortality...
August 2016: Intensive Care Medicine
https://www.readbyqxmd.com/read/27235320/should-peep-titration-be-based-on-chest-mechanics-in-patients-with-ards
#12
REVIEW
Richard H Kallet
Functional residual capacity (FRC) is essentially the alveolar volume and a determinant of both oxygenation and respiratory system compliance (CRS). ARDS decreases FRC, and sufficient PEEP restores FRC; thus, assessments of PEEP by its impact on oxygenation and CRS are intimately linked. PEEP also can ameliorate or aggravate ventilator-induced lung injury. Therefore, it can be argued that PEEP should be titrated primarily by its impact on CRS The pro position argues that the heterogeneous nature of lung injury and its unique presentation in individual patients results in an uncoupling between oxygenation and CRS Therefore, relying upon oxygenation alone may enhance lung injury and mortality risk, particularly in those with severe ARDS...
June 2016: Respiratory Care
https://www.readbyqxmd.com/read/27076736/acute-respiratory-distress-syndrome-pulmonary-and-extrapulmonary-not-so-similar
#13
Inderpaul Singh Sehgal, Sahajal Dhooria, Digambar Behera, Ritesh Agarwal
Acute respiratory distress syndrome (ARDS) is characterized by acute onset respiratory failure with bilateral pulmonary infiltrates and hypoxemia. Current evidence suggests different respiratory mechanics in pulmonary ARDS (ARDSp) and extrapulmonary ARDS (ARDSexp) with disproportionate decrease in lung compliance in the former and chest wall compliance in the latter. Herein, we report two patients of ARDS, one each with ARDSp and ARDSexp that were managed using real-time esophageal pressure monitoring using the AVEA ventilator to tailor the ventilatory strategy...
March 2016: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/26999639/control-of-respiratory-drive-and-effort-in-extracorporeal-membrane-oxygenation-patients-recovering-from-severe-acute-respiratory-distress-syndrome
#14
RANDOMIZED CONTROLLED TRIAL
Tommaso Mauri, Giacomo Grasselli, Grazia Suriano, Nilde Eronia, Savino Spadaro, Cecilia Turrini, Nicolo' Patroniti, Giacomo Bellani, Antonio Pesenti
BACKGROUND: The amount of extracorporeal carbon dioxide removal may influence respiratory drive in acute respiratory distress syndrome (ARDS) patients undergoing extracorporeal membrane oxygenation (ECMO). The authors evaluated the effects of different levels of extracorporeal carbon dioxide removal in patients recovering from severe ARDS undergoing pressure support ventilation (PSV) and neurally adjusted ventilatory assist (NAVA). METHODS: The authors conducted a prospective, randomized, crossover study on eight spontaneously breathing ARDS patients undergoing venovenous ECMO since 28 ± 20 days...
July 2016: Anesthesiology
https://www.readbyqxmd.com/read/26847436/respiratory-mechanics-and-lung-stress-strain-in-children-with-acute-respiratory-distress-syndrome
#15
Davide Chiumello, Giovanna Chidini, Edoardo Calderini, Andrea Colombo, Francesco Crimella, Matteo Brioni
BACKGROUND: In sedated and paralyzed children with acute respiratory failure, the compliance of respiratory system and functional residual capacity were significantly reduced compared with healthy subjects. However, no major studies in children with ARDS have investigated the role of different levels of PEEP and tidal volume on the partitioned respiratory mechanic (lung and chest wall), stress (transpulmonary pressure) and strain (inflated volume above the functional residual capacity)...
December 2016: Annals of Intensive Care
https://www.readbyqxmd.com/read/26814111/-effect-of-transpulmonary-pressure-directed-mechanical-ventilation-on-respiration-in-severe-acute-pancreatitis-patient-with-intraabdominal-hypertension
#16
Xiaoyan Wu, Ruiqiang Zheng, Hua Lin, Zhiqing Zhuang, Min Zhang, Peixia Yan
OBJECTIVE: To assess the effect of mehanical ventilation (MV) guided by transpulmonary pressure (Ptp) on respiratory mechanics and gas exchange in severe acute pancreatitis patient with intraabdominal hypertension. METHODS: Twelve severe acute pancreatitis patient with intraabdominal hypertension and acute respiratory distress syndrome(ARDS) underwent mechanical ventilation were involved from Jan to Dec 2013. PEEP levels were set to achieve a Ptp of 0 to 10 cm of water at end expiration...
October 20, 2015: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/26627536/the-promises-and-problems-of-transpulmonary-pressure-measurements-in-acute-respiratory-distress-syndrome
#17
REVIEW
Sarina K Sahetya, Roy G Brower
PURPOSE OF REVIEW: The optimal strategy for assessing and preventing ventilator-induced lung injury in the acute respiratory distress syndrome (ARDS) is controversial. Recent investigative efforts have focused on personalizing ventilator settings to individual respiratory mechanics. This review examines the strengths and weaknesses of using transpulmonary pressure measurements to guide ventilator management in ARDS. RECENT FINDINGS: Recent clinical studies suggest that adjusting ventilator settings based on transpulmonary pressure measurements is feasible, may improve oxygenation, and reduce ventilator-induced lung injury...
February 2016: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/26595042/controversies-in-the-management-of-severe-ards-optimal-ventilator-management-and-use-of-rescue-therapies
#18
REVIEW
Brian O'Gara, Eddy Fan, Daniel S Talmor
Groundbreaking research into the pathophysiology of the adult acute respiratory distress syndrome (ARDS) and the prevention of ventilator-induced lung injury has led to dramatic improvements in survival. Investigations over the last two decades have revolved around the development of rescue therapies that can be used for patients with severe ARDS and refractory hypoxemia. To date, the techniques of using high levels of positive end-expiratory pressure (PEEP), prompt institution of neuromuscular blockade, and early prolonged prone positioning have been shown to reduce mortality in patients with severe ARDS...
December 2015: Seminars in Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/26457754/pulse-pressure-variation-adjusted-by-respiratory-changes-in-pleural-pressure-rather-than-by-tidal-volume-reliably-predicts-fluid-responsiveness-in-patients-with-acute-respiratory-distress-syndrome
#19
Yang Liu, Lu-qing Wei, Guo-qiang Li, Xin Yu, Guo-feng Li, Yu-ming Li
OBJECTIVES: 1) To evaluate the ability of pulse pressure variation adjusted by respiratory changes in pleural pressure to predict fluid responsiveness compared with pulse pressure variation alone. 2) To identify factors explaining the poor performance of pulse pressure variation in acute respiratory distress syndrome. DESIGN: Prospective study. SETTING: Forty-bed university hospital general ICU. PATIENTS: Ninety-six mechanically ventilated acute respiratory distress syndrome patients requiring fluid challenge...
February 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/25695069/managing-hypercapnia-in-patients-with-severe-ards-and-low-respiratory-system-compliance-the-role-of-esophageal-pressure-monitoring-a-case-cohort-study
#20
Arie Soroksky, Julia Kheifets, Zehava Girsh Solomonovich, Emad Tayem, Balmor Gingy Ronen, Boris Rozhavsky
PURPOSE: Patients with severe acute respiratory distress syndrome (ARDS) and hypercapnia present a formidable treatment challenge. We examined the use of esophageal balloon for assessment of transpulmonary pressures to guide mechanical ventilation for successful management of severe hypercapnia. MATERIALS AND METHODS: Patients with severe ARDS and hypercapnia were studied. Esophageal balloon was inserted and mechanical ventilation was guided by assessment of transpulmonary pressures...
2015: BioMed Research International
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