ASTHMA-INVESTIGATION

SUMMARY

1. Patient must demonstrate at least partially reversible bronchospasm & history compatible with asthma.

2. Response to a short-acting bronchodilator is defined as an increase in the FEV₁ of >= 12% and an increase of at least 200 mL.

3. Bronchoprovocation tests are done in a patient who has normal spirometry and: chronic cough, dyspnoea, wheeze.

4. Exercise-induced bronchospasm (EIB) is diagnosed by a decrease in FEV₁ of >= 10% after graded exercise on a treadmill or a stationary bicycle.

Reference(s)

Wilkinson, I., Furmedge, D. and Sinharay, R. (2017). Oxford handbook of clinical medicine. Oxford: Oxford University Press. Get it on Amazon.
Feather, A., Randall, D. and Waterhouse, M. (2020). Kumar And Clark’s Clinical Medicine. 10th ed. S.L.: Elsevier Health Sciences. Get it on Amazon.
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].