Breas Vivo 45 LS User Manual page 74

Between the mandatory breaths, the patient may trigger spontaneous breaths until the
next SIMV cycle begins. The ventilator will respond to the patient's inspiration efforts
with additional pressure support breaths. The inspiratory pressure of these support
breaths is defined by the SIMV Support Pressure, together with the settings for Rise
Time and Expiratory Trigger. The default value for SIMV Support Pressure is the
Inspiratory pressure in PCV.
After a mandatory breath, Vivo 45 LS will always wait at least one second before a new
mandatory breath can be initiated in the following SIMV cycle.
5.4.4.8 PCV-MPV– Pressure Controlled Ventilation with Mouth-Piece Ventilation
Mouth Piece Ventilation
The PCV-MPV mode is tailored specifically for those patients that use mouthpiece
interface together with pressure controlled ventilation.
Mouthpiece ventilation is intended for adult patients who are able to initiate breaths
with the mouthpiece circuit.
In MPV breath mode it is possible to set Breath Rate to zero so that breaths are only ini-
tiated when the patient triggers them using the mouthpiece. ThePEEP setting is not
available but always set to Off so that no air blows from the mouthpiece when no breath
is being delivered.
As the patient is not always connected to the ventilator several of the surveillance func-
tions are not working in the same way as in other modes:
• Disconnection alarm is not available in MPV mode.
• Low Pressure alarm is only active during breaths.
• Apnea alarm is possible to set to longer times and is an important mean of surveil-
lance to make sure that the patient gets ventilation support regularly.
When switching to MPV mode all alarms, except from High/Low Pressure Alarms, are
automatically switched off to avoid false alarm triggering (when changing between pro-
files the alarm settings does not change to Off, but stays as defined in the profiles)
WARNING!
• The alarm levels must be assessed and adjusted considering the patient's condition
and treatment settings.
• MPV breath mode shall be used with the mouthpiece circuit including the mouth-
piece interface only.
• The MPV circuit including the mouthpiece interface shall be used in MPV breath
mode only and is not for use in any other breath mode.
• MPV breath mode shall not be used with ventilator dependent patients.
74 How to Use the Vivo 45 LS
User manual
Doc. 007301 K-1