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| TREATMENT OPTIONS FOR ADULTS WITH OBSTRUCTIVE SLEEP
APNEA |
There are several
different treatment options for obstructive sleep apnea (OSA). Which option is right for
you depends upon the severity of your sleep apnea (which is determined from a sleep
study), the physical structure of your upper airway, and other aspects of your medical
history. The various options are listed below so that you can discuss them with your
doctor. Only your doctor can tell you which treatment option is best for you.
When thinking about treatment options, remember that with an obstructive apnea, there are
physical blockages or obstructions in the airway during sleep. (In OSA, obstructions occur
during sleep but not during waking hours partly because all muscles, including the muscles
in the airway, relax during sleep.) Obstructions that cause breathing to stop completely
for at least ten seconds are termed apneas. When breathing is substantially reduced for at
least ten seconds, it is a hypopnea. Frequent apneas and hypopneas lead to numerous brief
awakenings during sleep and to sleepiness during waking hours. Preventing apneas and
hypopneas prevents the sleep fragmentation, so treatment reduces the sleepiness. (For
simplicity, here "apneas" include hypopneas as well. All treatment options are
intended to prevent obstructions from occurring, usually by widening the airway. Keep in
mind the precise cause of obstruction is usually difficult to find, and many people have
obstructions in more than one site or place.
Positional Therapy: Apneas tend to be worse when sleeping on the back
(the supine position) as gravity makes it more likely for the tongue to fall back over the
airway and/or for the airway muscles and other tissue (like the tonsils) to collapse and
block the airway. Hence not sleeping on the back may reduce the number of apneas. To avoid
the supine position, some people use homemade remedies, such as putting tennis balls in a
tube sock and pinning the sock to the back of the nightshirt. Others purchase products
such as a tube or cushion designed specifically to prevent supine sleeping. The U.S. Food
and Drug Administration has approved one pillow for snoring and mild sleep apnea; it is
meant to position the neck so the airway is more likely to remain open. Positional alarms
are also on the market: they are intended to prevent supine sleeping by making a noise
when one begins to sleep on the back. However, they may disrupt sleep so much that the
subsequent sleep fragmentation causes a concern.
One study found sleeping on the back but with the back elevated from the waist up may also
reduce the collapsibility of the airway and therefore reduce the apneas. Foam wedges, not
soft pillows that can actually push the chin towards the chest and worsen apnea, should be
used.
Weight Loss: Sleep apnea can be weight-related. Additional fat around the
neck may make the airway narrower, making obstructions more likely to occur. For some
overweight people, especially those with mild cases, losing weight can be an effective
treatment. Or weight loss may reduce the severity of the sleep apnea. However, it may be
hard to lose weight when you have untreated sleep apnea: you may be too tired to exercise
and you may eat to stay awake. Also, it may take some time before the weight loss is
achieved, so in light of the potential consequences of untreated OSA, using another
treatment option while working towards the weight loss goal may be an option. Losing
weight may also improve your health in other ways, but it is always advisable to talk to
your doctor before beginning a weight-loss program.
Remember that sleep apnea occurs in thin people as well; the airway can close during sleep
for a number of reasons, not just excess weight.
Avoiding alcohol and other CNS depressants: Alcohol and medications that
act as central nervous system (CNS) depressantssuch as opiods, sedatives, and muscle
relaxantscan worsen sleep apnea by relaxing the airway muscles further and/or by
reducing the respiratory drive and causing more apneas to occur. Hence avoiding alcohol
and CNS depressants close to bedtime may be helpful. Ask your doctor or pharmacist if
medications you take, prescription or over-the-counter or herbal, affect your sleep apnea.
The prescribed sleep apnea treatment may be adjusted to take into consideration the use of
medications that are CNS depressants.
Oral Appliances: Oral appliances, sometimes called dental appliances, are
intended to treat apnea by keeping the airway open in one of three ways: by pushing the
lower jaw forward (a mandibular advancement device or MAD), by preventing the tongue from
falling back over the airway (a tongue-retaining device), or by combining both mechanisms.
Oral appliances are typically more effective for people with mild sleep apnea and for
non-obese people but can, for some, be effective for moderate and severe sleep apnea. The
most common type of oral appliance, a MAD is often adjustable so that the dentist can move
the jaw further or reduce the advancement as necessary. The goal is to find the most
comfortable and effective position for the patient. On occasion oral appliances may worsen
the apnea. Not all dentists have the necessary knowledge of sleep apnea, so if you wish to
pursue this therapy, ask your sleep doctor to refer you to a dentist who is familiar with
apnea and who works with oral appliances.
Surgery: The intention of surgery is to create a more open airway so
obstructions are less likely to occur. There are several different surgical procedures
with different effectiveness rates, and surgery can also sometimes worsen the apnea.
Continuous Positive Airway Pressure (CPAP): CPAP works by gently blowing
pressurized room air through the airway at a pressure high enough to keep the it open.
This pressurized air acts as a "splint." The pressure is set according to the
patients needs at a level that eliminates apneas and hypopneas that cause awakenings
and sleep fragmentation. Pressure that is too low will not be as effective in eliminating
the apneas and hypopneas. In some cases, a higher-than-necessary pressure can cause
central apneas, where the brain forgets to breathe.
CPAP is the most effective method for treating obstructive sleep apnea, especially if
apneas make the amount of oxygen in your blood drop significantly. It can sometimes be
hard to use, but any complaints about the comfort of the machine or mask can usually be
addressed easily. Talk to your doctor or home care company representative about any
discomfort you may have
Discuss with your doctor all of your options to find the one best for you. Which treatment
you use is not important; being treated properly is.
Note: Combined treatment is best for some patients. For example, you
may be able to use an oral appliance to lower the number of apnea with a CPAP machine at a
lower pressure. Another possibility may be to undergo less extensive surgery, which may
reduce the number of apneas, and then use an oral appliance or a CPAP machine at a lower
pressure.
Because sleep apnea is a medical disorder, by law any device advertised to treat sleep
apnea must have approval from the Food and Drug Administration to treat sleep apnea.
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