TLC, FRC, and RV are considered normal when they range between 80% and 120% of the predicted value. Static lung volumes have been associated with the sensation of dyspnea and the higher metabolic demands of ventilation in patients with COPD60. Fig. 1: Pulmonary Volumes during rest and ...
Correlation between the predicted and the actual postoperative forced expiratory volume in one second (FEV1) after lung resection: a prospective evaluation... Background: Reduced DLCO has been associated with a rapid decline in spirometric indices in smokers and is shown to be a predictor of the ...
CORRELATION BETWEEN BODY MASS INDEX, GOLD STAGE AND FEV1 PERCENTAGE PREDICTED IN A COHORT OF COPD PATIENTS IN CENTRAL SRI LANKAdoi:10.1111/resp.13207_430NoneJohn Wiley & Sons, LtdRespirology
We found a significant negative correlation between NOstrongsup.聽 /sup/strongand MDA with the FEV1%聽 predicted and positive correlation between vitamin C, vitamin E and GSH with FEV1% predicted in different stages of COPD patients.strong /strongFrom this study we conclude that as the severity...
195 The Burden of Obstructive Lung Diseases (BOLD) program has generally combined the fixed FEV1/FVC ratio of 0.70 in combination with an FEV1 less than 80% of the percentage predicted as the diagnostic criteria for COPD. BOLD has carried out surveys in several parts of the world and has ...
COPD group; however, when the values were calculated as percentages of predicted values, there were no notable differences among the 3 groups. There was a larger proportion of male subjects in the normal variant group (86%) compared with the asthma (48%) and COPD groups (56%) (χ2= ...
In patient with COPD, an FEV1/FEV6 ratio in the lowest quartile (<74% predicted) and second lowest quartile (74-84% predicted) was shown to be an independent predictor of mortality and hospitalizations, and low FEV6 may predict future lung function decline [80]. A meta-analysis of eleven...
To quantify this relationship more precisely, and study heterogeneity, we derived estimates of β for the relationship RR(diff) = exp(βdiff), where diff is the reduction in FEV1 expressed as a percentage of predicted (FEV1%P) and RR(diff) the associated relative risk. We used results ...
(beta, beta relative to never smokers, beta relative to continuing smokers and other indices such as beta divided by height cubed or FEV1change as a percentage of predicted), potential confounding variables used for one or more betas, availability of results for different aspects of smoking, ...
The 24-h FEV1 time profile of olodaterol once daily via Respimat® and formoterol twice daily via Aerolizer® in patients with GOLD 2–4 COPD: results from two 6-week crossover studies Gregory J Feldman, Jonathan A Bernstein, Alan Hamilton, Michael C Nivens, Lawrence Korducki & ...