[Principle of solid-frequent oscillo-resistometry].
A small device for the oscillatory measurement of both respiratory resistance and residual volume (SIRE-GNOST FD5), introduced in the late 70ies, found wide-spread use. It is working with a constant frequency of 10 Hz and uses a simple signal conditioning to combine the two components of the "complex" respiratory impedance into a single parameter "Ros", thus allowing to plot e.g. Resistance-Volume-Curves.
Korn
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D000403:Airway Resistance; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000175:diagnosis*; D008176:Lung Volume Measurements / Q000295:instrumentation*; D008838:Microcomputers; D009991:Oscillometry / Q000295:instrumentation*; D012123:Pulmonary Ventilation; D012016:Reference Values; D012115:Residual Volume / Q000295:instrumentation*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*
Prinzip der festfrequenten Oszillo-Resistometrie.