Diagnosis Values Of Heart Rate Variability In Children With Obstructive Sleep Apnea Syndrome

Objective: To explore the characteristics of heart rate variability and its diagnosis value in children with OSAS;to search for a more convenient,more cheap,more exact and esier to spread technique to diagnosis OSAS in children. Method: we analyed 44 children with OSAS (age7.5±3.5yr;36 males and 8 females) ,44 children with primary snoring(age7.9±3.3yr; 32 males and 12 females) and 18 control subjects(age7.0±4.1yr;14 males and 4 females),each child being monitored with Holter at least 22 hourses and PSG for 7 hourses at night.The heart rate variability parameters of the 3 groups were compared. Rescult: (1)compared with the control subjects,there was no significant difference (p>0.05) in the age,male ratio,BMI,obesity snoring ratio.(2)parameters of heart rate variability: SDNN at night 106.14 + 44.86,103.46±42.26,103.39±21.33; 24hSDNN: 1119.41+30.42,125.59 + 36.75, 122.22 ±15.99; A [24h/night]SDNN: 18.73 ±17.65, 22.14 ± 29.35, 18.33± 16.71. 24hHRVtriangle index(TI): 468.91 ±124.65, 479.52 ± 130.58, 496.56±74.34; TI at night: 400.18± 157.80, 383.24± 139.57, 430.33+ 77.52;A[24h/night] TI: 68.73±82.92, 91.91 + 105.84, 66.22± 82.03; RMSSD: 24hRMSSD 80.23±24.75, 21.23zbll.18, 21.56±7.67; RMSSD at night: 94.59±42.19, 84.59±43.5, 75.44±21.82;A[24h/night] RMSSD: -14.36±29.45, -o.227±37.46, -4+14.12. PNN50: 24hPNN50 24.64±11.66,21.23±11.18,21.56±7.67;PNN50atnigh: 35.55±17.28, 32.86+17.69, 32.56+12.42; A[24h/night]: PNN50: -10.91 ± 10.95, -11.14 + 8.75,-11 ±5.92.There was not statistically significant difference in the parameters among the three groups (p>0.05). Conclusion: we do not found the likelihood of having a diagnosis of OSAS when HRV have been prescribed.PSG is still a parimary method for confirmed diagnosis of OSAS in children.