Comparison of different coefficients and units in rhinomanometry

The total information of a rhinomanometric measurement is given by the simultaneous registration of flow and pressure during respiration. For characterization of such a measuring curve different methods and units are used. Since no normalized procedure exists up to now, it is difficult to compare measurements of different authors. In this work the relation between various procedures is discussed and methods are given for converting different quantities. The units of the International System are discussed.