Doctor, do I have to wear this CPAP for the rest of my life?
Yes, you may just have to wear that CPAP for the rest of your
life. Those are hard words to say and even harder words to hear.
The fact is the more mild your sleep apnea and the less pressure
you need to open your airway, the better chances you have of
getting off of CPAP. It may take some life style changes or even
undergoing surgery-- but it has been done. The problem is that
not every one has mild sleep apnea. Allot of us take high CPAP
pressures to hold open our airways.
Let me try to explain why everyone needs a different CPAP
pressure to open their airway. Think of your airway as a
balloon. Some balloons are hard to inflate and hurt your cheeks,
others will inflate slightly easier. An airway that is
obstructed may not even begin to inflate until you get into the
upper pressure ranges. Your weight and the severity of your
obstructive sleep apnea (OSA) are the two main factors that play
a large part in how high of a pressure you may require for your
CPAP machine. The pressure acts like a splint or cushion of air
that holds open what gravity is trying to close. Yes gravity
plays a large role in obstructing your airway. That is why most
OSA patients have learned to sleep on their side rather than
their back. Because of this, some mild OSA patients can be
treated with positional therapy. This position allows the airway
to stay open as long as they do not lay on their back. The more
weight you carry the harder it is to keep your airway from
collapsing under your own body weight because gravity is pulling
down on it.
There are a number of reasons why you may have OSA. For example,
when lying on your back gravity will pull your tongue back and
obstruct your airway. Another contributor to OSA is the excess
stomach weight that is pushing up against your diaphragm. Again
it can be relieved by lying on your side. Gravity now will
prevent it from pulling into your diaphragm. Instead the stomach
lies to the side along with your tongue. Genetics also plays a
role by the way it has shaped your jaw, the size of the airway
opening, the size of your tonsils and adenoids. These are just a
few of the reasons why a patient will be predisposed to having
OSA.
As you can see it may not always be just one factor that will
cause your sleep apnea. Weight reduction alone may only reduce
your risk of OSA. Most people who have moderate to severe OSA
have more them one problem going on. That is why correcting one
problem through surgery or weight loss may lower the pressure
you need, but not always fix the entire problem all together.
This is not to say that for most moderate to severe apnea
patients losing weight will not allow you to discontinue CPAP
therapy. It may just get you into the realm of 'Very Mild' which
can then be then treated by alternative measures such as the
positional therapy, surgery or possibly even a dental appliance.
Each person has there own combination of problems which they
would need to discuss with there doctor.
The first thing you need to do to feel better is get on CPAP.
Then when you feel better try exercise with a weight loss
program, then go from there. There are a lucky few who everyone
hears about who are able correct one problem and manage to
reduce their pressure or eliminate CPAP altogether.
Unfortunately most people don't fall into that category. My
advice to you is that if you can correct something through
surgery or weight loss, go back for a repeat sleep study to
determine if you truly are with out OSA. You may think you're
cured only to find that you may still need CPAP therapy but at a
lower pressure.