Spirometry normal values Things like your height, weight, age, sex, and racial or ethnic background will help determine the normal range for your spirometry results. In general, here are the ranges your doctor will look for: FEV-1: 80% to 120% FVC: 80% to 120% Do I Need Spirometry?
In this study, we report age- and height-dependent reference limits for FEV1, FVC, and FEV1/FVC in a large population, and prediction equations for the lower limit of normal and median values for a sample containing a large proportion of healthy elderly.Daan Willem Loth...
A low FVC A normal FEV1/FVC ratio (meaning that both values are proportionately decreased)8 Treating Obstructive and Restrictive Lung Diseases Obstructive/Restrictive Disease A combination of both obstructive and restrictive breathing patterns may be seen when a person has more than one lung disease, ...
In the earlier study [14] we measured the lower limits of normal (LLN), Z-scores and percentiles for FEV1, FVC, FEV1/FVC, and FEF25–75%for each person. We determined agreement between the observed values in our population and the GLI reference values. According to the agreement by the ...
An obstructive pattern on spirometry is identified numerically by a reduction in the ratio of FEV1to the FVC. When FEV1/FVC is reduced to less than normal (best defined by 95% confidence intervals around the normal values, information that is provided electronically by modern computerized spirometer...
Multi-ethnic reference values for spirometry for the 3–95-yr age range: the global lung function 2012 equations The aim of the Task Force was to derive continuous prediction equations and their lower limits of normal for spirometric indices, which are applicable glob... PH Quanjer,S ...
Airrateindex=Normal:=1MVVactive/predictive%VCactive/predictive%DegreesofLungDisfunction VCorMVVact/pre%FEV1%Normal>80>70Mildreduce80-7170-61Mediatereduce70-5160-41Severereduce50-21<=40Respiratoryfailure<=20ClassificationofVentilativeFunctionDisorder obstructionrestrictionmixFEV1/FVCNorMVVorNVCNorRateindex<1.0...
Which predicted or normal values are supported? You can find the product specification on the respective product pages. The specification contains a list of all supported normal values. To get more detailed information about the supported parameters, age range, ethnicities and height range of each ...
肺功能发展简史 肺功能发展已有300余年历史，从水封式——楔型式——滚筒式肺计量——电子计算机配合1679年——BORELLI首先进行肺容量测定1846年——HUTCHINSON提出肺活量概念1919年——NIANSTROHL提出用力肺活量[FVC]1967年——DOLLFUSS提出小气道疾病概念和小气道功能特点1979年——美国胸科...
Discriminating measures and normal values for expiratory obstruction. Chest. 2006;129(2):369–377. 32. Gelb AF, Williams AJ, Spirometry ZN. FEV1 vs FEF25-75 percent. Chest. 1983;84(4):473–474. 33. Al-Mutairi SS, Sharma PN, Al-Alawi A, Al-Deen JS. Impulse oscil- lometry: an ...