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 11 of 11 for “"Lung Ventilation"”.
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Canine cardiopulmonary responses to one-lung ventilation during thoracoscopic diaphragmatic incision repair and two-lung ventilation during gasless laparoscopic diaphragmatic incision repair
… in dogs;(1) The cardiopulmonary effects of one-lung ventilation (OLV) during thoracoscopic diaphragmatic incision repair (TDIR) and two-lung ventilation (TLV) for gasless laparoscopic diaphragmatic incision repair (GLDIR) in the dog were determined. The changes in cardiopulmonary function were …
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Investigation of Deformable Image Registration Based Lung Ventilation Mapping for Radiation Therapy Using a Hybrid Hyperpolarized Gas MRI Technique
… eradicate thoracic tumors without compromising lung function. Functional avoidance radiation therapy (RT) using lung ventilation mapping techniques would allow for preferential avoidance of functional lung tissue during radiotherapy and potentially reduce RT-induced lung injuries. Additionally, …
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Studies of Lung Micromechanics via Hyperpolarized 3He Diffusion NMR
While high quality MR Images of lungs are difficult to obtain with conventional proton MRI due to the organ's low tissue density, the advent of techniques in noble gas polarization have enabled MR investigations of the lung's more abundant air space rather than its tissue. In addition to …
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Étude de la dynamique laryngée au cours de la ventilation nasale non-conventionnelle par Neuro-asservissement de la ventilation assistée (NAVA) et par oscillations à haute fréquence (VOHF) chez l’agneau nouveau-né sans sédation
… previously shown that nasal pressure support ventilation (nPSV) can lead to an active laryngeal closure in non-sedated newborn lambs. This, in turn, can limit lung ventilation and divert air into the digestive system, with potentially deleterious consequences. Nasal neurally adjusted …
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Disconnection Techniquewith a Bronchial Blockerfor Improving Lung Deflation
BACKGROUND: One lung ventilation (OLV) is accomplished with a double lumen tube (DLT) or a bronchial blocker (BB). In this study, we compared the effectiveness of lung collapse using DLT, BB with spontaneous collapse, and BB with disconnection technique. METHODS: Fifty-two patients undergoing …
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Evaluation of Deformable Image Registration For Improved 4D Ct-Derived Ventilation For Image Guided Radiotherapy
… sequence of 3D CT images of the patient's lungs through the respiratory cycle. Guerrero et al. developed a method to calculate ventilation imaging from 4D CT, which is potentially better suited and more broadly available for IGRT than the current standard imaging methods. The key to …
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Relationship of Ventilation Ability and Positioning in Left-Sided Congestive Heart Failure Patients
… According to the review of literature, 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 …
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Incidence and Pathogenesis of Acute Lung Injury and the Acute Respiratory Distress Syndrome in Humans
Acute lung injury (ALI) and it’s more severe form, acute respiratory distress syndrome (ARDS), are conditions characterised by neutrophilic pulmonary inflammation, refractory hypoxaemia and diffuse alveolar damage. This work reports on the first UK based prospective study of the incidence and …
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VALIDATION OF IMPROVED HARDWARE AND SOFTWARE FOR EXPIRED GAS ANALYSIS INDIRECT CALORIMETRY
… analysis to both an artificial working model of lung ventilation and gas exchange as well as to the Douglas bag technique. In addition, comparisons will be made between expired fractions, ventilation, and computations of VO2, VCO2, and RER between the new system and a commercial mixing chamber …
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Ventilación controlada por volumen vs. ventilación controlada por presión en pacientes sometidos a ventilación de un solo pulmón
El establecimiento de la ventilación de un solo pulmón (OLV) tiene varios inconvenientes como el incremento de las presiones de la vía aérea y aumento del shunt. Estos cambios pueden estar influenciados por el modo ventilatorio escogido. La ventilación controlada por presión (VCP) es un modo …
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Respiratory complications of organophosphorus pesticide poisoning
… Care Unit (ICU) for tracheal intubation and lung ventilation, but up to half die. It is not understood why the case fatality for intubated poisoned patients is so high, but one hypothesis is that the patients, when unconscious, aspirate their stomach contents (including the OP and the solvent …