LIST OF FIGURES
Figure 1
Typical polygraph tracing from which physiologic data was
obtained. Of the 5 parameters monitored, 3, tidal volume, peak
expiratory flow rate, and respiratory rate may be read directly
from the chart.
Figure 2
Response of a normal dog to bronchial challenge with 1 mg hist
amine. A represents changes in parameters of respiratory
function.  = respiratory resistance; O = tidal volume;
A = dynamic compliance; A = peak expiratory flow rate;
 = respiratory rate. B represents changes in arterial
blood gases.  = pC02 and A = p2 .
Figure 3
Response of a normal dog to bronchial challenge with 1 mg hist
amine. A represents changes in parameters of respiratory func
tions. B represents changes in arterial blood gases. Symbols
as in figure 2.
Figure 4
Response of a normal dog to bronchial challenge with 50 mg hist
amine. A represents changes in parameters of respiratory func
tion. B represents changes in arterial blood gases. Symbols
as in figure 2.
Figure 5
Response of a normal dog to bronchial challenge with 50 mg hist
amine. A represents changes in parameters of respiratory func
tion. B represents changes in arterial blood gases. Symbols
as in figure 2.
Figure 6
Response of a normal dog to multiple bronchial challenge with
histamine. The initial challenge was performed with 1 mg hist
amine and the subsequent challenge with 3 mg histamine. A re
presents changes in parameters of respiratory function. B re
presents changes in arterial blood gases. Symbols as in figure
2.
Figure 7
Response of a normal dog to multiple bronchial challenge with
histamine. The initial challenge was performed with 10 mg hist
amine and the subsequent challenge with 15 mg histamine. A re
presents changes in parameters of respiratory function. B repre
sents changes in arterial blood gases. Symbols as in figure 2.
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