What test measures the amount of air inhaled and exhaled during any respiratory cycle?
a. Tidal volume
b. Vital capacity
c. Dynamic compliance
d. Pulmonary resistance
ANS: A
Tidal volume is defined as the amount of air inhaled and exhaled during any respiratory cycle. When it is multiplied by the respiratory rate, the minute volume is obtained. Forced vital capacity is the maximum amount of air that can be expired after maximum inspiration. It is used to monitor individuals with obstructive airway disease. Dynamic compliance is the relationship between the change in volume and pressure difference. Pulmonary resistance measures the changes in pressure with changes in flow on inspiration and expiration
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