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Posted by Cobi on October 05, 1997 at 20:42:35:In Reply to: Re: Central & Snoring posted by Jim Stephens on October 05, 1997 at 19:39:29:
One thing that we know about monitoring sleep is the devices used for looking at airflow and effort are not quantitative. The air flow monitor does not actually monitor airflow but changes in temperature and the effort sensors do not moitor breathing effort just external movement. It has been known for some time that the lack of external movement does not mean no effort which is a component of central sleep apnea. The easy way to determine if someone has central sleep apnea or obstructive is to put them on cpap and if the apneas go away then it is obstructive. If they continue then they are central. Again true central sleep apnea is not that common especially if someone snores. Home monitors are the least accurate for determining central from obstructive. The only way to know for sure if it is central is to monitor the pressure in the esophagus. Which can only be done in a sleep lab at the moment.
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