Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"lung mechanics"”.
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Lung mechanics in the aging lung and in acute lung injury. Studies based on sinusoidal flow modulation.
Knowledge about lung mechanics is of interest in intensive care to adjust mechanical ventilation and in the lung laboratory for diagnostics and evaluation of patients with various kinds of respiratory diseases. In mechanical ventilation a single inspiratory elastic pressure-volume (Pel/V) curve is …
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Physics-Based Computational Modeling of Mechanics and Perfusion in COVID-19 Infected Lungs
… Histopathological studies as well as global lung dynamics of the disease state of COVID-19 resemble acute respiratory distress syndrome but with some marked differences that have yet to be fully understood. Studying COVID-19 infected lung mechanics and perfusion provides a unique opportunity …
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Electrical Impedance Tomography in 3D: Characterization and Evaluation
… to image regional inhomogeneities in the lungs. This thesis seeks to characterize 3D measurement patterns, capture regional inhomogeneities in the lungs caused by gravitational effects due to change in posture, and to test the ability of 3D EIT to measure change in global lung volume. …
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VENTILAZIONE MECCANICA E VOLUTRAUMA: STUDIO IN VIVO IN UN MODELLO SUINO
… is an essential support for patients with acute lung pathologies, such as acute respiratory distress syndrome and acute lung injury, and it is generally applied in chirurgical practice. Specialists are however aware that, despite of its “life saving” role, this practice presents several negative …
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Is our breathing optimal? : this dissertation is submitted for the degree of Doctor of Philosophy, School of Natural and Computational Sciences, Massey University, New Zealand
… and reflect more accurately the coupling between lung mechanics and gas exchange. It shows how published 6D and 5D models can be reduced to new 3D and 2D models. At its simplest, the 2D model consists of two piecewise linear differential equations. The use of higher dimension models require a new …
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Relationship of Ventilation Ability and Positioning in Left-Sided Congestive Heart Failure Patients
… improved ventilation as measured by specific lung volumes and lung mechanics occurred with upright positioning in normal persons. The effects of specific changes in lung volumes related to position change in congestive heart failure patients has not been documented in literature, although …
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PERFLUOROCHEMICAL AUGMENTED INTRATRACHEAL DELIVERY OF ANTIOXIDANT ENZYMES AND GENES TO ATTENUATE OXIDATIVE STRESS-INDUCED LUNG AND RESPIRATORY MUSCLE ALTERATIONS
… of inflammatory cells, altered pulmonary mechanics and gas exchange prompting increased loading of the respiratory muscle. These abnormalities of pulmonary structure and function increase the work of breathing necessitating increased respiratory muscle force production to maintain alveolar …
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Αιμοδυναμικές και αναπνευστικές επιδράσεις της θειϊκής πρωταμίνης σε σχέση με την οδό και τον ρυθμό χορήγησης: Πειραματική μελέτη
… monitored with Analyzer CO₂ 930-Siemens and Lung mechanics calculator 940-Siemens. ECG monitoring, all pressures measurements and recordings and cardiac output determination were made with a KONE-565A monitor with a six-channel recorder and a CANON-PJ 1080 A printer. All animals were given …
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Modelling cardiopulmonary interactions. Towards anatomically detailed and physiologically accurate cardiorespiratory models
… scalar transport and ODE models describing lung and peripheral gas exchange, lung mechanics and local autoregulation. After a brief literature review, the first part of this thesis presents the methodological framework, detailing the different components of our model and the numerical …
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A Patient-Specific Multiscale Model of Mechanical Ventilation of COVID-19-afflicted Lungs
… has a high risk of causing ventilator-induced lung injury. However, COVID-19 is a relatively recent disease, and there is a lack of detailed understanding of its response to mechanical ventilation. This thesis aims to create a multiscale physics-based computational modeling framework for …