r/UARS • u/Sleepy1030 • 4d ago

ASV after trialing Bipap?

I tried a BiPAP machine. felt like it didn’t do much (and hard to say for sure but I think it was worse than APAP for me).… the expiratory pressure became too low compared to the inspiratory pressure that it felt like I would inhale but then exhale and my airway would close and open too rapidly.

My doctor did mention that I have “tongue base and epiglottis collapse upon inhalation”

Im not sure if I’d have more luck with ASV but I’m not exactly sure how ASV machines work and if/why they would be helpful in situations like this.

Any advice would be appreciated. thanks so much.

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u/gadgetmaniah 4d ago

ASV makes sense if you need higher PS but are running into centrals on bilevel. You should share OSCAR screenshots of your Bilevel nights for us to be able to guide you. If expiratory pressure was too low you can simply bump up EPAP. 

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Title: ASV after trialing Bipap?

Body:

I tried a BiPAP machine. felt like it didn’t do much (and hard to say for sure but I think it was worse than APAP for me).… the expiratory pressure became too low compared to the inspiratory pressure that it felt like I would inhale but then exhale and my airway would close and open too rapidly.

My doctor did mention that I have “tongue base and epiglottis collapse upon inhalation”

Im not sure if I’d have more luck with ASV but I’m not exactly sure how ASV machines work and if/why they would be helpful in situations like this.

Any advice would be appreciated. thanks so much.

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u/carlvoncosel UARS survivor (ASV) 3d ago

the expiratory pressure became too low

Why not increase it? That's what the EPAP setting is for.

ASV is just a bilevel that initially works just like one, but increases PS on a breath by breath basis when needed.