Results 11 to 20 of about 61,398 (311)

Generation of ventilation/perfusion ratio map in surgical patients by dual-energy CT after xenon inhalation and intravenous contrast media [PDF]

Journal of Cardiothoracic Surgery, 2018
Background While many studies have evaluated the change in lung volume before and after lung resection and correlated this with pulmonary function test results, there is very little evidence on the changes in ventilation perfusion ratio (V/Q) before ...
Kohei Aoki, Yotaro Izumi, Wataru Watanabe, Yuji Shimizu, Hisato Osada, Norinari Honda, Toshihide Itoh, Mitsuo Nakayama   +7 more
doaj   +2 more sources

The impact of metabolic syndrome on regional ventilation and perfusion in ARDS: an observational cohort study using electrical impedance tomography [PDF]

Intensive Care Medicine Experimental
Background Acute Respiratory Distress Syndrome (ARDS) is characterized by severe hypoxemia from heterogeneous impairments in regional ventilation and perfusion.
Timothy G. Gaulton, Marcus Victor, Glasiele Alcala, Roberta Ribeiro De Santis Santiago, Florencia Rodriguez Sendic, Yi Xin, Stefano Spina, Cristina Mietto, Lorenzo Berra, Maurizio Cereda   +9 more
doaj   +2 more sources

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

In silico modeling of oxygen-enhanced MRI of specific ventilation. [PDF]

, 2018
Specific ventilation imaging (SVI) proposes that using oxygen-enhanced 1H MRI to capture signal change as subjects alternatively breathe room air and 100% O2 provides an estimate of specific ventilation distribution in the lung.
Burrowes, Kelly S, Clark, Alys R, Geier, Eric T, Kang, Wendy, Prisk, G Kim, Sá, Rui C, Tawhai, Merryn H   +6 more
core   +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

Modeling of breath methane concentration profiles during exercise on an ergometer [PDF]

, 2016
We develop a simple three compartment model based on mass balance equations which quantitatively describes the dynamics of breath methane concentration profiles during exercise on an ergometer.
Jandacka, Martin, King, Julian, Mochalski, Pawel, Mohacsi, Arpad, Ruzsanyi, Vera, Szabo, Anna, Szabo, Gabor, Teschl, Gerald, Teschl, Susanne, Unterkofler, Karl   +9 more
core   +2 more sources

TNF receptor–related factor 3 inactivation promotes the development of intrahepatic cholangiocarcinoma through NF‐κB‐inducing kinase–mediated hepatocyte transdifferentiation

Hepatology, EarlyView., 2022
Abstract Background and Aims Intrahepatic cholangiocarcinoma (ICC) is a deadly but poorly understood disease, and its treatment options are very limited. The aim of this study was to identify the molecular drivers of ICC and search for therapeutic targets.
Yuto Shiode, Takahiro Kodama, Satoshi Shigeno, Kazuhiro Murai, Satoshi Tanaka, Justin Y. Newberg, Jumpei Kondo, Shogo Kobayashi, Ryoko Yamada, Hayato Hikita, Ryotaro Sakamori, Hiroshi Suemizu, Tomohide Tatsumi, Hidetoshi Eguchi, Nancy A. Jenkins, Neal G. Copeland, Tetsuo Takehara   +16 more
wiley   +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

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