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the study is complete. The use of this motor control will be a rare occur-
rence. Do not adjust unless absolutely necessary and be sure to return it
to its original position. To be effective, the increase in motor speed must
be accomplished before the bag is full, thus, it is vital to watch the "From
Patient" bag carefully during washout.
12. When the washout is complete, remove the patient from the system.
Allow the system to run for a few more seconds or until both bags are
empty.
maintenance:
General maintenance procedures:
1. Change the moisture absorber and the soda-lime (CO
every study. If you wait until the granules change color, efficiency is
already greatly reduced. Absorber granules can also break down and the
smaller granules and powder clog the system, hinder patient air flow and
damage system circuitry.
Biodex Medical Systems has developed CO
absorber filter cartridges that are included in our Xenon Disposable
Convenience Kits. The cartridges are filled with pre-measured amounts of
granules. The unprecedented design of these cartridges allows for single-
use and absolutely no chance of granule breakdown.
2. Administer the xenon as close to the patient as possible. Having the
xenon enter the patient near the face mask or mouthpiece ensures a good
bolus for single breath. We recommend using an injection adapter as
close to the patient as possible.
Biodex carries an entire line of disposable xenon circuits, some with
injection adapters, with luer lock fittings, or injection ports (see catalog).
These options will allow the use of a xenon gun, xenon injection dispenser
or syringe directly in line with the patient's breathing passage.
3. Test the trap effluent on a regular basis. Keep a formal record according
to NRC regulations. The easiest and most efficient way to test the trap is
by using the Xenogard Room Air/Trap Monitor #136-751. If you do not
have a monitor, refer to the Leak and Trap Test procedure explained later
in this chapter.
4. Periodically remove the two breathing tubes from the back of the unit.
Take one tube and connect it to both ports, forming a C configuration.
Place the handle in position #2 and press the oxygen button until the bags
are full and tight up against the glass windows. They should remain full for
approximately two minutes. If they sag or fail to blow up tight, the system
may have a leak. Refer to the Leak and Trap Test procedure as explained
later in this chapter.
absorber and moisture
2
– 8 –
absorber) after
2
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