Obstructive sleep apnoea is a condition where there is recurrent ‘blockage’ of the upper airway during sleep, leading to reduced airflow to the lungs and sleep disruption.
Snoring is an important symptom of obstructive sleep apnoea, but not all children with snoring will have obstructive sleep apnoea. Children with habitual snoring but no evidence of compromised breathing and sleep disruption have ‘primary snoring’.
It is estimated that overall, three to 12 percent of children have habitual snoring, and one to three percent of children have snoring with obstructive sleep apnoea. Boys and girls are equally affected. The peak age is between four to seven years of age, usually in children with enlarged tonsils and/or adenoids. There is a second peak seen in older children above eight years old who tend to be obese.
Some of the symptoms suggestive of obstructive sleep apnoea include:
Some of the complications of untreated significant obstructive sleep apnoea include:
The two most important causes of obstructive sleep apnoea in children are enlarged tonsils and/or adenoids, and obesity.
Other children at risk for obstructive sleep apnoea include children with neuromuscular (central nervous system and muscle) disorders, abnormalities in the jaw and/or face, Trisomy 21 (Down syndrome), and those with a family history of sleep and breathing disorders.
A clinical history and physical examination are not sufficiently reliable to differentiate primary snoring from obstructive sleep apnoea. If the doctor suspects that your child has obstructive sleep apnoea, he will refer your child to a paediatric sleep specialist for review, and for an overnight polysomnography (sleep study).
Your child will be admitted overnight to a single room in a sleep laboratory, where his/her sleep and breathing will be monitored and recorded continuously during sleep.
There will be sensors placed on your child’s head and body, and elastic bands placed around his/her chest and abdomen, connected by wires to a computer system that records the data.
This is not a painful procedure, and most children will be able to fall asleep, after they get used to the set-up. A caregiver is allowed to stay overnight with the child during the study.
The treatment of obstructive sleep apnoea in children depends on the underlying cause.
In children with enlarged tonsils and/or adenoids, surgery would be recommended.
For more information, please refer to our booklet: ‘Up Close: Get the answers to common Ear, Nose and Throat Conditions’. For more details on surgical treatment, including adenotonsillectomy, please refer to the sections: Common ENT conditions among Children – “Snoring in children”, and “Tonsils and adenoids”.
In children who are obese, weight loss measures such as healthy eating and regular exercise are encouraged.
They may also be referred to paediatric specialists for weight management programmes and to screen for conditions such as diabetes, hypertension and hyperlipidaemia.
In some children where surgery is not an option, or if they continue to have significant residual obstructive sleep apnoea after surgery, they may be recommended the use of Continuous Positive Airway Pressure (CPAP) during sleep.
The CPAP set-up consists of a face mask connected by a tubing to a machine that generates and delivers a positive pressure.
This pressure helps to keep the upper airway of your child open during sleep. Children who are treated with CPAP will need to be managed by a paediatric sleep specialist, who will recommend regular follow-up checks and sleep studies.
Besides the treatments mentioned above, a small group of children may benefit from an orthodontic assessment and other procedures or surgeries for their sleep apnoea.
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