0892 NECK CIRCUMFERENCE-HEIGHT RATIO AS A PREDICTOR OF OBSTRUCTIVE SLEEP APNEA IN THAI CHILDREN

Abstract Introduction: Prevalence of obesity in Thai children has been progressively increased. Neck circumference-height ratio (NHR) is a measure to assess fat distribution and important predictor of metabolic syndrome in children. The goal of our study is to determine if NHR predicts OSA in Thai children. Methods: For this retrospective study, Polysomnographic and anthropometric data from 98 children (69 Male and 29 Female) aged 5–15 years presenting between September 2013 to August 2016 was obtained. Children with genetic syndromes, severe neurological disorders, craniofacial abnormalities, tracheostomy, post adenotonsilectomy, in-hospital polysomnogram(PSG) or sleep efficiency < 80% were excluded. Data was analyzed using Spearman ‘s rho correlation, Chi square and ANOVA test. Results: BMI-Z score, arousal index and REM RDI were statistically correlated with NHR (r=0.588, p< 0.001). NHR, BMI-Z score and arousal index were correlated with OSA level statistically (r=0.266, p=0.008 and r=0.621, p 8 years of age with sensitivity of 78.3% and specificity of 62%. For NHR≥ 0.22, the odd ratios of OAHI ≥ 5 in all children and children more than 8 years of age were 1.67 and 5.85 respectively. Conclusion: NHR is a simple tool to predict moderate to severe OSA in Thai children especially in children more than 8 years of age. NHR ≥ 0.22 can be utilized to triage pediatric patients for PSG. Support (If Any):