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AHIs way up after years of successful use - stephenu712 - 06-30-2024
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Any help appreciated - after years of well controlled AHIs (1.0-2.0 with very few aberrations, which always seemed to be solved with a replacement hose or mask), in the last week I have had several nights of elevated AHIs, along with fitful/disrupted sleep. I have replaced hose and mask to no effect. Oscar charts from a few days attached. The data from 062924 is a real mess, because of me getting up and down a number of times to switch out hoses/masks, so not sure how insightful that is. Thank you for any insights/recommendations!
RE: AHIs way up after years of successful use - Sleeprider - 06-30-2024
You have very good therapy until you don't, and the clustering of obstructive events is the clue that you're dealing with positional apnea. https://www.apneaboard.com/wiki/index.php?title=Optimizing_therapy#Positional_Apnea
Read the wiki article and consider how it may apply, and we can go into more details. You are using a Vauto which is a great device, yet you still have very high flow limits, even with PS at 7.0 cm. So this is not a problem with settings, it is a problem with the position(s) you sleep in or number of pillows or inclined sleeping. Your results with CPAP were actually better and the EPAP min at 4.0 is clearly a problem. You should be able to resolve this with a little detective work. I might increase EPAP min to 8.0, PS 5.0 and IPAP max 18.0.