2.7.4
SPONTANEOUS MODES
In the spontaneous modes
(A)
Volume Limited
(B)
Pressure Limited
there is continuous flow into the breathing circuit from the
spontaneous flow valve depending on setting. If PEEP is set to some
value the gas flow from the PEEP regulator flows into the venturi base
assembly, and into the PEEP valve and then into the expiratory drive
line. This flow results in a pressure build up in the expiratory drive line
resulting in PEEP.
If the
manual breath button is depressed in the spontaneous mode the
ventilator will deliver a breath whose characteristics depend on the
ventilator settings, which are displayed when the preset switch is
depressed. In the volume limited spontaneous mode the ventilator will
deliver a volume limited breath as per the machine settings. While in
the pressure limited spontaneous mode the ventilator will deliver
a
pressure limited breath as per the machine settings.
2.7.5
NEBULIZER
The nebulizer is operational when the
NEB.
switch located on the front
of the unit behind the door is turned "ON". When the switch is turned
"ON" an electrical signal is supplied to the Nebulizer solenoid, which
opens. The opening of the solenoid allows gas to flow from the main
flow and out to the nebulizer through the outlet located on the right
hand side the unit. The gas flows in the nebulizer circuit only during the
inspiratory cycle. The nebulizer flow is about
6
LPM (100 cclsec).
When the nebulizer switch is turned on the tidal volume displayed
takes into account the flow through the nebulizer and adds the
apprcpriate volume to the display tidal volume.
To Next Page
Loading...
