Lung Volumes & Spirometry — Respiratory Physiology

Lung Volumes & Spirometry MCQs: practice questions

Sample Lung Volumes & Spirometry multiple-choice questions from Respiratory Physiology.

1. Tidal volume is the volume of air:

   • A. Inspired or expired with each normal breath
   • B. Remaining after maximal expiration
   • C. Inspired after a normal inspiration
   • D. Expired after maximal inspiration
   • E. Not participating in gas exchange

2. In restrictive lung disease, FEV1/FVC is usually:

   • A. Always 0.5
   • B. Decreased
   • C. Zero
   • D. Increased or normal
   • E. Unable to be measured

3. FEV1 is the volume expired during:

   • A. The residual volume maneuver
   • B. A normal tidal expiration
   • C. The entire vital capacity maneuver
   • D. Maximal inspiration
   • E. The first second of a forced maximal expiration

4. Anatomic dead space consists primarily of:

   • A. Residual volume
   • B. Alveoli with no ventilation
   • C. Pulmonary capillaries
   • D. Pleural space
   • E. Conducting airways

5. If TV is 500 mL and RR is 12/min, minute ventilation is:

   • A. 6 L/min
   • B. 0.6 L/min
   • C. 12 L/min
   • D. 60 L/min
   • E. 5 L/min

6. In a healthy person, physiologic dead space is approximately equal to:

7. In obstructive lung disease, FEV1/FVC is:

8. At the peak of a normal inspiration, lung volume is:

9. Asthma typically causes:

10. If TV is 500 mL, dead space is 150 mL, and RR is 12/min, alveolar ventilation is:

11. Vital capacity equals:

12. Compared with a healthy person, a patient with pulmonary fibrosis has:

13. Pulmonary fibrosis typically causes:

14. Anatomic dead space is approximately:

15. A decrease in FEV1 with a disproportionately larger decrease in FVC suggests:

16. Total lung capacity equals:

17. Expiratory reserve volume is the volume that can be:

18. Normal FEV1 is approximately what fraction of FVC?

19. Residual volume cannot be measured by:

20. Which volume is included in TLC but not measurable by simple spirometry?

21. If TV is 500 mL and anatomic dead space is 150 mL, alveolar ventilation per breath is:

22. Inspiratory reserve volume is the volume that can be:

23. Inspiratory capacity equals:

24. Air trapping in obstructive disease most directly increases:

25. Functional residual capacity equals:

26. Physiologic dead space is the volume that:

27. Residual volume is the volume of air:

28. The volume remaining after a normal expiration is:

29. Physiologic dead space increases with:

30. COPD typically causes: