• A M Li, S Hui, E Wong, A Cheung, and T F Fok.
• Department of Paediatrics, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong.
• Hong Kong Med J. 2001 Sep 1; 7 (3): 236-40.

ObjectiveTo determine clinical and baseline polysomnographic data on obstructive sleep apnoea secondary to adenotonsillar hypertrophy in Hong Kong Chinese children.DesignProspective study.SettingUniversity teaching hospital, Hong Kong.ParticipantsFifty children (35 boys and 15 girls) suspected to have obstructive sleep apnoea were recruited between January 1999 and December 1999.Main Outcome MeasuresSymptoms questionnaire, electrocardiogram, chest radiograph, and full-night polysomnography.ResultsAll patients had symptoms suggestive of obstructive sleep apnoea. None were found to have clinical evidence of cor pulmonale. Forty-five (90%) of 50 children had obstructive sleep apnoea with a respiratory disturbance index of greater than five. Central and mixed apnoeas were rare. Tonsil size did not correlate with the severity of obstructive sleep apnoea.ConclusionSymptoms and signs suggestive of obstructive sleep apnoea can lead to a high detection rate and confirmation of obstructive sleep apnoea by polysomnography.

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