Airway Resistance
Mostrando 1-12 de 173 artigos, teses e dissertações.
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1. Evaluation of lung function in patients submitted to total laryngectomy,
Resumo Introdução: A condição pós-laringectomia é caracterizada por várias alterações na função pulmonar. Uma estimativa confiável da função pulmonar pode ser muito útil em pacientes laringectomizados para prevenir complicações após as intervenções cirúrgicas e avaliar os resultados do tratamento. Objetivo: Caracterizar a presença de
Braz. j. otorhinolaryngol.. Publicado em: 07/11/2019
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2. Model of single-sized endotracheal tube for adults
RESUMO Objetivo Simular diferentes diâmetros de tubos endotraqueais e verificar os aspectos fluidinâmicos, considerando medições de fluxo e resistência. Métodos Foi utilizado um software de fluidinâmica para calcular o fluxo médio e a resistência das vias aéreas nos tubos endotraqueais com diâmetro de 6,0, 7,0, 7,5, 8,0, 9,0 e 10,0mm, em tempera
Einstein (São Paulo). Publicado em: 17/10/2019
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3. Mecânica respiratória de pacientes com obesidade mórbida
RESUMO Objetivo avaliar os diferentes componentes da resistência do sistema respiratório e a força muscular respiratória, bem como investigar a ocorrência de limitação de fluxo expiratório (LFE) de pacientes obesos mórbidos (OM) na posição sentada. Métodos a amostra foi composta de OM (IMC ≥ 40 kg/m2) e de indivíduos não obesos (NO) com IMC
J. bras. pneumol.. Publicado em: 17/10/2019
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4. Efeitos agudos da hiperinsuflação com o ventilador com aumento do tempo inspiratório sobre a mecânica respiratória: ensaio clínico cruzado randomizado
RESUMO Objetivo: Avaliar os efeitos da hiperinsuflação com o ventilador sobre a mecânica respiratória. Métodos: Foi realizado ensaio clínico cruzado randomizado com 38 pacientes ventilados mecanicamente com infecção pulmonar. A ordem da hiperinsuflação ou controle (sem alterações nos parâmetros) foi randomizada. A hiperinsuflação foi realiza
Rev. bras. ter. intensiva. Publicado em: 14/10/2019
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5. Vitamin D3 levels and NLRP3 expression in murine models of obese asthma: association with asthma outcomes
Vitamin D (25(OH)D3) is an essential nutrient that plays a role in the immune system. Serum 25(OH)D3 is found to be associated with asthma. However, the role of vitamin D in obese asthma remains unclear. Therefore, we investigated the association between vitamin D levels and asthma outcomes in a murine model of obese asthma. We also evaluated NLRP3 inflammas
Braz J Med Biol Res. Publicado em: 13/11/2017
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6. Tangeretin has anti-asthmatic effects via regulating PI3K and Notch signaling and modulating Th1/Th2/Th17 cytokine balance in neonatal asthmatic mice
Asthma is a chronic allergic disease characterized by airway inflammation, airway hyper-responsiveness (AHR), and mucus hypersecretion. T-lymphocytes are involved in the pathogenesis of asthma, mediating airway inflammatory reactions by secreting cytokines. The phosphoinositide 3-kinase (PI3K) and Notch signaling pathways are associated with T cell signaling
Braz J Med Biol Res. Publicado em: 20/07/2017
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7. An overlooked cause of resistant hypertension: upper airway resistance syndrome - preliminary results
OBJECTIVE: Upper airway resistance syndrome is a sleep-disordered breathing syndrome that is characterized by repetitive arousals resulting in sympathetic overactivity. We aimed to determine whether upper airway resistance syndrome was associated with poorly controlled hypertension. METHODS: A total of 40 patients with resistant hypertension were enrolled
Clinics. Publicado em: 2014-11
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8. Continuous positive airway pressure setups evaluated at simulated exercise conditions
INTRODUCTION: Studies have shown increases in airway opening pressure (Pao) swings and work of breathing (WOB) by different continuous positive airway pressure (CPAP) devices at rest, but few address this issue during exercise. The aim of the present work was to analyze the imposed WOB (WOBi), the apparent resistance (Rapp) and swings of Pao (deltaP) of 3 CP
Rev. Bras. Eng. Bioméd.. Publicado em: 2014-06
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9. Oscillation mechanics of the respiratory system in never-smoking patients with silicosis: pathophysiological study and evaluation of diagnostic accuracy
OBJECTIVES: Silicosis is a chronic and incurable occupational disease that can progress even after the cessation of exposure. Recent studies suggest that the forced oscillation technique may help to clarify the changes in lung mechanics resulting from silicosis as well as the detection of these changes. We investigated the effects of airway obstruction in s
Clinics. Publicado em: 2013-05
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10. Tomographic and functional findings in severe COPD: comparison between the wood smoke-related and smoking-related disease
OBJECTIVE: Wood smoke exposure is a risk factor for COPD. For a given degree of airway obstruction, the reduction in DLCO is smaller in individuals with wood smoke-related COPD than in those with smoking-related COPD, suggesting that there is less emphysema in the former. The objective of this study was to compare HRCT findings between women with wood smok
J. bras. pneumol.. Publicado em: 2013-04
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11. Comparison of Celsior and Perfadex lung preservation solutions in rat lungs subjected to 6 and 12 hours of ischemia using an ex-vivo lung perfusion system
OBJECTIVE: This study evaluated the performance of lungs that were preserved with different solutions (Celsior, Perfadex or saline) in an ex vivo rat lung perfusion system. METHODS: Sixty Wistar rats were anesthetized, anticoagulated and randomized into three groups (n = 20). The rats were subjected to antegrade perfusion via the pulmonary artery with Perfad
Clinics. Publicado em: 2012-11
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12. Medida da resistência das vias aéreas pela técnica do interruptor em crianças nascidas prematuramente
OBJECTIVE : To evaluate the airway resistance by interrupter technique (Rint) in preschool children born prematurely. STUDY DESIGN : Cross-sectional study of cohort premature infants born between (2004-2005). Data collection was conducted from November 2008 and May 2010. Anthropometric measurements were performed on the test day. The Rint was measured with t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/08/2011