Sleep Apnea Symptoms

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About Sleep Apnea

In sleep apnea, your breathing stops or gets very shallow while you are sleeping. Each pause typically lasts 10-20 seconds or more. These pauses can occur 20 to 30 times or more an hour.

The most common type of sleep apnea is obstructive sleep apnea. During sleep, enough air cannot flow into your lungs through your mouth and nose even though you try to breathe. When this happens, the amount of oxygen in your blood may drop. Normal breaths then start again with a loud snort or choking sound.

Your sleep is not restful because:

These brief episodes of increased airway resistance (and breathing pauses) occur many times
You may have many brief drops in your oxygen levels of the blood.
You move out of deep sleep and into light sleep several times during the night, resulting in poor sleep quality.

When your sleep is upset throughout the night, you can be very sleepy during the day.

People with sleep apnea often have loud snoring. However, not everyone who snores has sleep apnea. Some people with sleep apnea don't know they snore.
Sleep apnea happens more often in people who are overweight, but even thin people can have it.
Most people don't know they have sleep apnea. They don't know that they are having problems breathing while they are sleeping.
A family member and/or bed partner may notice the signs of sleep apnea first.

Untreated sleep apnea can increase the chance of having high blood pressure and even a heart attack or stroke. Untreated sleep apnea can also increase the risk of diabetes and the risk for work-related accidents and driving accidents.

Symptoms

The most common signs of sleep apnea are:

Loud snoring
Choking or gasping during sleep
Fighting sleepiness during the day (even at work or while driving)

Your family members may notice the symptoms before you do. You will likely not otherwise be aware that you have problems breathing while asleep.

Others signs of sleep apnea may include:

Morning headaches
Memory or learning problems
Feeling irritable
Not being able to concentrate on your work.
Mood swings or personality changes, perhaps feeling depressed
Dry throat upon awaking
Frequent urination at night.

Causes

Sleep apnea happens when enough air cannot move into your lungs while you are sleeping.

When you are awake and normally during sleep, your throat muscles keep your throat open and air flows into your lungs. However, in obstructive sleep apnea, the throat briefly collapses, causing pauses in your breathing. With pauses in breathing, your oxygen level in your blood may drop. This happens when:

Your throat muscles and tongue relax more than is normal.
Your tonsils and adenoids are large.
You are overweight. The extra soft tissue in your throat makes it harder to keep the throat area open.
The shape of your head and neck (bony structure) results in somewhat smaller airway size in the mouth and throat area.

With the throat frequently fully or partly blocked during sleep, enough air cannot flow into your lungs, even though efforts to breathe continue. Your breathing may become hard and noisy and may even stop for short periods of time (apneas).

Central apnea is a rare type of sleep apnea that happens when the area of your brain that controls your breathing doesn't send the correct signals to the breathing muscles. There is then no effort to breathe at all for brief periods. Snoring does not typically occur in central apnea.

Risk Factors

It is estimated that more than 12 million Americans have obstructive sleep apnea. More than half the people who have sleep apnea are overweight, and most snore heavily.

Adults most likely to have sleep apnea:

Snore loudly
Are overweight
Have high blood pressure
Have decreased size of the airways in their nose, throat, or mouth. This can be caused by the shape of these structures or by medical conditions causing congestion in these areas, such as hay fever or other allergies.
Have a family history of sleep apnea.

Diagnosis

Some of the ways to help doctors diagnose sleep apnea include:

A medical history that includes asking you and your family questions about how you sleep and how you function during the day
Checking your mouth, nose, and throat for extra or large tissues, for example tonsils, uvula (the tissue that hangs from the middle of the back of the mouth), and soft palate (roof of your mouth in the back of your throat)
A sleep recording of what happens with your breathing.

A sleep recording is a test that is often done in a sleep center or sleep laboratory, which may be part of a hospital. You may stay overnight in the sleep center, although sleep studies are sometimes done in the home. The most common sleep recording used to find out if you have sleep apnea is called a polysomnogram (poly-SOM-no-gram) or PSG. This test records:

Brain activity
Eye movement
Muscle activity
Breathing and heart rate
How much air moves in and out of your lungs while you are sleeping
The percent of oxygen in your blood

Once all your tests are completed, the sleep medicine specialist will review the results and work with you and your family to develop a treatment plan. In some cases, you may also need to see another physician for evaluation of:

Lung problems (pulmonologist)
Problems with the brain or nerves (neurologist)
Heart or blood pressure problems (cardiology)
Ear, nose, or throat problems (ENT)
Psychologist or psychiatrist

Treatment

Treatment is aimed at restoring regular nighttime breathing and relieving symptoms such as very loud snoring and daytime sleepiness.

If you have mild sleep apnea, some changes in daily activities or habits may be all that are needed:

Avoid alcohol, smoking, and medications that make you sleepy. They will make it harder for your throat to stay open while you sleep.
Lose weight if you are overweight. Even a little weight loss can improve your symptoms.
Sleep on your side instead of your back. Sleeping on your side may help keep your throat open.

Reference for Sleep Apnea Article

National Institutes of Health

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