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Optimal sample frequency in computerized rhinomanometry. Development and method
F Versnick1, P Clement, M Nyssen
1Dept. of O.R.L., Academic Hospital V.U.B., Brussels, Belgium.
Rhinology
|December 1, 1991
Abstract:
The authors studied the pressure/flow signals generated during active anterior rhinomanometry of 25 subjects, presenting a normal transnasal breathing. By means of a Fourier transformation, the frequency content of these signals was analyzed. This investigation demonstrated clearly that signals with a frequency of more than 50 Hz no longer yield any further information about the transnasal ventilation.