A model was developed to predict the increased physiological effort of wearing a respiratory protective device. Specifically, the model was designed to predict the effects of varying ventilatory demands on eleven respiratory variables of the man-respirator system, breath frequency (f_b), tidal volume (V_t), inspiratory flow (dvi/dt), expiratory flow (dve/dt), inspiratory mask pressure (P_mi), expiratory mask pressure (P_me), inspiratory intrathoracic pressure (P_ii), expiratory intrathoracic pressure (P_ie), inspiratory mask work (W_mi), expiratory mask work (W_me), and mask leakage index (L_i). The model was tested by experiment in which three male subjects underwent maximal exercise testing with and without the "pressure-demand" respirator. The eleven variables were determined for each thirty second period utilizing on-line computer analysis. Application of the model to these experimental conditions resulted in significant (p<.001) relationships between each of the predicted and observed variables.
| Identifer | oai:union.ndltd.org:unt.edu/info:ark/67531/metadc503866 |
| Date | 12 1900 |
| Creators | Meyer, Steve D. (Steve Douglas) |
| Contributors | Raven, Peter Bernard, 1940-, Jones, Carl E., Gaugl, John F. |
| Publisher | North Texas State University |
| Source Sets | University of North Texas |
| Language | English |
| Detected Language | English |
| Type | Thesis or Dissertation |
| Format | v, 81 leaves : ill., Text |
| Rights | Public, Meyer, Steve D. (Steve Douglas), Copyright, Copyright is held by the author, unless otherwise noted. All rights reserved. |
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