Maximal Static Respiratory Pressures
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Pressões respiratórias estáticas máximas: parâmetros de análise e influência do estímulo visual
Introdução: A força muscular respiratória é geralmente estimada a partir das pressões geradas nas vias aéreas pela contração dos músculos respiratórios. Dentre os testes disponíveis para este fim, o mais amplamente utilizado na prática clínica é a avaliação das pressões respiratórias estáticas máximas (PREM) ao nível da boca: pressão i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/03/2011
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2. Postural relief of dyspnoea in severe chronic airflow limitation: relationship to respiratory muscle strength.
Maximal static inspiratory and expiratory pressures (Pimax and Pemax) were measured in six different positions in 40 patients with advanced chronic airflow limitation and in 140 normal subjects to determine whether posture influences respiratory muscle strength. Patients with chronic airflow limitation were studied on days 1 and 5 of an acute exacerbation. T
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3. Respiratory muscle function in cystic fibrosis.
Maximal static expiratory and inspiratory mouth pressures (PEmax and PImax) and quadriceps femoris muscle strength were measured in 25 patients aged 16-28 years with cystic fibrosis (mean FEV1 46% predicted). Mean (SD) PEmax was 64% (18%) predicted (below 75% predicted in 16 of the 25 patients), and PImax was 64% (24%) predicted (below 75% predicted in 14 pa
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4. Limitations of measurement of transdiaphragmatic pressure in detecting diaphragmatic weakness.
Intrathoracic (oesophageal), intra-abdominal (gastric), and transdiaphragmatic (Pdi) pressures were studied in 20 untrained, healthy subjects during a full inspiration and repeated maximal static inspiratory efforts. The pattern of pressure generation during these two types of respiratory manoeuvre was highly reproducible in each subject. By contrast, it var
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5. Lung function, hypoxic and hypercapnic ventilatory responses, and respiratory muscle strength in normal subjects taking oral theophylline.
Methylxanthines are known to be respiratory stimulants and are thought by some to augment hypercapnic and hypoxic ventilatory drive and improve respiratory muscle strength. Hypoxic and hypercapnic ventilatory responses were measured in 10 normal subjects before, during, and after administration of theophylline for three and a half days. Pulmonary function, c