12
CAREvent® ALS - User Manual
Note:
When using the single use patient valve, vomitus may be
forced past the diaphragm and contaminate the bio- filter. This
may necessitate the use of a new single use valve.
3.4. Action to be taken if patient
vomits during resuscitation
Should the patient vomit into the mask during resuscitation the
following steps should be followed to clear the foreign material:
1. Remove the mask from the patient’s face and clear any foreign
material from the patients airway. Depress the manual button
or allow the resuscitator to cycle automatically for a few
breaths to clear the mask and valve of foreign material.
2. If depressing the manual button repeatedly or automatically
cycling the resuscitator does not clear the foreign material
from the patient valve,either disconnect the resuscitator from
the gas supply or turn the selector to the OFF position, remove
the facemask and unscrew patient valve swivel housing (a)
from the resuscitator body being careful to ensure that the
diaphragm (b) is retained (Fig.3).
3. Shake out any foreign material from the resuscitator,
diaphragm, face mask and patient valve swivel housing.
4. Rotate the selector to the appropriate position and either
operate the manual button to blow out any contaminant or
cycle automatically for a few breaths.
5. Re-assemble diaphragm, patient valve and face mask and
operate the manual button or automatically cycle the
resuscitator for a few breaths to ensure correct function.
6. Restart resuscitation as previously indicated.
3.5. Demand Breathing and Automatic Circuit Shut Off
Should the patient commence spotaneous breathing at a flowrate
of greater than 30 lpm for more than 1 second the CAREvent®
ALS will sense the patient’s inspiratory effort and will stop cycling
automatically allowing the patient to “Demand Breathe” at their
own rate and volume on 100% oxygen (if connected to an oxygen
supply). If they cease spontaneous breathing the ventilator will
recommense automatic cycling after a delay of 5 - 8 seconds
(depending on the depth of the patients previous respiration)
without intervention by the rescuer.
