PULMONARY FUNCTION TEST-EXAMPLES

SUMMARY

1. Emphysema: obstructive picture, minimal response to beta₂-agonist: < 12% improvement or < 200 mL improvement in FEV₁ or FVC, decreased DLCO

2. Chronic bronchitis: obstructive picture, minimal response to beta₂-agonist: < 12% improvement or < 200 mL improvement in FEV₁ or FVC, normal DLCO

3. Asthma: obstructive picture, significant response to beta₂-agonist: >= 12% improvement or 200 mL improvement in FEV₁ or FVC, normal DLCO

4. ILD: restrictive picture, decreased DLCO

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].