Respiratory effort related arousal vs unclassified apnea

General Discussion on any topic relating to CPAP and/or Sleep Apnea.
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Sclark08
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Joined: Mon Feb 18, 2013 10:13 am

Respiratory effort related arousal vs unclassified apnea

Post by Sclark08 » Thu Aug 21, 2014 3:28 pm

What is the difference?

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Pugsy
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Re: Respiratory effort related arousal vs unclassified apnea

Post by Pugsy » Thu Aug 21, 2014 7:46 pm

Respiratory Event Related Arousal... a sequence of breaths characterized by increasing respiratory effort leading to an arousal from sleep, but which does not meet criteria for an apnea or hypopnea.”

RERA Detection in the Respironics System One data..Respiratory effort-related arousal..defined as an arousal from sleep that follows a 10 second or longer sequence of breaths that are characterized by increasing respiratory effort, but which does not meet criteria for an apenea or hypopnea. Snoring, though usually associated with this condition need not be present. The RERA algorithm monitors for a sequence of breaths that exhibit both a subtle reduction in airflow and progressive flow limitation. If this breath sequence is terminated by a sudden increase in airflow along with the absence of flow limitation, and the event does not meet the conditions for an apnea or hypopnea, a RERA is indicated.

An unclassified apnea is just an apnea that the machine can't tell if it is central or obstructive or what but does meet the criteria for apnea in terms of flow reduction and duration. About the only time I ever saw an unclassified apnea was during a period of large leak when the machine knew something was going on but the leak made it difficult to figure out exactly what it was.

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