Bronchodilation
Mostrando 1-12 de 23 artigos, teses e dissertações.
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1. Efeito do uso de salbutamol nas propriedades mecânicas do sistema respiratório de indivíduos saudáveis, tabagistas e portadores de doença pulmonar obstrutiva crônica / Effect of salbutamol on the mechanical properties of the respiratory system of healthy individuals, smokers and patients with chronic obstructive pulmonary disease
A doença pulmonar obstrução crônica (DPOC) é caracterizada pela limitação de fluxo parcialmente reversível, classificada por níveis de obstrução pós-broncodilatador. Há várias evidências de que o FEV1 sozinho não é capaz de mostrar a broncodilatação de pacientes com DPOC, mesmo naqueles que apresentam melhora clínica. A técnica de oscila
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/11/2012
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2. Eficácia do formoterol na reversão imediata do broncoespasmo / Efficacy of inhaled formoterol in reversing bronchoconstriction
Objetivo: Avaliar efetividade e rapidez de ação do formoterol liberado através de inalador para pó seco na reversão de broncoespasmo induzido pela metacolina. Métodos: Avaliaram-se prospectivamente 84 pacientes com queda do volume expiratório forçado no primeiro segundo 20% após inalação de metacolina. Todos estavam sob investigação de sintomas
Publicado em: 2010
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3. Reprodutibilidade do teste do degrau incremental em pacientes com doença pulmonar obstrutiva crônica. / Reprodutibilidade of the test of the incremental step in patients with pulmonary illness obstrutiva chronicle
The determination of the functional capacity has been considered an important part of assessment in patients with chronic obstructive pulmonary disease (COPD), especially by using testes which are representatives of daily activities. Besides these characteristics the step test is considered a portable test and requires low costs. The objective of this study
Publicado em: 2009
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4. AnÃlise dos efeitos da associaÃÃo da nebulizaÃÃo à ventilaÃÃo nÃo-invasiva na deposiÃÃo do radiaerossol atravÃs de cintilogragia pulmonar durante as exacerbaÃÃes agudas da asma
Background: Asthma is a multifatorial and chronic disease, characterized by airflow obstruction and airways hyperresponsiveness. Inhalation therapy is the first option to revert the bronchospasm presented by patients and noninvasive ventilation (NV) through positive pressure have been used coupling to nebulizations, but there are few and controversial data a
Publicado em: 2008
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5. Mechanisms of beta-receptor stimulation-induced improvement of acute lung injury and pulmonary edema
Acute lung injury (ALI) and the acute respiratory distress syndrome are complex syndromes because both inflammatory and coagulation cascades cause lung injury. Transport of salt and water, repair and remodeling of the lung, apoptosis, and necrosis are additional important mechanisms of injury. Alveolar edema is cleared by active transport of salt and water f
BioMed Central.
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6. Effects of methacholine induced bronchoconstriction and procaterol induced bronchodilation on cough receptor sensitivity to inhaled capsaicin and tartaric acid.
BACKGROUND: The direct effect of bronchoconstriction on cough receptor sensitivity is unknown, and the antitussive effect of beta 2 adrenergic agonists in man has been controversial. This study was designed to throw light on these questions. METHODS: The threshold of the cough response to inhaled capsaicin, a stimulant acting on C fibre endings, and tartaric
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7. Intravenous salbutamol and aminophylline in asthma: a search for synergy.
The bronchodilation produced by increasing intravenous doses of aminophylline, salbutamol, and a combination of aminophylline and salbutamol given in random order was determined in 10 stable asthmatics on three consecutive days. On a fourth day, response to placebo injections was determined. Forced expiratory volume in one second (FEV1) was measured at two-m
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8. Effect of inhaled thiorphan, a neutral endopeptidase inhibitor, on the bronchodilator response to inhaled atrial natriuretic peptide (ANP).
BACKGROUND: The hormone atrial natriuretic peptide (ANP) causes bronchodilation and partially protects against direct and indirect bronchial challenges. Both in vitro and in vivo studies have found that the protective effect of ANP against bronchoconstriction is enhanced by inhibition of the enzyme neutral endopeptidase (NEP). It was hypothesised that pretre
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9. Hyperoxic attenuation of exercise-induced bronchospasm in asthmatics.
To investigate the mechanism of exercise-induced bronchospasm, we measured specific airway conductance before and after exercise in 7 healthy normals, 12 asthmatics with intact carotid bodies, and 5 asthmatics who had had bilateral carotid body resection. The subjects breathed either air or oxygen (randomly assigned) during cycle ergometer exercise. Post-exe
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10. A molecular mechanism of action of theophylline: Induction of histone deacetylase activity to decrease inflammatory gene expression
The molecular mechanism for the anti-inflammatory action of theophylline is currently unknown, but low-dose theophylline is an effective add-on therapy to corticosteroids in controlling asthma. Corticosteroids act, at least in part, by recruitment of histone deacetylases (HDACs) to the site of active inflammatory gene transcription. They thereby inhibit the
National Academy of Sciences.
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11. Bronchial reactivity to methacholine after combined heart-lung transplantation.
The operation of combined heart-lung transplantation results in acute denervation of the heart, lungs, and airways below the level of the trachea. The bronchoconstrictor response to inhaled methacholine of 12 recipients of heart-lung transplants was compared with that of 12 recipients of heart transplants having similar medication and 12 normal subjects. The
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12. Effects of acute and long-term bronchodilator treatment on regional lung function in asthma assessed with krypton-81m and technetium-99m-labelled macroaggregates.
We have investigated the effect of acute and long-term bronchodilator treatment on the distribution of ventilation and perfusion in 15 asthmatics using a gamma camera, krypton-81m (for ventilation) and technetium-99m macroaggregate (for perfusion). Individual peak expiratory flow (PEF) values before bronchodilation were slightly or moderately below the predi