title: [Analysis of characteristics of heart rate and heart rhythm in children with obstructive sleep apnea-hypopnea syndrome].
abstract: 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.
authors.affiliation: Department of Otolaryngology, Guangzhou Children's Hospital, Guangzhou, 510120, China.
authors.forename: Zhenyun
authors.initials: Z
authors.lastname: Huang
authors.forename: Dabo
authors.initials: D
authors.lastname: Liu
authors.forename: Jìanwen
authors.initials: J
authors.lastname: Zhong
authors.forename: Qian
authors.initials: Q
authors.lastname: Chen
authors.forename: Lifeng
authors.initials: L
authors.lastname: Zhou
authors.forename: Changzhi
authors.initials: C
authors.lastname: Sun
authors.forename: Jie
authors.initials: J
authors.lastname: Wang
mesh_terms: D002648:Child; D002675:Child, Preschool; D004562:Electrocardiography; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D017286:Polysomnography; D020181:Sleep Apnea, Obstructive / Q000503:physiopathology*