RT Journal Article SR Electronic T1 30 A comparison of Masimo Rad97 and Somnotouch oximeters in the assessment of sleep disordered breathing in paediatric patients JF BMJ Open Respiratory Research JO BMJ Open Resp Res FD British Thoracic Society SP A15 OP A16 DO 10.1136/bmjresp-2021-bssconf.27 VO 8 IS Suppl 1 A1 Madge, Joe A1 Blyth, Natalie A1 Patel, Prakash A1 Luyt, David A1 Ahmed, Imad YR 2021 UL http://bmjopenrespres.bmj.com/content/8/Suppl_1/A15.2.abstract AB Introduction Overnight oximetry is recommended as an initial screening tool to diagnose sleep disordered breathing (SDB) in children (Hang et al 2015). Oximetry is a key component of cardio-respiratory sleep studies (CRSS). Most CRSS equipment has integrated oximeters. This study aims to compare the oxygen saturation data obtained by the standalone Masimo Rad97 oximeter to the integrated Somnotouch oximeter.Method This was a retrospective study including children aged 2 months – 15 years of age. CRSS were performed using Somnotouch RESP (including Flow, RIPsum, Heart rate and Saturations) alongside standalone pulse oximetry using Masimo Rad97, both Somnotouch RESP and Masimo Rad 97 sleep and wake times were identical. Masimo Rad 97 uses an averaging time of 2-4 seconds compared to 4 seconds for Somnotouch RESP oximeter. Statistical analysis was performed with Graphpad Prims 9 using the Wilcoxon signed rank test .Results A total of 25 studies were included in the analysis (19 males and 6 females). Table 1 shows the comparison between the oxygen saturation data recorded on Somnotouch RESP integrated oximeter and standalone Masimo Rad 97.View this table:Abstract 30 Table 1 A comparison of Masimo Rad97 and Somnotouch oximeters in the assessment of sleep disordered breathing in paediatric patientsConclusion Our study shows there is a significant difference in oxygen saturation data obtained by these two different pulse oximeters; these differences are likely to be due to differences in technical specifications and merit further investigation. Our study therefore highlights the need for specialist physiologist review of oximetry studies.