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3.3 CMV
Continuous Mandatory Ventilation
In this mode the inspiratory cycle is initiated by the
ventilator at a set BPM rate. The breaths are time
cycled.
The User sets the following:-
• BPM
• Positive End Expired Pressure (PEEP)
• Peak Inspiratory Pressure (PIP)
• Inspiratory Time (Ti)
• O
2
%
• High and low pressure alarm thresholds
• Tidal volume, high and low alarm thresholds
• Minute volume, high and low alarm thresholds
3.3.1 CMV with TTV
plus
(Targeted Tidal Volume)
This is as for basic CMV where the inspiratory
pressure shall be controlled by the ventilator to
achieve the user set Vte.
The User sets the following:-
• Enables Targeted Tidal Volume (TTV) and
selects volume to be delivered (Vte)
• Max PIP
3.4 PTV
Patient Triggered Ventilation
In this mode all the patient's breath attempts are
pressure supported. Mechanical breaths are
delivered at the set parameters (Ti, PEEP and PIP)
if no patient effort is recognised.
The User sets the following:-
• Positive End Expired Pressure (PEEP)
• Peak Inspiratory Pressure (PIP)
• Inspiratory Time (Ti)
• Backup breath rate (Backup)
• Apnoea alarm time (Only if backup breath rate is
9 breaths per minute or lower)*
• O
2
%
• Flow breath detection threshold (Trigger
Sensitivity) – The patient effort required for the
ventilator to recognise the breath
• High and low pressure alarm thresholds
• Tidal volume, high and low alarm thresholds
• Minute volume, high and low alarm thresholds
3.4.1 PTV with TTV
plus
(Targeted Tidal Volume)
This is as for basic PTV where the inspiratory
pressure shall be controlled by the ventilator to
achieve the user set Vte (for assisted breaths).
The User sets the following:-
• Enables Targeted Tidal Volume (TTV) and
selects volume to be delivered (Vte)
• Max PIP
*Note: PTV will continue to function as stated,
but with breath rates of 10 and above the
Apnoea alarms are de-activated. Backup rates
of 10 BPM and above are deemed sufficient to
support the patient.
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