Resonant frequency of the chest-lung system by analysis of the respiratory flow curve |
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Authors: | G Hahn |
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Institution: | Abteilung Physiologie, Max-Planck-Institut für experimentelle Medizin, G?ttingen, F.R.G. |
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Abstract: | 1. Resonant frequency of the chest-lung system in six tracheotomized, spontaneously breathing dogs was determined by analyzing the shape of the respiratory flow curve. 2. The resonant frequency was calculated from the periodic deviations from a sinusoidal flow pattern observed in the inspiratory phase of the breathing cycle. 3. Mean (+/- S.D.) resonant frequency was 6.1 +/- 0.9 Hz which was very close to the panting frequency (5.7 Hz) of the same dogs. 4. Resonant frequencies of the respiratory system in various species are compared. |
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