PULMONARY FUNCTION TEST-VOLUMES

SUMMARY

1. Residual volume (RV): unused space
2. Expiratory reserve volume (ERV): from full unforced end-expiration to full forced end-expiration
3. Tidal volume (TV): volume used in normal unforced ventilation; 6-7 mL per ideal body weight
4. Inspiratory reserve volume (IRV): normal unforced end-inspiration to max end-inspiration

MISC
5. Minute Ventilation (MV) = TV * frequency of respiration
6. Functional Residual Capacity (FCR): volume that remains at the end of a breath (increased in emphysema, decreased in interstitial diseases)
7. Compliance: change in volume/change in pressure
8. Resistance: change in pressure/change in flow

Reference(s)

Wilkinson, I. (2017). Oxford handbook of clinical medicine. Oxford: Oxford University Press.
Hannaman, R. A., Bullock, L., Hatchell, C. A., & Yoffe, M. (2016). Internal medicine review core curriculum, 2017-2018. CO Springs, CO: MedStudy.
Therapeutic Guidelines. Melbourne: Therapeutic Guidelines Limited. https://www.tg.org.au [Accessed 2021].