| Popis: |
Measurements of pulmonary function were made on twelve female and eight male asymptomatic asthmatic patients, 11 to 66 years of age. In general they showed decrease in the vital capacity and inspiratory capacity; an increase in the F.R.C. and in the residual volume, both absolutely and in relation to total capacity; slight hyperventilation; decrease in the M.B.C. (out of proportion to the reduction in V.C.); abnormality in intrapulmonary gas distribution; and slightly abnormal spirograms. The M.B.C., V.C. and intrapulmonary gas distribution improved following administration of a bronchodilatory drug in many patients indicating that the abnormalities were reversible at least in part and that many asthmatic patients have definite bronchospasm in the absence of signs or symptoms. |
