Even if he seems miles away from any sleep disruption, with his little fists clenched, the sounds that come out of his throat could hide a respiratory problem. Frequent and noisy snoring could, indeed, be a symptom of sleep apnea.
But don’t be alarmed as only 2% of children who snore suffer from sleep apnea.
In Québec, about 25 % of children aged 3 to 7 years old snore at least occasionally and 10% do it often.
Let’s first dissect the origins and causes of snoring.
What is snoring?
Snoring occurs when the muscles located at the back of the throat relax while you sleep (the tongue falls at the back) and shrink the airways. The air circulating is this narrow passageway makes the soft palate and uvula vibrate because they are the most mobile structures in that area and that is how the snoring sound is made.
But why don’t we all snore since the same muscle relaxation occurs for everyone? Some factors predispose to a reduced airflow to the lungs.
The causes of snoring
- Decreased muscle tone caused by sedatives or alcohol
- Bigger tonsils and adenoids (adenoids are glands that look like tonsils located behind the nose)
- Longer soft palate or uvula (a little fleshy growth that hangs where the throat begins and controls the airflow when we talk)
- Obstruction caused by nasal polyps (benign growths that stick to the mucosa), a deviated septum, allergies or a cold.
- Being overweight which makes the neck tissues bulkier for breathing
- Swollen tissues caused by cigarette consumption
- Hypothyroidism
Sleep apnea
Between 0.7 % and 10.3 % of children are affected by sleep related breathing disorders. Many of those problems go unnoticed and will remain untreated. Sleep apnea is a respiratory problem that should be taken seriously.
When the airway is completely blocked, the air does not flow and breathing is interrupted briefly many times during the night and with it, snoring stops for brief periods. The snorer resumes purring when his respiratory tracts reopen loudly as he awakens from a deep sleep.
Sleep apnea happens in three forms but obstructive sleep apnea is the most common and it occurs when the respiratory tracts are too narrow and block the passage of air. It is estimated that 40% of snoring children may present symptoms of obstructive sleep apnea (OSA).
Your child could suffer from sleep apnea or of another sleep disorder if he shows one or many of the following symptoms:
- He snores
- He pauses in breathing while sleeping (even one pause per hour is considered abnormal)
- He seems very tired during the day, even after a full night of sleep
- He has problems at school
You should ask your doctor to refer you to a sleep specialist.
In addition, sleep apnea is very frequent in obese or overweight adults, especially in men.
