Use of an Analog Model for Determination of Ventilation and Air Distribution in the Lungs
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH
Pagination or Media Count:
The lungs represent a space in which the air is chanelled into innumerable alveolar units. Distribution of air is not uniform even in healthy lungs, the less so in disease with differently ventilated regions. For comparison we used an analogous model with a definitely determined programme functional residual capacity and ventilatory turnover of a certain investigated subject. Nitrogen clearance during oxygen inhalation was measured by continual nitrogen analysor. A spirometer was used as the model identical ventilation as exhibited by the trial subject was performed with it. The pair--lung-model-- corresponds to the simple type of analog computer with an invariable programme for a given purpose. These trials were conducted in 95 subjects with a variety of disorders in order to derive relations of effective lung ventilation and effective model ventilation.
- Medicine and Medical Research
- Computer Hardware