Reproducibility Of Indicators FVC And FEV1 Guarantee That

Reproducibility of indicators FVC and FEV1 guarantee that results Truly enough represent functions of the easy patient. Thus The attention of the doctor should be concentrated to 3 key parametres: FVC, FEV1 and relation FEV1 to FVC. In the United States specifications of the measured Indicators and limits of normal values are defined on Hankinson et all [NHANES], including a set III. These specifications provide The certain equations for white, the Afro-Americans and Mexicans (sm Appendices). If the patient belongs to other ethnic group, Settlement specifications and the bottom limits of normal values, Provided for white on Hankinson et al should be reduced on 12 % through multiplication of due size on 0.88 before comparison with Results of research of the patient. Features of revealing of infringements on Obstructive defects Not proportional reduction of volumes FEV1 on To comparison with FVC (and consequently parity FEV1 to FVC is used) - The important sign of an obstructive syndrome and illnesses of a lung.