Which of the following can decrease the FEF ₂₀₀₋₁₂₀₀ ?
I.Obstructive disorders
II.Restrictive disorders
III.Age
A) I, II, and III
B) I and III only
C) I only
D) II and III only

Question

Quizplus · Accepted Answer

FEF ₂₀₀₋₁₂₀₀ is a measure of the forced expiratory flow during the middle portion of a forced vital capacity maneuver. Obstructive disorders such as chronic obstructive pulmonary disease (COPD) can decrease the FEF ₂₀₀₋₁₂₀₀ due to airway obstruction. Restrictive disorders can also impact lung function and decrease the FEF ₂₀₀₋₁₂₀₀. Additionally, age can be a factor in decreasing FEF ₂₀₀₋₁₂₀₀ due to natural physiological changes in the respiratory system. Therefore, all three factors can decrease FEF ₂₀₀₋₁₂₀₀, making choice A the correct answer.

Which of the Following Can Decrease the FEF ₂₀₀₋₁₂₀₀