Hello Guest, Welcome to Apnea Board !
As a guest, you are limited to certain areas of the board and there are some features you can't use.
To post a message, you must create a free account using a valid email address.

or Create an Account


New Posts   Today's Posts

Making sense of significantly different leak rates
#1
Making sense of significantly different leak rates
In my personal experience with BIPAP, a night with a very low AHI and low pressures & flow limitations tends to correlate with a very low leak rate.

Yet, sometimes I see a glaring exception which I am trying to understand. Two recent nights provide an example of such a contrast. Both had wonderful (and atypical for me) AHIs below 1.0 and low average pressures (and 0.0 flow limitations) yet significantly different Median and 95% leak rates:

Sep.29:  PRESSURE=16.60  AHI=0.83  FLOW LIMITATIONS=0.0   MEDIAN LEAK RATE=0.0,     95%LEAK RATE=0.0
Oct.01:  PRESSURE=16.48  AHI=0.44  FLOW LIMITATIONS=0.0   MEDIAN LEAK RATE=9.6,     95% LEAK RATE=15.60

(Yes, I was using the same hose and nasal-pillows on both nights.)

I care about such different leak rates because of the impact on airway dryness.  NOTE: I am using an elaborate combination of tennis bands, chin-lift-strap, velcro straps, cervical collar, and Balaclava full face hood in order to prevent mouth leaks.  (See attached photo.  Despite the appearance, I am not an ISIS terrorist about to perform an execution.)

Can you help me understand scenarios which can explain such a big difference under similar therapeutic conditions?


Attached Files Thumbnail(s)
           
Post Reply Post Reply


Possibly Related Threads...
Thread Author Replies Views Last Post
  Air Sense 10 AutoSet for Her replaced by Air Sense 11 jaw2004 4 77 5 hours ago
Last Post: BobinHI
  [Equipment] ResMed making noise at altitude GManCPAP2019 1 72 Yesterday, 12:52 PM
Last Post: ArcherNeedsSleep
Thumbsdown Annoying air venting (not mask leak) from F20 air touch Little Olive 5 147 06-23-2024, 09:29 AM
Last Post: PeaceLoveAndPizza
  Request for help making sense of my CA numbers and guiding further treatment jostlereptile 18 472 06-22-2024, 03:31 PM
Last Post: jostlereptile
  Mask on/off numbers make no sense bzmie3 9 3,191 06-22-2024, 07:34 AM
Last Post: hevy6
  Device air leak, not mask!!! xaid 1 122 06-18-2024, 01:06 PM
Last Post: Dormeo
  New User Trying to make sense of this data gacman47 3 156 06-11-2024, 09:35 PM
Last Post: Melman


New Posts   Today's Posts


About Apnea Board

Apnea Board is an educational web site designed to empower Sleep Apnea patients.