Analysis of Polysomnography Obstructive Sleep Apnea Hypopnea Syndrome in Children

Objective To investigate the diagnostic value of polysomnography(PSG) in children obstructive sleep apnea hypopnea syndrome(OSAHS) in children.Methods 52 patients diagnosed as having OSAHS were enrolled in our study.According to the apnea-hypopnea index(AHI),they were divided into mild group,moderate group and severe group,and all underwent polysomnography.The average SaO2,lowest SaO2,≥3% ODI,time of SaO2 ≤92% and BMI were observed,and the relationship between these indicators and AHI were analysed.Results The times of SaO2 ≤92% and ≥3%ODI were compared,the data were distributed as mild group moderate group severe group with significant difference(P0.01);There were no statistical difference in average SaO2,lowest SaO2 and BMI among the 3 groups(P0.05).In this study,AHI and ≥ 3% ODI of children were positively correlated(r=0.652,P=0.00),AHI and average SaO2,lowest SaO2,time of SaO2≤92% and BMI children was not correlated(r=-0.297,P=0.60;r=-0.297,P=0.60;r=0.132,P=0.25;r=0.105,P=0.28,respectively).Conclusion Compared with other ventilation indexes,ODI is more reliable in diagnosing the severity of OSAHS in children.