In tutorial 2, we explore how to identify and rectify the most common errors in spirometry, providing a criteria for good quality spirometry and different examples of poor technique, the implication to the test results, and how to improve the technique of the patient so we meet all the criteria.

Key messages:

• There are loads of different techniques to get the best results from your patients, including clear instructions, demonstrating the manoeuvres, and some visual incentives. Find what works for you and your patients.
• The acceptability and reproducibility criteria tells us whether the patient is performing the manoeuvre with good technique, and that their results reflect their actual lung function. If you don’t meet these criteria, the spirometry is not quality assured.
• Reproducibility is quite simple the closeness of the test results – it is only possible to reproduce something if you are performing it maximally. In spirometry, we are looking for 3 measurements within 5%.