6300A Operator’s Manual
NewTech Medical Limited - 14 -
5.3
SIMV: Synchronization Intermission Mandatory Ventilation
This is a kind of method combined by patient independence breath and machine mandatory
ventilation. The mandatory ventilation is touching off synchronous. It is used in the procedure from
mandatory ventilation to independence breath before carrying down machine.
a) SIMV
f
/2: mandatory ventilation frequency is one half of A/C ventilation frequency. The
mandatory ventilation of SIMV and independence breath is both touch off synchronous with patient,
so the touch off electrical level should be set. Normal it is adjusted around –0.3kPa. The
independence breathe when
Other parameter settings are same as that of A/C.
b) SIMV f/4: The command ventilation frequency is one fourth of A/C ventilation frequency. Others
are same as that of f/2.
Figure 5-3
SIMV Waveform
5.4 A/C+SIGH
SIGH is that on the basis of A/C make a deep inspiration of double tidal volume every 100 times,
which is adapted to the long term mechanically ventilation patient and can be used in “expanding
lung” of thorax operation. When expanding lung, because requires continuous several sighs it is
needed to convert ventilation method conversion switch several times between A/C and SIGH.
When signing because tidal volume is doubled and the peak value of airway press increases, the
upper limit set value of airway press will increase. That is the peak value is higher 1kPa than the
value of sighing, the set of other parameters are same to A/C.
