Most machines do not record Central Hypopnea, and I have no info on ASV treating Central Hypopnea.
Possibly another way, though there are very few clinics doing this.
Enhanced Expiratory Rebreathing Space (EERS)
Enhanced Expiratory Rebreathing Space (EERS) may be a solution for individuals that experience therapy onset central apnea with CPAP or bilevel therapy. The rebreathing space prevents all of the exhaled air from being vented through the CPAP mask. This increases the amount of carbon dioxide that the user breathes in in the next breath. CPAP and Bilevel therapy flush most of the user's expired air out of the mask. For some sensitive individuals this decreases the amount of carbon dioxide which leads to the appearance of central apnea. Many of these individuals find that CPAP/BPAP therapy is uncomfortable due to the central apnea and hypopnea that they experience. EERS can ensure a volume of expired air is available for rebreathing, and this can prevent these therapy onset central apnea.
Obviously no guarantees on this.
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