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Inspiratory Flow Limitation
#1
Here is a very interesting paper on flow limitation that many of us (including me) have:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4688581/


Sleep Sci. 2015 Nov;8(3):134-42. doi: 10.1016/j.slsci.2015.08.003. Epub 2015 Sep 3.
The role of flow limitation as an important diagnostic tool and clinical finding in mild sleep-disordered breathing.
Arora N1, Meskill G1, Guilleminault C1.


Walt
Walter W. Olson, Ph.D., P.E.
Professor Emeritus
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#2
Want to see flow limitation? This is one of the more severe examples I have see posted on the board. This also is accompanied by a remarkable inhale:exhale ration of nearly 3:1. The person who posted this has gone on to bilevel, and I have not seen any followup from that change.

[Image: attachment.php?aid=2011]
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#3
(01-26-2016, 11:37 AM)Sleeprider Wrote: Want to see flow limitation? This is one of the more severe examples I have see posted on the board. This also is accompanied by a remarkable inhale:exhale ration of nearly 3:1. The person who posted this has gone on to bilevel, and I have not seen any followup from that change

There sure are a lot oh things going on here, and not all of it is flow limitation although that certainly is present. I am surprised the AHI is so low! There clearly will be a lot of RERA's so the RDI might be more pertinent here.

I would be interested to know BIPAP helped!

Walt
Walter W. Olson, Ph.D., P.E.
Professor Emeritus
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#4
He posted at the beginning of January he at returned the APAP and was scheduled for a bilevel titration. Has not updated since. The AHI was okay, but the RERA was pretty intolerable, and he had very high H in previous submittals. Anytime we see restricted inspiratory patterns like that, it usually helps to get on a machine with higher low EPAP and good pressure support to support better ventilation.
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