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Ewan Goligher

Sarina K Sahetya, Ewan C Goligher, Roy G Brower
Positive end-expiratory pressure (PEEP) has been utilized during mechanical ventilation since the first description of the acute respiratory distress syndrome (ARDS). In the subsequent decades, many different strategies for optimally titrating PEEP have been proposed. Higher PEEP can improve arterial oxygenation, reduce tidal lung stress and strain, and promote more homogenous ventilation by preventing alveolar collapse at end expiration. However, PEEP may also cause circulatory depression and contribute to ventilator-induced lung injury through alveolar overdistention...
February 1, 2017: American Journal of Respiratory and Critical Care Medicine
Ewan C Goligher, E Wesley Ely, Daniel P Sulmasy, Jan Bakker, John Raphael, Angelo E Volandes, Bhavesh M Patel, Kate Payne, Annmarie Hosie, Larry Churchill, Douglas B White, James Downar
OBJECTIVE: Many patients are admitted to the ICU at or near the end of their lives. Consequently, the increasingly common debate regarding physician-assisted suicide and euthanasia holds implications for the practice of critical care medicine. The objective of this article is to explore core ethical issues related to physician-assisted suicide and euthanasia from the perspective of healthcare professionals and ethicists on both sides of the debate. SYNTHESIS: We identified four issues highlighting the key areas of ethical tension central to evaluating physician-assisted suicide and euthanasia in medical practice: 1) the benefit or harm of death itself, 2) the relationship between physician-assisted suicide and euthanasia and withholding or withdrawing life support, 3) the morality of a physician deliberately causing death, and 4) the management of conscientious objection related to physician-assisted suicide and euthanasia in the critical care setting...
February 2017: Critical Care Medicine
Carol Hodgson, Ewan C Goligher, Meredith E Young, Jennifer L Keating, Anne E Holland, Lorena Romero, Scott J Bradley, David Tuxen
BACKGROUND: Recruitment manoeuvres involve transient elevations in airway pressure applied during mechanical ventilation to open ('recruit') collapsed lung units and increase the number of alveoli participating in tidal ventilation. Recruitment manoeuvres are often used to treat patients in intensive care who have acute respiratory distress syndrome (ARDS), but the effect of this treatment on clinical outcomes has not been well established. This systematic review is an update of a Cochrane review originally published in 2009...
November 17, 2016: Cochrane Database of Systematic Reviews
Michael C Sklar, Karen Burns, Nuttapol Rittayamai, Ashley Lanys, Michela Rauseo, Lu Chen, Martin Dres, Guang-Qiang Chen, Ewan C Goligher, Neill Kj Adhikari, Laurent Brochard, Jan O Friedrich
Introduction Spontaneous breathing trials (SBTs) are designed to simulate conditions following extubation and it is essential to understand the physiological impact of different methods. We conducted a systematic review and pooled measures reflecting patient respiratory effort among studies comparing SBT methods in a meta-analysis. Methods We searched Medline, EMBASE, and Web of Science from inception to January 2016 to identify randomized and non-randomized clinical trials reporting physiological measurements of respiratory effort (pressure-time product, PTP) or work of breathing during at least 2 SBT techniques...
October 21, 2016: American Journal of Respiratory and Critical Care Medicine
Ignacio Martin-Loeches, Lieuwe D Bos, Ewan C Goligher
No abstract text is available yet for this article.
April 2017: Intensive Care Medicine
Tommaso Mauri, Takeshi Yoshida, Giacomo Bellani, Ewan C Goligher, Guillaume Carteaux, Nuttapol Rittayamai, Francesco Mojoli, Davide Chiumello, Lise Piquilloud, Salvatore Grasso, Amal Jubran, Franco Laghi, Sheldon Magder, Antonio Pesenti, Stephen Loring, Luciano Gattinoni, Daniel Talmor, Lluis Blanch, Marcelo Amato, Lu Chen, Laurent Brochard, Jordi Mancebo
PURPOSE: Esophageal pressure (Pes) is a minimally invasive advanced respiratory monitoring method with the potential to guide management of ventilation support and enhance specific diagnoses in acute respiratory failure patients. To date, the use of Pes in the clinical setting is limited, and it is often seen as a research tool only. METHODS: This is a review of the relevant technical, physiological and clinical details that support the clinical utility of Pes. RESULTS: After appropriately positioning of the esophageal balloon, Pes monitoring allows titration of controlled and assisted mechanical ventilation to achieve personalized protective settings and the desired level of patient effort from the acute phase through to weaning...
September 2016: Intensive Care Medicine
Lu Chen, Michael Sklar, Martin Dres, Ewan C Goligher
No abstract text is available yet for this article.
June 1, 2016: American Journal of Respiratory and Critical Care Medicine
Giuseppe Francesco Sferrazza Papa, Giulia Michela Pellegrino, Fabiano Di Marco, Gianluca Imeri, Laurent Brochard, Ewan Goligher, Stefano Centanni
Ultrasonography is the only non-invasive, non-ionizing imaging technique widely available to directly assess diaphragmatic function. Two different sonographic approaches permit the assessment of muscle thickening in the zone of apposition and excursion of the dome of the diaphragm. Thanks to the new hand-held ultrasound instruments, the morphology and function of the diaphragm can be assessed in different settings, such as outpatient clinic, pulmonary function test laboratory, hospital department and intensive care unit, and under different conditions...
2016: Respiration; International Review of Thoracic Diseases
Ewan C Goligher, Niall D Ferguson, Laurent J Brochard
Mechanical ventilation supports gas exchange and alleviates the work of breathing when the respiratory muscles are overwhelmed by an acute pulmonary or systemic insult. Although mechanical ventilation is not generally considered a treatment for acute respiratory failure per se, ventilator management warrants close attention because inappropriate ventilation can result in injury to the lungs or respiratory muscles and worsen morbidity and mortality. Key clinical challenges include averting intubation in patients with respiratory failure with non-invasive techniques for respiratory support; delivering lung-protective ventilation to prevent ventilator-induced lung injury; maintaining adequate gas exchange in severely hypoxaemic patients; avoiding the development of ventilator-induced diaphragm dysfunction; and diagnosing and treating the many pathophysiological mechanisms that impair liberation from mechanical ventilation...
April 30, 2016: Lancet
Jeremy R Beitler, Ewan C Goligher, Matthieu Schmidt, Peter M Spieth, Alberto Zanella, Ignacio Martin-Loeches, Carolyn S Calfee, Alexandre B Cavalcanti
In the last 20 years, survival among patients with acute respiratory distress syndrome (ARDS) has increased substantially with advances in lung-protective ventilation and resuscitation. Building on this success, personalizing mechanical ventilation to patient-specific physiology for enhanced lung protection will be a top research priority for the years ahead. However, the ARDS research agenda must be broader in scope. Further understanding of the heterogeneous biology, from molecular to mechanical, underlying early ARDS pathogenesis is essential to inform therapeutic discovery and tailor treatment and prevention strategies to the individual patient...
May 2016: Intensive Care Medicine
Ewan C Goligher, Eddy Fan, Margaret S Herridge, Alistair Murray, Stefannie Vorona, Debbie Brace, Nuttapol Rittayamai, Ashley Lanys, George Tomlinson, Jeffrey M Singh, Steffen-Sebastian Bolz, Gordon D Rubenfeld, Brian P Kavanagh, Laurent J Brochard, Niall D Ferguson
RATIONALE: Diaphragm atrophy and dysfunction have been reported in humans during mechanical ventilation, but the prevalence, causes, and functional impact of changes in diaphragm thickness during routine mechanical ventilation for critically ill patients are unknown. OBJECTIVES: To describe the evolution of diaphragm thickness over time during mechanical ventilation, its impact on diaphragm function, and the influence of inspiratory effort on this phenomenon. METHODS: In three academic intensive care units, 107 patients were enrolled shortly after initiating ventilation along with 10 nonventilated intensive care unit patients (control subjects)...
November 1, 2015: American Journal of Respiratory and Critical Care Medicine
Ewan C Goligher, Ghislaine Douflé, Eddy Fan
Novel approaches to the management of acute respiratory distress syndrome include strategies to enhance alveolar liquid clearance, promote epithelial cell growth and recovery after acute lung injury, and individualize ventilator care on the basis of physiological responses. The use of extracorporeal membrane oxygenation (ECMO) is growing rapidly, and centers providing ECMO must strive to meet stringent quality standards such as those set out by the ECMONet working group. Prognostic tools such as the RESP score can assist clinicians in predicting outcomes for patients with severe acute respiratory failure but do not predict whether ECMO will enhance survival...
June 15, 2015: American Journal of Respiratory and Critical Care Medicine
Ewan C Goligher, Franco Laghi, Michael E Detsky, Paulina Farias, Alistair Murray, Deborah Brace, Laurent J Brochard, Steffen-Sebastien Bolz, Gordon D Rubenfeld, Brian P Kavanagh, Niall D Ferguson
No abstract text is available yet for this article.
April 2015: Intensive Care Medicine
Ewan C Goligher, Franco Laghi, Michael E Detsky, Paulina Farias, Alistair Murray, Deborah Brace, Laurent J Brochard, Steffen-Sebastien Bolz, Steffen Sebastien-Bolz, Gordon D Rubenfeld, Brian P Kavanagh, Niall D Ferguson
PURPOSE: Ultrasound measurements of diaphragm thickness (T di) and thickening (TFdi) may be useful to monitor diaphragm activity and detect diaphragm atrophy in mechanically ventilated patients. We aimed to establish the reproducibility of measurements in ventilated patients and determine whether passive inflation by the ventilator might cause thickening apart from inspiratory effort. METHODS: Five observers measured T di and TFdi in 96 mechanically ventilated patients...
April 2015: Intensive Care Medicine
Ewan C Goligher, Brian P Kavanagh, Gordon D Rubenfeld, Niall D Ferguson
Most randomized trials in critical care report no mortality benefit; this may reflect competing pathogenic mechanisms, patient heterogeneity, or true ineffectiveness of interventions. We hypothesize that in acute respiratory distress syndrome (ARDS), randomizing only those patients who show a favorable physiological response to an intervention would help ensure that only those likely to benefit would be entered into the study. If true, this would decrease study "noise" and reduce required sample size, thereby increasing the chances of finding true-positive outcomes...
December 15, 2015: American Journal of Respiratory and Critical Care Medicine
Laurent Brochard, Lu Chen, Ewan Goligher
No abstract text is available yet for this article.
August 2014: Indian Journal of Critical Care Medicine
Ewan C Goligher, Brian P Kavanagh, Gordon D Rubenfeld, Neill K J Adhikari, Ruxandra Pinto, Eddy Fan, Laurent J Brochard, John T Granton, Alain Mercat, Jean-Christophe Marie Richard, Jean-Marie Chretien, Graham L Jones, Deborah J Cook, Thomas E Stewart, Arthur S Slutsky, Maureen O Meade, Niall D Ferguson
RATIONALE: Previous trials of higher positive end-expiratory pressure (PEEP) for acute respiratory distress syndrome (ARDS) failed to demonstrate mortality benefit, possibly because of differences in lung recruitability among patients with ARDS. OBJECTIVES: To determine whether the physiological response to increased PEEP is associated with mortality. METHODS: In a secondary analysis of the Lung Open Ventilation Study (LOVS, n = 983), we examined the relationship between the initial response to changes in PEEP after randomization and mortality...
July 1, 2014: American Journal of Respiratory and Critical Care Medicine
Ewan C Goligher, Jesús Villar, Arthur S Slutsky
No abstract text is available yet for this article.
February 2014: Critical Care Medicine
Ewan C Goligher, Eddy Fan, Arthur S Slutsky
Acute respiratory failure is a dominant feature of critical illness. In this review, we discuss 17 studies published last year in Critical Care. The discussion focuses on articles on several topics: respiratory monitoring, acute respiratory distress syndrome, noninvasive ventilation, airway management, secretion management and weaning.
2013: Critical Care: the Official Journal of the Critical Care Forum
Ewan C Goligher, Niall D Ferguson
High-frequency oscillatory ventilation (HFOV) seems ideal for lung protection in acute respiratory distress syndrome, but randomized trials have not shown a mortality reduction. The initial oxygenation response to HFOV appears to be associated with survival. Here, we discuss the mechanisms of oxygenation response to increases in airway pressure and the interpretation of the oxygenation response observed in the present study.
2013: Critical Care: the Official Journal of the Critical Care Forum
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