Haemonetics MCS+, Руководство по эксплуатации

Страница: 96 / 110

7-4 Troubleshooting during an MCS+ Procedure
P/N 85213-30, Manual revision: B
A
PPLYING SPECIFIC TROUBLESHOOTING TECHNIQUES
Power failure
procedure
Policies may vary among apheresis centers concerning the procedure to follow
in the event of a power failure.
It is important for the operator to remember that during DRAW, the blood in the
needle tubing is not anticoagulated. All needles should be considered as
containing non-anticoagulated blood, in the event that processing should be
interrupted during DRAW.
The operator can bring anticoagulated blood to the needle site by the following
actions:
"
Place the power ON/OFF switch in the OFF position.
"
Press the donor valve lever to hold the valve open.
"
Manually turn the blood pump in a counter-clockwise direction, providing
5 full, slow rotations.
This will bring approximately 5 ml of anticoagulated blood through the needle
tubing to the venipuncture site. If power has not been restored within 5 minutes,
the operator should begin to manually return the blood components in the bowl
and tubing to the donor using the “Manual Gravity Infusion” procedure.
If power is restored, and the original venipuncture has been maintained open for
blood to flow freely, the operator can re-install the tubing in the valves and
attempt to recover the procedure and continue component collection.
Manual gravity
infusion
procedure
During an apheresis procedure, an unusual circumstance may arise (such as a
power failure or other technical reason) in which the MCS+ device cannot pump
the contents of the disposable bowl and tubing back to the donor. Haemonetics
suggests a technique using gravity to manually infuse the remaining contents.
This can eliminate unnecessary blood loss for the donor.
This procedure is applicable for all of the MCS+ protocol options. Policies may
vary among apheresis centers concerning the return of cells by gravity. The oper-
ator should consult and apply the local standard operating procedure for gravity
infusion of cells if variation in procedure exists.
Without an external power source, the MCS+ valves must be opened manually
to release the tubing. To do this, the operator must press the lever of the pinch
valve toward the cabinet until the tubing can be removed.
Warning: The operator should carefully monitor the venipuncture site. If infil-
tration of the vein is observed at any point, the procedure should be discontin-
ued.