Late Breaking Abstract - The Introduction of Improved Quality Assurance Practices in a Pulmonary Physiology Department

We investigated quality assurance across a team of physiologists carrying out pulmonary function testing over a 6 month period (July-Dec 2023). A retrospective data analysis of 1798 adult patients between 18-95yr was captured using an excel spreadsheet. A new grading system in line with International guidelines was introduced for assessing repeatability of technically acceptable manoeuvres during testing. The parameters for grading were: Spirometry FEV1- forced expiratory volume in 1 second, FVC-forced vital capacity and DLCO-diffusing capacity. We assessed the percentage of Spirometry where the variability of measurements was less than 150ml and DLCO manoeuvres where within 10% for both trials. The department set an agreed KPI of >90% for Spirometry and 85% for Diffusion Capacity. <bold>Results:</bold> <bold>Spirometry v's Quality July-Dec 2023</bold> 1798 adult patients had Spirometry testing completed with a 89% (A) quality mark. Over 6 months, on average 89% of measurements met the repeatability criteria of 150ml. The final 3 months at least 91% of measurements met the criteria. N= 306(84%), 320(83%), 276(91%), 342(91%), 300(93%), 254(91%). Nt=1798(avg. 89%). <bold>Diffusing Capacity v's Quality July-Dec 2023</bold> 1798 patients attempted a DLCO gas exchange test with a 83% (A) quality mark. Over 6 months, on average 83% of measurement met the criteria Vin/VC >85%. For the final 2 months 88% met the criteria. N=306(81%), 320(78%), 276(83%), 342(82%), 300(88%), 254(88%). Nt=1798(avg.83%). <bold>Conclusion</bold>: This quality assurance initiative demonstrates we are reaching our KPI targets. QA is a key component for Physiologists working in a Pulmonary Physiology Department.