Regarding pulmonary function test all are TRUE, EXCEPT:-
Total lung volume increases in emphysema
Compliance decreases in interstitial lung disease.
Compliance is total lung distensibility
FEV1 is forced expiratory rate at one minute.
Ans. is 'd' i.e. FEVl5 is forced expiratory rate at one minute FEV1 is the fraction of vital capacity expired during the first second of a forced expiration (FEV1 also k/ a timed vital capacity).Compliance is change in lung volume per unit change in airway pressure ([?]V/[?]P) - It is the stretch ability of lungs and chest wall.Compliance is decreased in:Pulmonary congestion*Interstitial pulmonary fibrosis*Interstitial lung diseases*Compliance in increased inEmphysema *
Functional Anatomy - Respiratory System