Flow Limitation due to obesity

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pitman
Posts: 35
Joined: Thu Jan 17, 2019 12:31 pm
Location: near Dallas, Texas

Flow Limitation due to obesity

Post by pitman » Mon Sep 13, 2021 10:04 am

My question is does obesity and sleeping on my back the cause of extreme flow limitations? Thanks for any positive help here.
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Miss Emerita
Posts: 1924
Joined: Sun Nov 04, 2018 8:07 pm

Re: Flow Limitation due to obesity

Post by Miss Emerita » Mon Sep 13, 2021 12:24 pm

Obesity and back-sleeping can both produce obstructive apneas and hypopneas, so I imagine they can contribute to flow limitations as well. But I don't know this for sure.

It's possible for FLs to be caused by nasal congestion, but when congestion isn't an issue, they're usually caused by relaxation of the tissues lining the pharynx. My guess would be that if obesity and back-sleeping are constricting the airway, even a tiny amount of relaxation of those tissues will create significant FL.

Are you able to use expiratory pressure relief (or pressure support or "flex") to help with the FLs?
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