Thirty per cent of patients with a normal PEFR value had an abnormal [FEV.sub.1] or FEF25-75%. As air trapping increased, the ability of a normal PEFR to predict normal [FEV.sub.1] and [FEF.sub.25-75%] readings fell from 83% to 53%. What is meant by control of childhood asth...
Spirometry is a must to diagnose COPD. The diagnosis of COPD is confirmed by spirometry,a test that measures the forced expiratory volume in one second (FEV1), which is the greatest volume of air that can be breathed out in the first second of a large breath. Spirometry also measures the ...
Determining the exact prevalence of AIE is made difficult by barriers including: 1) under-diagnosis due to decreased perception or under-reporting of symptoms by patients [21], 2) suboptimal utilization of spirometry and other diagnostic tests, 3) misclassification of asthma as chronic obstructive pu...