Question

What changes in pulmonary function values would occur in an asthma patient when compared to the values from a healthy person?

Select one:

a. more than one of the above are correct

b. none of the above are correct

c. an increased FEV1

d. an increase in FEV1/FVC ratio

e. an increased FVC

Answer 1

Correct answer- option B : none of the above are correct

Explanation- asthma is a chronic inflammatory disorder of large airways like trachea and bronchi due to increased hyper responsiveness to multiple intrinsic and extrinsic stimuli producing reversible airflow obstruction due to inflammatory response to these stimuli (muscle spasm, mucosal edema, secretions)

And hence producing obstructive type of pattern in pulmonary function test

Changes in pulmonary function test are:-

FEV1- it stands for forced expiratory volume in first second which decreases due to obstruction of airways

FVC- there is no change in forced vital capacity

Therefore, FEV1/FVC = decreases