Respironics DreamStation Service & Technical Reference Manual page 37

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SmartRamp When SmartRamp mode is enabled, the therapy device's
ramp function utilizes an Auto titrating algorithm during the
ramp period. It allows patients the ability to stay at lower
pressures during the ramp period, to improve their acclimation
to therapy.
SmartRamp mode functions differently, depending on the
therapy mode that the device is using.
*In CPAP or CPAP-Check mode, the SmartRamp applies the
Auto-CPAP algorithm during the ramp period. The Ramp Start
pressure becomes the Auto Minimum pressure during the
ramp period. The Auto Maximum pressure during ramp is the
CPAP or CPAP-Check pressure.
*In Auto mode, the SmartRamp applies the Auto-CPAP
algorithm during the ramp period. The Ramp Start pressure
becomes the Auto Minimum pressure during the ramp period.
The Auto Maximum pressure during ramp is the Auto
Minimum under normal Auto mode.
*In BiPAP or Auto-BiPAP mode, the SmartRamp applies the a
modified version of the Auto-BiPAP algorithm during the ramp
period. The Ramp Start pressure becomes the EPAP
Minimum pressure, and the Pressure Support Minimum
pressured is applied.
The IPAP Maximum pressure during ramp is the EPAP or
EPAP Minimum under normal BiPAP or Auto-BiPAP mode.
The SmartRamp period will terminate in either of two ways:
1) If SmartRamp pressure reaches the minimum pressure of
the therapy mode selected, then SmartRamp ends, and the
device continues to deliver therapy under the selected therapy
mode, or:
2) If SmartRamp pressure does not reach the minimum
pressure of the therapy mode selected by the end of the
Ramp Time, then pressure is increased at a rate of
approximately 1 cm H2O per minute. Once the pressure
reaches the minimum pressure of the therapy mode selected,
then the device will continue to deliver therapy for that mode.
If SmartRamp mode is not enabled, then the standard, linear
pressure ramp mode is active.
Ramp Time When you set the Ramp time, the device increases the
therapy pressure from the value set on the Ramp start screen
to the therapy pressure setting over the length of time
specified here. If the therapy pressure is set to 4 cm H2O (the
minimum setting), this screen will not display.
Note: Depending on the therapy mode, the therapy pressure
setting could be CPAP pressure, CPAP-Check pressure, Auto
min pressure, EPAP pressure, or EPAP min pressure.
Note: If the Ramp time is set to 0, Ramp start will not display.
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