Argument for changing criteria for bronchodilator responsiveness

Criteria for bronchodilator response.

Bronchodilator responsiveness: interpret with caution.

Bronchodilator responsiveness (BDR) is widely considered to be a key diagnostic criterion for asthma, and is used to differentiate asthma from chronic obstructive pulmonary disease (COPD). Currently, the threshold of a 12% increase in FEV1 from baseline following inhaled salbutamol, with at least a 200 ml increase in absolute terms, is recommended as a response indicative of asthma, although re...

Bronchodilator responsiveness in patients with COPD.

The degree of acute improvement in spirometric indices after bronchodilator inhalation varies among chronic obstructive pulmonary disease (COPD) patients, and depends upon the type and dose of bronchodilator and the timing of administration. Acute bronchodilator responsiveness at baseline was examined in a large cohort of patients with moderate-to-very-severe COPD participating in the Understan...

Bronchodilator Responsiveness and Reported Respiratory Symptoms in an Adult Population

BACKGROUND The relationship between patient-reported symptoms and objective measures of lung function is poorly understood. AIM To determine the association between responsiveness to bronchodilator and respiratory symptoms in random population samples. METHODS 4669 people aged 40 years and older from 8 sites in Canada completed interviewer-administered respiratory questionnaires and perform...

islanding detection methods for microgrids

امروزه استفاده از منابع انرژی پراکنده کاربرد وسیعی یافته است . اگر چه این منابع بسیاری از مشکلات شبکه را حل می کنند اما زیاد شدن آنها مسائل فراوانی برای سیستم قدرت به همراه دارد . استفاده از میکروشبکه راه حلی است که علاوه بر استفاده از مزایای منابع انرژی پراکنده برخی از مشکلات ایجاد شده توسط آنها را نیز منتفی می کند . همچنین میکروشبکه ها کیفیت برق و قابلیت اطمینان تامین انرژی مشترکان را افزایش ...