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→PrismaLine Bi-Level Modes & Machines
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[[File:Bi SoftPAP.png|thumb|center|750px]]
*'''BiSoft modes''' apply a gradual ramp upto a pressure level known as '''EEPAP''' (end expiratory positive airway pressure). This end of expiration pressure is applied at the most critical time for airway collapse and provides important airway stenting, in preparation for inspiration. It can limit central apnea, round out exhalation and permit generally lower pressures.
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*These '''BiSoft modes''' incrementally apply a gradual ramp upto a pressure level known as '''EEPAP''' (end expiratory positive airway pressure). This end of expiration pressure is applied at the most critical time for airway collapse and provides important airway stenting, in preparation for inspiration. It can limit central apnea, round out exhalation and permit generally lower pressures. You can use each of these Bi-soft levels to apply the pressure rise and increased flow at the weakness in your breathing shapes. If you see good exhalation but late flow limitation during inspiration, you may select level 0 to apply all pressure support to that period in your breathing. As some instability become obvious at very late exhalation into early/mid inspiration, you may apply level 1 or 2. Level 4 (Tri-level) can be used to apply most pressure during end of expiration with only minimal pressure support for those with good inspiration.
*Lowenstein recommends setup in a Bi-Level stage first, then apply '''Tri-Level''' to use their predetermined comfort 'pressure reduction'. Lowenstein recommend return to Bi-level for further adjustment.This is due to the machine adding and subtracting pressure from IPAP and EPAP with an unseen algorithm at certain pressures, which can confuse settings.
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