 Obstructive versus Central Apnea
About 10 years ago, seemingly unrelated to any disease episode, I awoke one night with the out-of-breath sensation. I rolled over and was able to sleep but only very lightly. After a few nights of the same thing, I went to my doctor at an HMO. He referred me to a pulmonologist who listened to me and prescribed a c-pap. Besides being uncomfortable and difficult to sleep with anyways, it still did not stop me from stopping breathing. They did a sleep study and the diagnosis was still Obstructive Sleep Apnea. He escalated to a pulsating c-pap that would take over the breathing cycles. I still woke up out-of-breath.
All along, I had been unaware of any part of my air passages that was closing on or restricting the airflow. At its worse, I would be drowsing and know that it was happening and know that there was no restriction, because I could take over conciously and start breathing. Also, even if I was fully awake but started to concentrate deeply on something, I would stop breathing.
I asked the pulmonologist, why not central apnea, why insist that it is OSA. He said, and I must admit, snottily, that he could show me the results of the sleep test. There were over 400 moments of apnea in 6 hours occurring in all phases of my sleep. But, there was a column that was coded, I think it was even coded O and C, and I asked about that. He hesitated, and said that was Obstructive versus Central. I insisted on counting them and there were over 300 Centrals and the rest were obstructive. I guess they tell by comparing a moment of a dip in oxygen or rise in CO2 with noise or some characteristic of the air flow.
So I asked again about a cure for Central Apnea. He got upset and said, do I want my brain operated on!
Since I wasn't dying, I just told my GP what happened and said I can't live with the c-pap and I don't want the pulmonologist anywhere near me with a knife. The condition comes and goes.
I am telling all this to say there is Apnea that is not Obstructive, but Central, and it is harder to diagnose and cure. It is probably a lot more expensive for an HMO to handle, too, like brain surgery.
I am 65 and still alive.
Don
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