"please keep me updated about oximeters "
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In laymans terms someone explain how the machine knows I have had an apnea.
The green in this post shows I am still having lots of them. How does my machine know that?
http://www.sleepguide.com/forum/topics/hello-newbie-is-all-confused
http://www.sleepguide.com/forum/topics/hello-newbie-is-all-confused
Views: 88
Replies to This Discussion
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Permalink Reply by RockRpsgt on
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Duane I agree with you for the most part. A straight pressure that has been titrated in a lab is or should be the best way for a pt to go. the truth of the matter is that fully data capable auto machines are here to stay. They are not going to go away just because you,me, or the doctors we work for don't agree with them. We can either accept them and try to help or get pushed out of the way. You yourself have said that the parameters on these machines need to be tightened in order for them to work.
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Permalink Reply by Duane McDade on
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I do agree but they're just not good enough , yet. If the Doctor would give me a couple of weeks off, and resmed or resperonics a couple of hundred thousand dollars ....oh well.
Rock Hinkle said:Duane I agree with you for the most part. A straight pressure that has been titrated in a lab is or should be the best way for a pt to go. the truth of the matter is that fully data capable auto machines are here to stay. They are not going to go away just because you,me, or the doctors we work for don't agree with them. We can either accept them and try to help or get pushed out of the way. You yourself have said that the parameters on these machines need to be tightened in order for them to work.
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Nice post Mollete I always enjoy reading Resmed's fact sheets. Although flow limitation comes in many different shapes and sizes. Sometimes it can be just a slight reduction in respiratory effort. the companies may try to make the machines differentiate between OSA and CSA, but I think they do a poor job at it. Like I have said before you can post corp fact sheet after corp fact sheet and just because they say they do something does not make it so. The machines do not measure enough parameters to accurately measure CSA. They might guess and sometimes be right, but a guess is just a guess.
Mollete said:jnk said:
"Terminology often has technical use and layman use. And since most home machines do not even attempt to differentiate the obstructive event from the central, then in the context of home machines and their scoring, the concept that a hypopnea is a kind of flow limitation may be the most salient point."
I don't believe it's excusable to use incorrect terminology under the umbrella of "Well, it's okay, cause we're only talking Layman here" lest the crop of shrooms will remain a crop of shrooms. The overall concept is more appropriately termed "amplitude reduction" with the subsets of normal ("bell-shaped") and the Seven Sisters of Flow Limitation. This is critical to the discussion in that most machines do differentiate this. For instance, the ResMed hypopnea response is specifically designed to address flow limitation hypopneas, but not normals:
http://www.resmed.com/au/clinicians/compliance_and_efficacy/autoset...
Lastly, it would be far more accurate to say, "Most machines attempt to differentiate obstructive from central". This is seen in the NR of Respironics, A10 and flow limitation differentiation of ResMed, FOT of Weinmann and ballistocardiography of PB/Sandman.
mollete
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The compumedics auto scoring system is terrible. I know our lab scores all of our test manually. As I said before I do not know of any labs that use the auto scoring features. They are to inaccurate. I have tried them on several systems. they do not work.
j n k said:"Automated scoring (ie, autoscoring) programs assist technologists in scoring records more quickly. . . . The programs are designed only to assist in scoring . . . A salesperson's pitch often leaves the impression that an autoscoring program is capable of scoring and analyzing data without human involvement. In actuality, the accuracy of autoscoring programs is less than that of manual scoring. . . . Autoscoring programs agreed with manual scoring 70% to 72% of the time. . . . Although autoscoring programs can aid a technologist in scoring faster, their lower reliability increases the likelihood of improper diagnosis and treatment. To avoid this, scientists strongly recommend that an autoscored PSG be reviewed manually."
http://www.sleepreviewmag.com/issues/articles/2008-06_04.asp
Rock Hinkle said:I do not know of any labs that use the auto scoring feature.
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My experience has been that this community contains people of all different levels of learning on these subjects who all want to be helpful and learn from one another. I am particularly impressed by all the professionals here who put up with the discussions that laymen like myself participate in. And I have learned much from the experiences and observations of the brand new, too. Sleepguide has managed to keep a nice, pleasant feel that way. Thanks to the low-key "mods."
I think that I have learned way more from this site than I have taught anyone here. This site has helped me to grow as a tech. Thanks for bantering back in forth you 2. It has been a great discussion. Both of you had some great points. i also hope you stick around Mollete.
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I have been thinking about this post alot lately. I have come to the conclusion that all apneac events are indeed a type of flow limitation. We rate all events either by loss of respiratory effort or lack of o2. Either way you want to measure it is flow limitation that we are measuring. Just my thoughts.
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