5.3. FITTING MASK OR MOUTHPIECE AND FILTER
Select mask or mouthpiece and fi lter as appropriate for the patient and fi t to the demand valve
by pushing it over the 22 mm insert female tapered outlet on the patient port (see Fig. 1).
NOTE: Some patients fi nd masks claustrophobic and may fi ght against the use of EASE II if
off ered in this way. With such patients use of a mouthpiece is recommended.
5.4. TESTING PRIOR TO ADMINISTRATION
Units should be checked by lightly pressing the test button (see fi g 1., fi g.2). Gas should be
heard fl owing through the mask or mouthpiece. On releasing the test button, the fl ow should
stop.
NOTE: If the system does not operate i.e. does not give a gas fl ow on depressing the test
button or the system does not stop giving fl ow, turn off the cylinder or disconnect from the
gas source and refer to the TROUBLESHOOTING chart in Section 9.
6. OPERATIONS
6.1. ADMINISTERING OF MEDICAL GASES
Medical gases 50/50% O
do so and under qualifi ed medical supervision.
Cylinder contents must be checked regularly during therapy and the cylinder replaced as
necessary.
1.
Calmly explain to the patient purpose and operation of the demand valve. Reassure and
encourage him/her to breathe normally.
NOTE: Patients do not have to remove the mask or mouthpiece during exhalation.
2.
Place the mask on the patient and support the mask over the mouth and nose, with the
patient breathing normally and not remove the mask when exhaling.
NOTE: If a mouthpiece is fi tted, instruct them to hold it between their teeth, sealing on it with
their lips and to breathe through their mouth only.
3.
Instruct the patient to breathe through the demand valve as required to reduce the level of
pain. (Continuous use is often unnecessary).
NOTE: Supervisory personnel can help support the mask, if should the patient is incapable
of holding it.
4.
Constantly monitor the patient and the cylinder contents during administration.
Check volume of gas in the cylinder and replace the cylinder if necessary.
5.
The administration of 50/50 O2/N2O may cause the patient to become drowsy. The seal
between the mouth and the demand valve will be lost and ambient air will be inhalated. The
patient will then begin to regain consciousness and an awareness of pain; and should be
encouraged to breathe the gas again.
6.2. AFTER USE
1.
When treatment has been completed, close the cylinder valve and operate the test button
to de-pressurize the system or disconnect the demand valve from the wall outlet or quick
connector.
2.
Clean the system as described in Section 7.
/N
O or 100 % O
should only be administered by persons trained to
2
2
2
5/208
EN