Results 1 to 10 of about 37,236 (267)

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

Changes in dead space components during pressure-controlled inverse ratio ventilation: A secondary analysis of a randomized trial.

PLoS ONE, 2021
BackgroundWe previously reported that there were no differences between the lung-protective actions of pressure-controlled inverse ratio ventilation and volume control ventilation based on the changes in serum cytokine levels.
Go Hirabayashi, Yuuki Yokose, Kohei Nagata, Hiroyuki Oshika, Minami Saito, Yuki Akihisa, Koichi Maruyama, Tomio Andoh   +7 more
doaj   +1 more source

Prone position and APRV for severe hypoxemia in COVID-19 patients: The role of perfusion

Journal of Mechanical Ventilation, 2020
There have been confusion and contradiction on how to best manage patients with acute respiratory failure secondary to Corona virus disease-2019 (COVID-19). Recent report suggested two different phenotypes of patho-physiology (type L and type H).
Ehab G. Daoud, Natsumi T. Hamahata , Ryota Sato   +2 more
doaj   +1 more source

Unmatched ventilation and perfusion measured by electrical impedance tomography predicts the outcome of ARDS

Critical Care, 2021
Background In acute respiratory distress syndrome (ARDS), non-ventilated perfused regions coexist with non-perfused ventilated regions within lungs. The number of unmatched regions might reflect ARDS severity and affect the risk of ventilation-induced ...
Elena Spinelli, Michael Kircher, Birgit Stender, Irene Ottaviani, Maria C. Basile, Ines Marongiu, Giulia Colussi, Giacomo Grasselli, Antonio Pesenti, Tommaso Mauri   +9 more
doaj   +1 more source

EVALUATION OF VENTILATION-PERFUSION RATIO IN CHRONIC OBSTRUCTIVE PULMONARY DISEASE

Паёми Сино, 2021
Objective: To study ventilation-perfusion ratio (VPR) in patients with chronic obstructive pulmonary disease (COPD) using method of volumetric capnography.
T.A. MIROSHKINA, S .A. SHUSTOVA, I .B. PONOMARYOVA   +2 more
doaj   +1 more source

Influence of overdistension/recruitment induced by high positive end-expiratory pressure on ventilation–perfusion matching assessed by electrical impedance tomography with saline bolus

Critical Care, 2020
Background High positive end-expiratory pressures (PEEP) may induce overdistension/recruitment and affect ventilation–perfusion matching (VQMatch) in mechanically ventilated patients.
Huaiwu He, Yi Chi, Yun Long, Siyi Yuan, Inéz Frerichs, Knut Möller, Feng Fu, Zhanqi Zhao   +7 more
doaj   +1 more source

Impact of cardiac output and alveolar ventilation in estimating ventilation/perfusion mismatch in ARDS using electrical impedance tomography

Critical Care, 2023
Introduction Electrical impedance tomography (EIT) can be used to assess ventilation/perfusion (V/Q) mismatch within the lungs. Several methods have been proposed, some of them neglecting the absolute value of alveolar ventilation (V A) and cardiac ...
Samuel Tuffet, Tommaso Maraffi, Matthieu Lacheny, François Perier, Anne-Fleur Haudebourg, Mohamed Ahmed Boujelben, Glasiele Alcala, Armand Mekontso-Dessap, Guillaume Carteaux   +8 more
doaj   +1 more source

Mean airway pressure has the potential to become the core pressure indicator of mechanical ventilation: Raising to the front from behind the clinical scenes

Journal of Intensive Medicine, 2021
Mean airway pressure (Pmean) is a common pressure monitoring parameter of mechanical ventilators that is closely correlated with mean alveolar pressure and represents stresses applied to the lung parenchyma during ventilation.
Longxiang Su, Pan Pan, Dawei Liu, Yun Long   +3 more
doaj   +1 more source

Cocaine-Induced Ventilation/Perfusion Mismatch Mimicking Pulmonary Embolism

Journal of Investigative Medicine High Impact Case Reports, 2020
Pulmonary complications from cocaine use can range from bronchospasm to vasospasm leading to pulmonary infarction. Profound vasospasm may also lead to perfusion defects presenting as pulmonary embolism on ventilation-perfusion scan. A 65-year-old patient
Phani Keerthi Surapaneni MD, Temidayo Abe MD, Norberto Fas MD   +2 more
doaj   +1 more source