Mikulski MA, Gerke AK, Lourens S, Czeczok T, Sprince NL, Laney AS, et al. Agreement between fixed-ratio and lower limit of normal spirometry interpretation protocols decreases with age. J Occup Environ Med. 2013;55(7):802-8.Mikulski MA, Gerke AK, Lourens S, Czeczok T, Sprince NL...
Good published equations for forced expiratory volume in 1 second (FEV 1 ) over forced expiratory volume in 6 seconds (FEV 6 ) and FEV 1 over forced vital capacity (FVC) often significantly mis-identified the lower limit of normal (LLN) targets in both younger and older adults. To improve...
Quality of life studies assess the physical condition, as poor physical condition can limit daily mobility and the ability to move and work. One of the main causes of limitations in daily mobility might be the physical losses that occur with increasing age, which results in reduced muscle force...
European Journal of Medical Research (2023) 28:189 https://doi.org/10.1186/s40001-023-01151-1 European Journal of Medical Research RESEARCH Open Access Comparison of the lower limit of normal to the fixed ratio method for the diagnosis of airflow obstruction at high ...
We are left with predicting reference values, establishing some type of lower limit of normal and calling patients with measured values outside the limits "abnormal". If limits are set using 95th percentile or 95% confidence limits, we arbitrarily choose to classify 5% of healthy people as ...
SpirometrySpirometric abnormalitiesLower limit of normalBackground: Although the relation between radiograMarek A. MikulskiAlicia K. GerkeJohn D. Newell Jr.Ann M. MurrayCarmen J. SmithLaurence J. FuortesInternational journal of occupational and environmental health: Official journal of the International ...
lower limit of normalFEV1PURPOSE The way in which spirometry is interpreted can lead to misdiagnosis of chronic obstructive pulmonary disease (COPD) resulting in inappropriate treatment. We compared the clinical relevance of 2 criteria for defining a low ratio of forced expiratory volume in 1 second...
The FEV_1/VC ratio to define bronchial obstruction: Should we use a fixed ratio or the lower limit of normal?SpirometryObstructive ventilatory defectGLI reference valuesTiffeneau ratioGOLDIntroduction. - While the screening of chronic obstructive lung diseases (COPD, asthma, etc.) constitutes a ...
SpirometryNever smokersWomenBackground: There is controversy as to whether airflow limitation should be defined as forced expiratory volume in 1 s (FEV1)/vital capacity (VC) < 0.7 or as FEV1/VC < the lower limit of normal (LLN). The aim was to examine whether different definitions of air...
Does Low FEV1 in Addition to Fixed Ratio and/or Lower Limit of Normal of FEV1/FVC Improve Prediction of Mortality in COPD? The NHANES-III-linked-mortality CohortChronic obstructiveMortalityPulmonary diseaseSpirometrySurvival analysisPurposeThere is presently an ongoing debate on the relative merits of ...