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PRS1 Auto BIPAP, Starting Prisma ST machine
#31
RE: PRS1 Auto BIPAP, Starting Prisma ST machine
Arnie, a 1-L/min oxygen bleed with the BiPAP is a very low rate due to dilution of the oxygen in the positive air pressure circuit. When using supplemental oxygen, we seek to increase the "fraction of inspired oxygen" FiO2 to a higher level than the ambient air or 20%. It is unlike using a cannula that directly delivers the oxygen to the nose because the dilution air is so great. We wrote an oxygen bleed wiki that allows you to estimate FiO2 and to understand the process better. http://www.apneaboard.com/wiki/index.php..._with_CPAP

The best way to know if you're hitting targets and maintaining SpO2 in the blood is to monitor using a pulse oximeter. These are relatively inexpensive devices that clip on a finger or are worn on the wrist and let the oxygen bleed be titrated. As far as the efficacy of the ST, we don't know anything without seeing settings and a chart.
Sleeprider
Apnea Board Moderator
www.ApneaBoard.com

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