Philips Trilogy 200 manual Ramp, Bi-Flex

Bi-Flex

In S mode, the Bi-Flex attribute adjusts therapy by inserting a small amount of pressure relief during the latter stages of inspiration and during the beginning part of exhalation. In the following diagram, the bold lines represent Bi-Flex in comparison to the dashed line representing normal BiPAP therapy. Bi-Flex levels of 1, 2, or 3 progressively reflect increased pressure relief that will take place at the end of inspiration and at the beginning of expiration.

PRESSURE

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Note: Bi-Flex is only available up to 25 cm H2O in S mode.

IPAP

EPAP

BiPAP

Bi-Flex	1
	2

3

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Bi-Flex in Comparison to Traditional Bi-Level Therapy

Ramp

The device is equipped with a linear ramp function. In CPAP, S, S/T, T, and PC modes, the Ramp feature will reduce the pressure and then gradually increase (ramp) the pressure to the prescription pressure setting so patients can fall asleep more comfortably. The figure below illustrates how the ramp function works.

Note: IPAP will not ramp below 4 cm H2O.

The Ramp Function

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Chapter 3 Modes, Features, and Alarms