Methacholine responsiveness in infants assessed with low frequency forced oscillation and forced expiration techniques
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چکیده
منابع مشابه
Methacholine responsiveness in infants assessed with low frequency forced oscillation and forced expiration techniques.
BACKGROUND The contribution of the pulmonary tissues to the mechanical behaviour of the respiratory system is well recognised. This study was undertaken to detect airway and lung tissue responses to inhaled methacholine (Mch) using the low frequency forced oscillation technique (LFOT). METHODS The respiratory system impedance (Zrs, 0.5-20 Hz) was determined in 17 asymptomatic infants. A model...
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The objective of this study was to compare bronchial challenge tests with two substances [histamine (H) and methacholine (M)] and two methods of measuring the effect parameter FEV1 and pulmonary impedance [with the forced oscillation technique (FOT)] in order to determine which test is the shortest, and gives the least (drug) load to the patient. Furthermore, it was considered whether the resul...
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The measurement of forced expiratory volume in one second (FEV1) is often used to assess the effect of bronchial provocations, and deep inspiration is required beforehand. This may briefly alter the bronchial tone in a variable way in some subjects. The forced oscillation technique (FOT) is a test used to characterize the mechanical impedance of the respiratory system, and prior deep inspiratio...
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ژورنال
عنوان ژورنال: Thorax
سال: 2001
ISSN: 0040-6376
DOI: 10.1136/thorax.56.1.42