0
1991.
[Possibilities of diagnosis of bronchial obstruction].
The functional parameters Raw, Rrs, FEV1, RV, FEF25 and FEF50 have been examined in 1000 patients with bronchial obstruction. Measurement of airway resistance is the precise examination for bronchial obstruction. For the routine clinical examination the interruptional measurement of Rrs is sufficient (correlation test + 0.56). Resistance may be measured indirectly by dynamic pulmonary volume testing (correlation FEV1: Raw = -0.55; FEF50: Raw = -0.63).