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Year : 2015  |  Volume : 12  |  Issue : 1  |  Page : 23-26

Electrocardiographic characteristics of children with obstructive sleep apnea in a tertiary health center in Kano

1 Department of Paediatrics, Aminu Kano Teaching Hospital, Bayero University, Kano, Nigeria
2 Department of Ear, Nose, Throat, Aminu Kano Teaching Hospital, Bayero University, Kano, Nigeria

Correspondence Address:
Aliyu Ibrahim
Department of Paediatrics, Aminu Kano Teaching Hospital, Bayero University, Kano
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0189-7969.148482

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Background: Obstructive sleep apnea in children may be associated with cardiovascular complications and these may be identifiable on the electrocardiogram. Some of those changes seen in adults include ventricular hypertrophy and arrhythmias; however the exact prevalence of these in children is not known. Therefore, this study seeks to characterize the electrocardiographic features in children with obstructive sleep apnea. Materials and Methods: This study reviewed 43 electrocardiograms (ECGs) of children clinically diagnosed with obstructive sleep apnea (OSAS) aged 4-14 years; their ECG parameters were compared with 43 apparently healthy controls matched for age and sex. Results: There were 21 males and 22 females with male to female ratio of 1:1. The PR interval and QRS duration were higher in the obstructive sleep apnea group in the 4-9-year age group except for the QRS and P-wave axes. While in the 10-14-year-old age group lower values in the QRS axis, PR interval, QRS duration, and T-wave axis were recorded in those with obstructive sleep apnea; however, these were not statistically significant. The mean R- and S-waves amplitude in V 4 R, V 2 , V 5 and V 6 though higher in the obstructive sleep apnea group, but were not statistically significant. Premature ventricular complex was identified in only one of the subjects, phasic sinus arrhythmia in three of the subjects, and two ECGs had premature junctional complexes. T-wave inversion involving precordial leads V 4 R to V 3 was most predominant in all the age groups Conclusion: The ECG characteristics of children with OSAS in this study were comparable to previous report in children and the prevalence of arrhythmia was also low.

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