نتایج جستجو برای: forced oscillation technique

تعداد نتایج: 693752  

2017
Antonio Molino Francesca Simioli Anna Agnese Stanziola Mauro Mormile Maria Martino Maria D’Amato

BACKGROUND Small airways are considered the major site of airflow limitation in COPD. Impulse oscillometry (IOS) is a forced oscillation technique, which provides passive measurement of lung mechanics. It can differentiate small airway from large airway obstruction and is more sensitive than spirometry for peripheral airway disease. In this study the efficacy of the combination of Indacaterol/G...

Journal: :The European respiratory journal 1995
N M Wilson P Bridge S B Phagoo M Silverman

The aim of this study was to compare the feasibility of three techniques for measuring the response to bronchial challenge in young children: a direct airway measurement, the forced oscillation technique (FOT) for determining respiratory system resistance at 6 and 8 Hz (Rrs6 and Rrs8), and two indirect methods, the change in transcutaneous oxygen tension (PtcO2) and the detection of wheeze on a...

Journal: :Revista portuguesa de pneumologia 2014
M Sant' Anna R F Carvalhal J R I Carneiro M S Lapa W A Zin J R Lugon F S Guimarães

This study aimed to investigate the association between respiratory mechanics and autonomic modulation in morbidly obese patients. We evaluated 10 morbidly obese subjects (BMI=52.9±11.2kg/m(2)), aged 23-58 years. Assessment of respiratory mechanics was done by the forced oscillation technique (FOT), and cardiovascular autonomic function was recorded by heart rate variability analysis (HRV). The...

Journal: :Thorax 1990
Y T Wang C I Coe N B Pride

Baseline airway geometry is thought to be an important determinant of the airway response to challenge; this geometry is altered by changing posture. The effect of changes in posture on airway calibre, midtidal lung volume, and the airway response to inhaled histamine was studied in eight healthy subjects (four female; mean (SD) age 29.8 (5.1) years, FEV1 3.54 (0.65) 1). Each subject was studie...

Journal: :The European respiratory journal 2010
E Oostveen S Dom K Desager M Hagendorens W De Backer J Weyler

Persistent wheeze is a common chronic disease in early childhood and later may progress to asthma. However, the association between pre- and post-bronchodilator lung function and the wheezing phenotype in preschool children is not known. Children 4 yrs of age involved in a prospective birth cohort study (in Antwerp, Belgium) concerning perinatal factors and the occurrence of asthma and allergie...

2009
Barry Edmonston William H. Frey

In this chapter we examine how recent iinmigration affects population redistribution within the United States, both directly ,and indirectly, by promoting a Itcoadary domestic migration among native-born residents. Although this impaCt has been given less prominence in public and academic forums than recent immigration'. impact on the nation as a whole, the redlstributional aspects of Immiarado...

Journal: :The European respiratory journal 1999
R Farré M Rotger F Marchal R Peslin D Navajas

The forced oscillation technique (FOT) allows easy assessment of bronchial reactivity. The use of a standard FOT generator (SG) results in changes in respiratory system resistance (delta Rrs,SG) which are affected by an artefact caused by the extrathoracic upper airway (EUA). The aim was to improve the FOT assessment of bronchial reactivity with the SG by computing the change in FOT admittance ...

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