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→Algorithm differences
===Algorithm differences===
'''Bi-level''' is the application of more than 1 pressure level during different breathing stages. Below is Oscar's representation of the changing pressure during bi-level therapy whilst using Softpap2 at a CPAP pressure of 12cmH2o. This offers The difference between the 2 pressures of EPAP (exhalation positive airway pressure) and IPAP (inhalation positive airway pressure) is termed pressure support, abreviated normally to PS. The example below shows a PS or pressure support of 3cmH2o. This is the maximum PS achievable with the '''Prisma Smart''' and delivers the same support as Resmeds EPR 3, although as you will see, the differing air delivery of the two devices , affects how this pressure support affects shapes your breathing.
[[File:Softpap2_example.png|thumb|center|1000px]]
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