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Posted by sleepyinvermont on January 30, 2003 at 00:54:04:I would like to conduct a survey of the labs represented in this forum on the scoring criterion used for hypopneas. I know there is a great deal of debate on this topic so I am not questioning the validity of one method over the other, I would just like to know the range of criterion in place across the country. The AASM conducted a survey showing that out of 45 accredited labs there were no 2 like criterion for the scoring of hypopneas. Please speak to these issues:
1. minimum duration of hypopnea in your lab (in seconds or in # of obstructed respirations)
2. minimum % reduction in flow signal (please specify which type of recording device is used, ie thermocouple, pressure transducer, etc and whether or not there are different % reduction required for different detection methods in your lab)
3. is arousal required in addition to desaturation or is either/or sufficient
4. minimum desaturation required in your lab
5. for arousal criterion:
a.) are K complexes scored as arousals without 3 second frequency shifts associated with them
b.) are leg movements resulting from respiratory events scored as arousals in the absence of 3 second frequency shifts
6. does your lab differentiate between obstructive and central hypopneas, if so, please explain
- central hypopneas central hypopneas 03:48 2/08/03 (1)
- Re: central hypopneas RPSGT 10:45 2/09/03 (0)
- Re: Hypopnea scoring criterion... Hmmmm 08:15 1/30/03 (0)
- Re: Hypopnea scoring criterion... RPSGT 01:27 1/30/03 (4)
- Re: Hypopnea scoring criterion... strars 13:57 1/30/03 (3)
- Re: Hypopnea scoring criterion... RPSGT 17:33 1/30/03 (1)
- Re: Hypopnea scoring criterion... stras. 19:22 1/30/03 (0)
- Re: Hypopnea scoring criterion... RPSGT 16:48 1/30/03 (0)
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