Question 310 · LEK · Obstruction vs restriction
A spirometry result showing reduced vital capacity (VC) below the lower reference limit with normal or increased FEV₁/VCmax value suggests restriction. Which of the following should be performed in order to clarify the cause of the VC reduction?
- A. exercise test.
- B. post bronchodilator test.
- C. impulse oscillometry.
- D. lung diffusion testing.
- E. body plethysmography.
Hint
Restriction is defined by a lung volume that spirometry is unable to measure.
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