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Sleep apnea means that breathing stops for short periods during sleep. When you stop breathing or have reduced airflow into your lungs during sleep, you don't sleep well and you can be very tired during the day. The oxygen levels in your blood may go down, and carbon dioxide levels go up. It may lead to other problems, such as high blood pressure and heart disease.
Sleep apnea can range from mild to severe, based on how often breathing stops during sleep. Breathing may stop as few as 5 times an hour (mild apnea) to 30 or more times an hour (severe apnea).
Obstructive sleep apnea is the most common type. This most often occurs because your airways are blocked or partly blocked. Central sleep apnea is less common. It happens when the brain has trouble controlling breathing. Some people have both types. That's called mixed sleep apnea.
There are symptoms of sleep apnea that you may notice and symptoms that others may notice when you're asleep.
Symptoms you may notice include:
Your bed partner may notice that you:
Your doctor will probably do a physical examination and ask about your past health. The doctor may also ask you or your bed partner about your snoring and sleep behaviour and how tired you feel during the day.
Your doctor may suggest a sleep study. Sleep studies are a series of tests that look at what happens to the body during sleep. They check for how often you stop breathing or have too little air flowing into your lungs during sleep. They also find out how much oxygen you have in your blood during sleep.
A sleep study may take place in your home. Or it might take place at a sleep centre, where you will spend the night.
If your sleep apnea doesn't improve with treatment, you may have more tests to find out what's causing it.
You may be able to help treat sleep apnea by making some lifestyle changes. You could try to lose weight, sleep on your side, and avoid alcohol and medicines like sedatives before bed. Moderate to severe sleep apnea is often treated with machines that deliver air through a mask to help keep your airways open. The most studied treatments include:
You can also try oral breathing devices or nasal devices. If your tonsils or other tissues are blocking your airway, your doctor may suggest surgery to open the airway.
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Adaptation Date: 5/4/2021
Adapted By: Alberta Health Services
Adaptation Reviewed By: Alberta Health Services
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