Hypopnea detection???
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Hypopnea detection???


Posted by Help! on August 25, 2002 at 19:15:27:

Hypopnea: 4% desat, 30% decrease in airflow, may or may not have an arousal.
UAR: Narrowing of the airway, causing an arousal, less than 4% desat.
Is this right?
Also, does anyone agree that the 30% reduction of airflow in a Hypopnea with a 4% desat may not necessarily "look" quite like a 30% reduction of airflow in the waveform, because ther thermocouple is not an exact science? I mean, if you see decreased airflow (but not quite 30%), increased work of breathing at the end, with or without and arousal, and a 4% desat, is it not a Hypopnea? Does anyone else also look at the chest effort for a reduction in airflow there to qualify a Hypopnea? I took a course with Glen Roldan and he said a good tech looks at the chest effort to identify discrete Hypopneas.

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