[Polysomnography analysis in children].
OBJECTIVE: To analyze the characteristics of Polysomnography (PSG) in children with obstructive sleep apnea-hypopnea syndrome(OSAHS). METHOD: Forty-five children with sleep breathing disorder were studied with 32 guide PSG and analyzed by Polysmith. PSG results of OSAHS children were compared with primary snore group. RESULT: The mean age of OSAHS children was(7.3 +/- 3.8) years and the mean body weight was (40.1 +/- 19.7) kg. The mean value of NREM stage 1, stage 2, stage 3+4 and REM stage was(21.4 +/- 13.2)%, (43.1 +/- 13.7)%, (26.1 +/- 14.0) % and (9.4 +/- 6.0) % respectively. The sleep structure between OSAHS group and primary snore group was not significant (P > 0.05). The mean value of AHI of OSAHS children was(12.8 +/- 8.1) h. AI was (6.7 +/-6.6)h, HI was(6.1 +/- 5.1)h. CONCLUSION: The sleep structure of children is prefect and mild effected by OSAHS.