Philips BiPAP A40 - 2. Therapy Modes and Features; 2.1 Device Therapy Modes

Chapter 2 Therapy Modes and Features
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2.1 Device Therapy Modes
Therapy
Modes
Description
CPAP Continuous Positive Airway Pressure; CPAP maintains a constant level of pressure
throughout the breathing cycle.
S Spontaneous Pressure Support; A Bi-level therapy mode where breaths are patient-
triggered and patient-cycled. The device triggers to IPAP (Inspiratory Positive
Airway Pressure) in response to spontaneous inspiratory eort and cycles to EPAP
(Expiratory Positive Airway Pressure) during exhalation. The device also cycles a
patient-triggered breath if no patient exhalation eort is detected for 3 seconds. The
level of Pressure Support delivered is determined by the dierence between the IPAP
and EPAP settings (PS = IPAP - EPAP)
S/T Spontaneous/Timed Pressure Support; A Bi-level therapy mode where each breath
is patient-triggered and patient-cycled or machine-triggered and machine-cycled.
S/T mode is similar to S mode, except that the device also will enforce a set minimum
breath rate by, if necessary, providing machine (time) triggered breaths. For these
breaths, the inspiratory time is also a set value.
T Timed Pressure Support; A Bi-level therapy mode where breaths are machine-
triggered and machine-cycled. T mode provides mandatory pressure assist with
bi-level pressures. The patient’s breathing rate has no eect on the machine rate or
pressure levels. The trigger to IPAP is determined by the breath rate setting, and the
cycle time is determined by the inspiratory time setting.
PC Pressure Control Pressure Support; A Bi-level therapy mode where each breath is patient
or machine-triggered and machine-cycled. PC mode is similar to S/T mode, except that
all breaths are machine-cycled. This is a pressure-limited, machine or patient-triggered,
time-cycled mode. The cycle time is determined by the Inspiratory Time setting.
2. Therapy Modes and Features