P083 Evaluation of OSA in children: Defining the scope of a paediatric sleep service

INTRODUCTION: The sleep unit runs as a diagnostic paediatric service, and does not provide titrations as part of its scope. This study evaluates the requirement for titration studies for our patient cohort to better understand the scope of service. Obstructive sleep apnoea (OSA) affects 0.7%-13% of the general paediatric population, where a normal AHI is <1, mild >1-4.99, moderate >5-9.9 and severe OSA >10. METHOD: A retrospective audit was undertaken of patients who attended between January and April 2022. Patients <2 years old and oxygen titration studies were excluded. Data was obtained by collating information from electronic medical records and physician reports. Parameters analysed: study indication, gender, AHI, desaturations, and BMI percentile. RESULTS: Preliminary data (n=101) (males 59.6%, age 8.6 ±4.3SD) shows that 12.9% (Male n=7; age 8.9 ±4.9SD) of our paediatric patients have OSA. 61.5% were mild, 7.7% were moderate and 30.8% of those had severe OSA. Patients had an average oximetry of 96% (±1.3SD) at baseline and an average Nadir of 83% (±10.1SD). It was also found that 53.8% of patients with OSA had a BMI percentile well above the healthy range. Other preliminary findings show 58% of the patients were snorers, and 8.9% of the patients were diagnosed with periodic limb movements. DISCUSSION: Only patients with severe OSA were referred externally for bi-level studies. Of the remaining OSA positive patients, adenotonsillectomy was recommended for three subjects, and the rest received no bi-level intervention. The data suggests a diagnostic only laboratory is sufficient to service our paediatric population.