H-1.601. 00137-B3.0
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A typical pressure waveform of V-SIMV is shown below：
FIGURE 30 V-SIMV
In P-SIMV (Pressure-Constant
Synchronized Intermittent Mandatory Ventilation), within a specific
activation window, ventilator detects patient's respiratory effort based on
window, ventilator detects patient's respiratory effort based on preset
activation sensitivity and immediately gives a push of mandatory ventilation
at preset pressure so as to synchronize delivery of mandatory ventilation
with patient's inhaling effort. During duration of activation window, if patient
is capable of activating ventilator, an assisted breath will be given; if not, a
push of mandatory ventilation will be provided.
A typical pressure waveform of P-SIMV is shown below：
FIGURE 31 P-SIMV
Note: the activation mode in T5 ventilator is pressure activation mode.
5.5.4 CPAP
For purpose of CPAP (Continuous Positive Airway Pressure), the ventilator is
furnished with a built-in sensitive airway pressure measuring and adjusting
system, which adjust positive air flow rate over time and maintain airway
pressure substantially at the estimated CPAP. CPAP for intubated patient
ranges from 2~5 cmH2O up to 15 cmH2O. CPAP technology can be used
only as an assistant breathing means for patients with normal functions of
respiratory center and spontaneous breathing, and to exercise respiratory
function. CPAP is applicable to hypoxemia mainly resulted from increase of
Qsp.
CPAP is a ventilation mode which, based on spontaneous breathing, provide
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