An analysis of the model performance under normal and abnormal conditions is presented. The effects of changes in the alveolar ventilation rate on the inspiratory time, expiratory time, pause period, respiratory frequency, tidal volume, dead space volume and change in end expiratory level are considered. Moreover, theoretical predictions of the effects of added resistance loads are given. The results are displayed for three different values of the elastance. Comparisons with available experimental data show that the model predictions are in good accordance with observations under both normal and loaded conditions. None of the previous models have been able to reproduce the overall pattern of breathing as accurately as the present hierarchical model.
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