Which of the following is likely to have airway obstruction?
Q1. Explain your answer.
Q2. Define vital capacity and FEV1.
A1. Subject B is likely to have airway obstruction. (FEV1<70%
of normal value).
A2. Vital capacity: Maximum volume of air that can be expired
after a deep maximal inspiration.
FEV1 is the fraction of forced vital capacity expired in 1st sec of exhalation. FEV1= 80-82%