Results 11 to 20 of about 37,236 (267)

Influence of Positive End-Expiratory Pressure Titration on the Effects of Pronation in Acute Respiratory Distress Syndrome: A Comprehensive Experimental Study

Frontiers in Physiology, 2020
Prone position can reduce mortality in acute respiratory distress syndrome (ARDS), but several studies found variable effects on oxygenation and lung mechanics.
Gaetano Scaramuzzo, Gaetano Scaramuzzo, Lorenzo Ball, Lorenzo Ball, Fabio Pino, Fabio Pino, Lucia Ricci, Lucia Ricci, Anders Larsson, Claude Guérin, Claude Guérin, Claude Guérin, Paolo Pelosi, Paolo Pelosi, Gaetano Perchiazzi, Gaetano Perchiazzi   +15 more
doaj   +1 more source

Anatomy and physiology of respiratory system relevant to anaesthesia

Indian Journal of Anaesthesia, 2015
Clinical application of anatomical and physiological knowledge of respiratory system improves patient's safety during anaesthesia. It also optimises patient's ventilatory condition and airway patency.
Apeksh Patwa, Amit Shah
doaj   +1 more source

Dead space ventilation-related indices: bedside tools to evaluate the ventilation and perfusion relationship in patients with acute respiratory distress syndrome

Critical Care, 2023
Cumulative evidence has demonstrated that the ventilatory ratio closely correlates with mortality in acute respiratory distress syndrome (ARDS), and a primary feature in coronavirus disease 2019 (COVID-19)-ARDS is increased dead space that has been ...
Mingjia Zheng
doaj   +1 more source

Ventilation–perfusion heterogeneity measured by the multiple inert gas elimination technique is minimally affected by intermittent breathing of 100% O2

Physiological Reports, 2020
Proton magnetic resonance (MR) imaging to quantify regional ventilation–perfusion ( V˙A/Q˙) ratios combines specific ventilation imaging (SVI) and separate proton density and perfusion measures into a composite map.
Ann R. Elliott, Abhilash S. Kizhakke Puliyakote, Vincent Tedjasaputra, Beni Pazár, Harrieth Wagner, Rui C. Sá, Jeremy E. Orr, G. Kim Prisk, Peter D. Wagner, Susan R. Hopkins   +9 more
doaj   +1 more source

Unstable SpO2 in preterm infants: The key role of reduced ventilation to perfusion ratio

Frontiers in Physiology, 2023
Introduction: Instability of peripheral oxyhemoglobin saturation (SpO2) in preterm infants is correlated with late disability and is poorly understood.
Benjamin Stoecklin, Benjamin Stoecklin, Y. Jane Choi, Y. Jane Choi, Theodore Dassios, J. Gareth Jones, Geoffrey G. Lockwood, J. Jane Pillow, J. Jane Pillow   +8 more
doaj   +1 more source

Imaging lung function in mice using SPECT/CT and per-voxel analysis. [PDF]

PLoS ONE, 2012
Chronic lung disease is a major worldwide health concern but better tools are required to understand the underlying pathologies. Ventilation/perfusion (V/Q) single photon emission computed tomography (SPECT) with per-voxel analysis allows for non ...
Brian N Jobse, Rod G Rhem, Cory A J R McCurry, Iris Q Wang, N Renée Labiris   +4 more
doaj   +1 more source

The hypoxic pulmonary vasoconstriction: From physiology to clinical application in thoracic surgery

Saudi Journal of Anaesthesia, 2021
More than 70 years after its original report, the hypoxic pulmonary vasoconstriction (HPV) response continues to spark scientific interest on its mechanisms and clinical implications, particularly for anesthesiologists involved in thoracic surgery ...
Marc Licker, Andres Hagerman, Alexandre Jeleff, Raoul Schorer, Christoph Ellenberger   +4 more
doaj   +1 more source

Sildenafil for treating patients with COVID-19 and perfusion mismatch: a pilot randomized trial

Critical Care, 2022
Background SARS-CoV-2 seems to affect the regulation of pulmonary perfusion. Hypoperfusion in areas of well-aerated lung parenchyma results in a ventilation–perfusion mismatch that can be characterized using subtraction computed tomography angiography ...
Mario G. Santamarina, Ignacio Beddings, Felipe Martinez Lomakin, Dominique Boisier Riscal, Mónica Gutiérrez Claveria, Jaime Vidal Marambio, Nicole Retamal Báez, Cristian Pavez Novoa, César Reyes Allende, Paulina Ferreira Perey, Miguel Gutiérrez Torres, Camila Villalobos Mazza, Constanza Vergara Sagredo, Sebastian Ahumada Bermejo, Eduardo Labarca Mellado, Elizabeth Barthel Munchmeyer, Solange Marchant Ramos, Mariano Volpacchio, Jorge Vega   +18 more
doaj   +1 more source

Dual energy window imaging for optimisation of P/V ratios in VP SPECT

EJNMMI Physics, 2021
Purpose Ventilation–perfusion single-photon emission computed tomography (VP SPECT) plays an important role in pulmonary embolism diagnosis. Rapid results may be obtained using same-day ventilation followed by perfusion imaging, but generally requires ...
A. G. G. Doruyter, J. L. Holness
doaj   +1 more source

Platypnea-Orthodeoxia and Patent Foramen Ovale in a Patient in the Setting of COVID-19 [PDF]

Texas Heart Institute Journal
Platypnea-orthodeoxia syndrome is a rare condition characterized by positional dyspnea and hypoxemia, with symptoms presenting in the upright position and improving when recumbent.
Laura Sarmiento, MD, Riyad Kherallah, MD, Guilherme Vianna Silva, MD   +2 more
doaj   +1 more source