True in Asthma:
Ans. B- Increased FRC Increased Residual VolDiseases that REDUCE compliancea. Fibrosisb. Pulmonary hypertension/congestionc. Alveolar atelectasisd. Reduced surfactant (increased surface tension) e.g. artificial ventilation, prematurityDiseases that INCREASE compliance:a. Pulmonary emphysema (alteration in elastic tissue) > static compliance is Increased but dynamic compliance is reduced.b. Normal ageing (alteration in elastic tissue)c. Asthma (reason unknown).
Increased FRC Reduced Residual Volume
Increased FRC Increased Residual Vol
Reduced FRC Reduced Residual Volume
Reduced FRC Increased Residual Volume
Respiratory System