[Analysis of characteristics of heart rate and heart rhythm in children with obstructive sleep apnea-hypopnea syndrome].
OBJECTIVE
To investigate the characteristics of heart rate (HR) and heart rhythm in children with obstructive sleep apnea-hypopnea syndrome (OSAHS).


METHODS
Ninety-five patients underwent overnight PSG for clinically suspected OSAHS. According to the apnea index (AI), the patients were assigned to control group (AI < or = 1/h, SaO2 >92%, n = 27) or OSAHS group (AI > 1/h, SaO2 < 92%, n = 68). The HR and heart rhythm were monitored and compared between the two groups.


RESULTS
The maximum HR during sleep was significantly higher in OSAHS group while the minimum HR was significantly lower during sleep. Bradycardia and tachycardia is a common feature of pediatric OSAHS. There was a significantly higher incidence of tachycardia in OSAHS groups than in the control group.


CONCLUSIONS
These findings suggest that pediatric OSAHS might influence HR and heart rhythm.
Huang
Zhenyun
Z
Department of Otolaryngology, Guangzhou Children's Hospital, Guangzhou, 510120, China.
Liu
Dabo
D
Zhong
Jìanwen
J
Chen
Qian
Q
Zhou
Lifeng
L
Sun
Changzhi
C
Wang
Jie
J
D002648:Child; D002675:Child, Preschool; D004562:Electrocardiography; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D017286:Polysomnography; D020181:Sleep Apnea, Obstructive / Q000503:physiopathology*