Thèses sur le sujet « Pulmonary functional testing »
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McHenry, Kristen L. « Pulmonary Function Testing : Know Your Numbers ». Digital Commons @ East Tennessee State University, 2016. https://dc.etsu.edu/etsu-works/2541.
Texte intégralSoleimani, Vahid. « Remote depth-based photoplethysmography in pulmonary function testing ». Thesis, University of Bristol, 2018. http://hdl.handle.net/1983/f6a6f7b6-943f-43f7-b684-1612161aee1a.
Texte intégralBarrau, Nathalie. « 3D MR Spirometry ». Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPAST077.
Texte intégralVentilation is a complex function, with unpredictable natural intra- and inter-individual variabilities, sometimes heterogeneous in lung volume. Standard spirometry is the reference exam to assess the ventilatory function from flow-volume loops measured at the mouth during forced expiration. This simple and reliable technique is limited by the necessary cooperation of the patient, as well as by the global nature of its measurement. Since breathing is inherently a three-dimensional phenomenon and lung diseases are generally regional, ventilation should be probed locally.Despite the inherent difficulties in applying MRI to the lung, recent advancements have revealed the potential of functional pulmonary MRI from easily translatable standard acquisitions in clinical settings. Over the past fifteen years, developments have evaluated ventilation based on MRI signal variation during respiration. These techniques rely on a strong assumption of linearity of the MRI signal with lung tissue density. A new method evaluating ventilation locally and dynamically from deformations has been developed: 3D spirometry by MRI. From an average respiratory cycle, the deformation Jacobian and its temporal derivative allow inference of local flow-volume curves. This thesis aims to validate 3D spirometry by MRI, bring it into clinical research, and deepen the understanding of ventilatory mechanics.The multidimensional nature of 3D spirometry by MRI integrates the complexity of respiratory function, but the new technique must still be developed and tested. Methodological developments undertaken during this thesis include optimized reconstruction of pulmonary dynamics, precise segmentation of lobar structures, definition of quantitative biomarkers, as well as normalization of functional maps to enable intra- and inter-subject comparisons. A prospective study on 25 volunteers (10 females, 45 ± 17 years old) breathing freely was conducted, with repeated acquisitions in the supine position. The reliability of the technique was approached by two criteria: its repeatability and accuracy. Measures of local tidal volumes integrated over the lung volume agreed to the measured lung volumes from segmentation. Excellent overall repeatability was found, with residual variability induced by that intrinsic to respiration.The sensitivity of 3D MR spirometry was first studied in 25 healthy volunteers in lying supine and prone positions. Functional maps highlight a gradient of ventilation toward the more gravity-dependent regions, demonstrating the sensitivity of the technique to physiology. Functional atlases were established from normalized individual maps, revealing reproducible nominal patterns of pulmonary ventilation across the volunteer cohort. Spatial distributions highlight the heterogeneity of ventilation during free breathing.Finally, the sensitivity of 3D MR spirometry to obstructive and restrictive pathologies is evaluated through several case studies of neuromuscular diseases, long COVID-19, asthma, and chronic obstructive pulmonary disease (COPD). These studies emphasize the importance of characterizing breathing patterns with contributions from respiratory muscles. Reversibility of asthma with bronchodilator administration was found, with a marked increase in flow rates after bronchodilators. A longitudinal study on a case of severe asthma also demonstrated the effectiveness of biotherapy in improving ventilatory function and reducing residual volume and obstruction
Morgan, Erin, et Janice Lazear. « Implementation of Pulmonary Function Testing in Rural Primary Care ». Digital Commons @ East Tennessee State University, 2019. https://dc.etsu.edu/etsu-works/7080.
Texte intégralGhali, Maged. « Implications of preoperative pulmonary function testing for post liver transplant outcomes ». Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=18802.
Texte intégralRÉSUMÉ Les complications respiratoires sont fréquentes après les greffes et peuvent amener un taux accru de mortalité. Les tests de fonction pulmonaire sont maintenant obtenus régulièrement en phase pré-opératoire. Cependant, leur pertinence dans les cas de greffes hépatique est inconnue. Le but de cette étude est d'évaluer la capacité de prédiction des tests de fonction pulmonaire pré-opératoires sur les complications post-opératoires, la durée de séjour aux soins intensifs et les risques de mortalité post-greffe hépatique. Cette étude rétrospective fut menée à un site de référence pour les greffes hépatiques, soit l'Hôpital Royal Victoria. Nous avons révisé toutes les opérations (531) qui furent effectués chez 462 patients jusqu'au 30 juin 2006. Nous avons considéré les décès, les complications pulmonaires, ainsi que la durée d'intubation et la durée de séjour aux soins intensifs en tant que variables dépendants. Les facteurs prédictives étaient des tests de fonction pulmonaire, l'âge, le sexe, l'origine ethnique, l'histoire de tabagisme, le type de maladie hépatique sous-jacent, le score MELD et le temps ischémique de la greffe. Nous avons utilisé des modèles de régression logistique et de Cox afin d'évaluer la capacité prédictive indépendante des tests de fonction pulmonaire ainsi que des autres variables. 205 patients avaient des données complètes de leurs tests de fonction respiratoire en pré-opératoire. Une réduction dans la capacité pulmonaire totale étant associée de façon significative à la durée de séjour aux soins intensifs, ainsi qu'une durée accrue d'intubation et à un taux accru de mortalité. Ainsi, une diminution de 10% dans la capacité pulmonaire totale respiratoire en pré-opératoire était associée de façon indépendante à une augmentation de 43% du risque de mortalité. Une augmentation du volume résiduel, ainsi qu'une augmentation du temps ischémique et
Shawcross, Anna. « Infant multiple breath washout using a novel open-closed circuit system ». Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/infant-multiple-breath-washout-using-a-novel-openclosed-circuit-system(06f61a8a-f731-4a60-b0fe-ad330582d7bd).html.
Texte intégralCullimore, Annemarie. « Inflammatory airway disease in horses : The association between bronchoalveolar lavage cytology and pulmonary function testing ». Thesis, Cullimore, Annemarie (2015) Inflammatory airway disease in horses : The association between bronchoalveolar lavage cytology and pulmonary function testing. Masters by Research thesis, Murdoch University, 2015. https://researchrepository.murdoch.edu.au/id/eprint/30299/.
Texte intégralSteffen, Priscilla. « Clinical Practice Guideline Implementation for Alpha-1 Antitrypsin Deficiency Testing : Evaluation of an Innovative Method ». Diss., The University of Arizona, 2010. http://hdl.handle.net/10150/194842.
Texte intégralMaduko, Elizabeth. « Development and testing of a neuro-fuzzy classification system for IOS data in asthmatic children ». To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2007. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.
Texte intégralAmbrozin, Alexandre Ricardo Pepe [UNESP]. « Complicações pós-operatórias em cirurgia torácica relacionadas aos índices e testes preditores de risco cirúrgico pré-operatórios ». Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/86296.
Texte intégralCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Algumas variáveis propostas para predizer o risco de complicação pósoperatória (CPO) são a altura no teste da escada (TE) e a distância do teste de caminhada de seis minutos (TC6) e acreditamos que o tempo no teste da escada (tTE) também pode ser utilizado para este fim. Além disso, são utilizados a prova de função pulmonar e os índices pré-operatórios. Objetivo: Determinar se os índices de Torrington e Henderson, American Society of Anesthesiologists, Goldman, Detsky e Charlson, a variável VEF1 da espirometria e as variáveis obtidas nos testes de esforço (TC6 e TE) podem ser preditivos das complicações pós-toracotomia e qual deles seria o melhor preditor dessas complicações. Método: Foram avaliados pacientes com indicação de toracotomia para ressecção pulmonar ou não, maiores de 18 anos. As comorbidades foram obtidas e traçados os índices de Comorbidade de Charlson, de risco de Torrington e Henderson, de Goldman, de Detsky e o ASA. A espirometria foi realizada de acordo com a ATS, em espirômetro Medgraphics Pulmonary Function System 1070. O TC6 foi realizado segundo os critérios da ATS e a distância prevista calculada. O TE foi realizado numa escada à sombra, composta por seis lances, num total de 12,16m de altura. O tTE em segundos percorrido na subida da altura total foi obtido e a partir deste a Potência (P) foi calculada utilizando a fórmula clássica. Também foi estimado o VO2 a partir do tTE (VO2 t) e da P (VO2 P). No intra-operatório foram registradas as complicações e o tempo cirúrgico. E no pós-operatório foram registradas as CPOs. Para análise estatística os pacientes foram divididos em grupos sem e com CPO. Foi aplicado o teste de acurácia para obtenção dos valores preditivos para o TC6 e para o tTE, a curva ROC e dessa o ponto de corte. As variáveis foram testadas para uma possível associação com as CPO pelo teste t de...
Some varieties purposed to predict the postoperative complication (POC) risk are the height in the stair-climbing test (SCT) and the distance in the six minute walk test (6MWT), we also believe that the time on the stair-climbing test can also be used for this purpose. Besides, the pulmonary function test and the preoperative index are also used. Objectives: We aim to determine if the Charlson, Torrington and Henderson, Goldman, Detsky and American Society of Anesthesiologists indexes, the variable FEV1 obtained on the Spirometry and on the Cardiopulmonary Exercise Testing (6MWT, SCT) can be predictive of the complication after thoracic surgery and which one of them would be the best. Method: Patients with indication to thoracic surgery, for resection or not, and older than 18 years old were evaluated. The comorbidities were obtained and the Comorbidity Charlson, Torrington and Henderson risk, Goldman, the Detsky and ASA indexes were calculated. The spirometry was performed according to ATS in Medgraphics Pulmonary Function System 1070. The 6MWT was performed according to the ATS criteria and the predicted distance was calculated. The SCT was performed indoor, on six flights of stairs, which results as a 12,16m climb. The time on the SCT was obtained after finished the stair height total in seconds and the Power (P) was calculated using the class formula. The maximum oxygen uptake (VO2) was estimated from the time of SCT (VO2 t) and the P (VO2 P). In the intraoperative was registered the complication and the surgery time. And in the postoperative was registered the POC. In the statistics analysis, the patients were divided in groups with and without POC. It was applied the accuracy test for the distance 6MWT and for the time in the SCT. We have found the cutoff from the ROC curve. The correlation between the variables and POC were tested using the t test for independent population ... (Complete abstract click electronic access below)
Ambrozin, Alexandre Ricardo Pepe. « Complicações pós-operatórias em cirurgia torácica relacionadas aos índices e testes preditores de risco cirúrgico pré-operatórios / ». Botucatu : [s.n.], 2009. http://hdl.handle.net/11449/86296.
Texte intégralAbstract: Some varieties purposed to predict the postoperative complication (POC) risk are the height in the stair-climbing test (SCT) and the distance in the six minute walk test (6MWT), we also believe that the time on the stair-climbing test can also be used for this purpose. Besides, the pulmonary function test and the preoperative index are also used. Objectives: We aim to determine if the Charlson, Torrington and Henderson, Goldman, Detsky and American Society of Anesthesiologists indexes, the variable FEV1 obtained on the Spirometry and on the Cardiopulmonary Exercise Testing (6MWT, SCT) can be predictive of the complication after thoracic surgery and which one of them would be the best. Method: Patients with indication to thoracic surgery, for resection or not, and older than 18 years old were evaluated. The comorbidities were obtained and the Comorbidity Charlson, Torrington and Henderson risk, Goldman, the Detsky and ASA indexes were calculated. The spirometry was performed according to ATS in Medgraphics Pulmonary Function System 1070. The 6MWT was performed according to the ATS criteria and the predicted distance was calculated. The SCT was performed indoor, on six flights of stairs, which results as a 12,16m climb. The time on the SCT was obtained after finished the stair height total in seconds and the Power (P) was calculated using the class formula. The maximum oxygen uptake (VO2) was estimated from the time of SCT (VO2 t) and the P (VO2 P). In the intraoperative was registered the complication and the surgery time. And in the postoperative was registered the POC. In the statistics analysis, the patients were divided in groups with and without POC. It was applied the accuracy test for the distance 6MWT and for the time in the SCT. We have found the cutoff from the ROC curve. The correlation between the variables and POC were tested using the t test for independent population ... (Complete abstract click electronic access below)
Orientador: Daniele Cristina Cataneo
Coorientador: Antônio José Maria Cataneo
Banca: Roberto Saab Junior
Banca: Paulo Monoel Pego Fernandes
Banca: Irma de Godoy
Banca: Lidia Raquel de Carvalho
Doutor
Lee, Laura Caryn. « Comparative efficacy of three common treatments for equine recurrent airway obstruction ». Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/76818.
Texte intégralMaster of Science
Ziegler, Bruna. « Percepção da dispneia em pacientes com fibrose cística ». reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2011. http://hdl.handle.net/10183/52963.
Texte intégralObjectives: To evaluate dyspnea perception in cystic fibrosis (CF) patients compared with normal subjects, during inspiratory resistive loading and the six-minute walk test (6MWT). Secondarily, to assess the correlation between dyspnea scores induced by resistive loads and those induced by the 6MWT. Methods: cross-sectional study in patients with CF (≥15 years old) and normal subjects. Volunteers underwent inspiratory resistive loading, measurement of maximal respiratory pressures, spirometry, nutritional evaluation, and the 6MWT. Results: Thirty-one CF patients and 31 paired normal subjects were included in the study. As the magnitude of the inspiratory loads increased, dyspnea scores increased (p<.001), but there was no difference between groups in dyspnea score (p=.654) and no group interaction effect (p=.654). SpO2 was lower in CF patients (p<.001) and increased as the magnitude of the loads increased (p<.001), with no interaction effect (p=.364). Twenty-six (84%) normal subjects completed the whole test, compared to only 12 (39%) CF patients (p<.001). Dyspnea scores were higher post-6MWT than at rest (p<.001), but did not differ between groups (p=.080) with no interaction effect (p=.091). SpO2 was lower in CF patients (p<.001) and decreased from resting to post-6MWT in CF patients (p<.001) with an interaction effect (p=.004). Post-6MWT dyspnea scores were significantly correlated with dyspnea scores induced by resistive loads. Conclusion: dyspnea perception in CF patients induced by inspiratory resistive loading and by 6MWT did not differ from normal subjects. However, CF patients discontinued inspiratory resistive loading more frequently. In addition, there were significant correlations between dyspnea perception score induced by inspiratory resistance loading and by the 6MWT.
Biccard, Bruce M. « Cardiopulmonary exercise testing for high-risk South African surgical patients ». Thesis, 2007. http://hdl.handle.net/10413/1302.
Texte intégralThesis (M.Sc.)-University of KwaZulu-Natal, Westville, 2007.
Lin, Chung-Hui, et 林中惠. « The Study of Clinically Applicable, Non-invasive Respiratory/Pulmonary Function Testing by Natural Tidal Breathing Analysis in Small Animals (Domestic Cat Model) ». Thesis, 2015. http://ndltd.ncl.edu.tw/handle/ut7p4d.
Texte intégral國立臺灣大學
獸醫學研究所
104
Respiratory or pulmonary function testing is an objective assessment for evaluating chronic airway diseases, for aiding diagnosis, for stratifying preoperative risk, and for assessing disease progression and therapeutic response in clinical medicine. Although respiratory/pulmonary function assessment is routinely performed in human medicine, it is not widely used in veterinary medicine because of the uncooperative nature of small animal patients. Direct measurement of lung compliance and resistance can be performed to provide information of ventilatory mechanics, nevertheless, the requirement for general anesthesia and intubation could increase risk for respiratory patients and is not acceptable for most of pet owners. As a result, the development of a non-invasive method for assessing pulmonary function is of great importance in small animal clinical medicine. In the past few decades, attempts utilizing different instruments and techniques have been made for potential non-invasive respiratory/pulmonary function testing in cats and dogs, such as tidal breathing flow-volume loop (TBFVL) method that first developed for use in human infants, or barometric whole body plethysmography (BWBP) system that initially used in laboratory rodents. The limits of either method prevent the extensive application of respiratory/pulmonary function assessment in clinical feline and canine patients. The aims of this dissertation were to find out an alternative methodology to analyze natural tidal breathing signals, and seek for a clinically applicable, non-invasive respiratory/pulmonary function testing procedure that can be safely applied on small animal clinical patients. The result of our study has demonstrated a clinically applicable, non-invasive respiratory/pulmonary function testing by natural tidal breathing analysis. Simultaneous visual inspection for breathing waveforms facilitated the identification of artefacts and allowed the recording of stable tidal breathing signals. With the combination of advantages of previously existed instruments and methods, natural tidal breathes can be recorded with the BWBP system and analyzed by a different way that similar to conventional TBFVL method. Breathing pattern recognition is possible under the depiction of pseudoflow and pseudovolume with visual inspection for graphic tracing. Natural tidal breathing patterns could differ between normal animals and diseased ones. In specific disease entity such as feline lower airway disease, selected indices could be useful in indicating disease severity and monitoring therapeutic response. By qualifying and quantifying natural tidal breathing signals, respiratory/pulmonary mechanics could be assessed accordingly and utilized as a non-invasive respiratory/pulmonary function testing.
Gofus, Ján. « Vliv miniinvazivního přístupu na respirační funkce u pacientů po aortální náhradě ». Doctoral thesis, 2021. http://www.nusl.cz/ntk/nusl-438373.
Texte intégralKoucký, Václav. « Detekce časných patofyziologických změn dýchání u dětí s chronickým plicním onemocněním ». Doctoral thesis, 2020. http://www.nusl.cz/ntk/nusl-412517.
Texte intégral