The predictive value of prebronchodilator and postbronchodilator spirometries for respiratory exacerbations, change in forced expiratory volume in 1 s, dyspnoea and exercise capacity during a 5-year period is relatively similar, but postbronchodilator spirometric measures are better predictors of mortality...
“pre-COPD” as presence of > 5% of emphysema and (or) bronchial thickening by computed chromatography (CT) scan and (or) diffusing capacity of the lung for carbon monoxide (DLCO) < 80% of predicted in subjects with respiratory symptoms and post-bronchodilator forced expiratory volume ...
Full Spirometry testing (FVC, SVC, MVV, Pre/Post Bronchodilator) Choice of different flowmeter technologies (Pneumotach or turbine) Integrated dosimeter for accurate and easy bronchial challenge tests (optional) Compliant with latest ATS/ERS standards ...
VO2: peak oxygen uptake; AT: anaerobic threshold; VE/VCO2: ventilatory equivalent for CO2; for functional data: %: percentage of predicted values; *functional values for COPD patients are reported as post bronchodilator therapy ** Anova or Wilcoxon or chi-squared test as appropriate; bold ...
People with older age and lower FEV1%pred tend to have a smaller FVC than VC in pre-bronchodilator pulmonary function test. Acknowledgement The authors would like to thank the technicians in pulmonary function test department for their hard work.References...
However, the short-term and long-term stability of a decreased post-bronchodilator FEV1/FVC ratio has not been reported. We investigated the shifts between diagnostic categories after an initial spirometry test in subjects for whom guidelines recommend investigation for COPD (age ⩾ 40, current or...
BD, bronchodilator; HC, healthy controls. Open and closed circles=% change preplacebo and postplacebo in healthy controls and asthmatic preschool children; open and closed triangles=% change prebronchodilator and postbronchodilator in healthy controls and asthmatic preschool children. The p values ...
Test quality was slightly better for post-BD test sessions compared with pre-BD for both groups of research assistants. Independent predictors of acceptable test quality included participant characteristics: female sex, younger age, greater BD responsiveness; but not study site or prior experience in...
Test quality was slightly better for post-BD test sessions compared with pre-BD for both groups of research assistants. Independent predictors of acceptable test quality included participant characteristics: female sex, younger age, greater BD responsiveness; but not study site or prior experience in...
Using the LLN criterion and pre-bronchodilator test results, the COPD prevalence was 15.4% (SE 0.8), while applying the same criterion to post-bronchodilator test results, prevalence was 10.2% (SE 0.8). Conclusions The overall COPD prevalence among US adults aged 40???79 years varied from ...