Haemonetics MCS+, Operation Manual

Page: 90 / 110

6-4 Ensuring Safety and Quality for an MCS+ Procedure
P/N 85213-30, Manual revision: B
Avoiding bowl
misalignment
An improperly installed disposable bowl can become misaligned as it spins. This
can create excessive friction, and consequently overheat the bowl contents. The
operator should verify the alignment of the bowl at the time of installation.
Note: In certain MCS+ protocols, the programming will instruct the centrifuge to
spin the bowl during PRIME, as a control for proper bowl placement.
Warning: The operator must not use any bowl which cannot be properly seated
in the centrifuge chuck. Overheating can occur (subsequently leading to hemol-
ysis) and make any blood being processed unsafe for re-infusion. During MCS+
operation, the operator should interrupt the collection procedure if an abnor-
mal or excessive noise appears, related to the spinning bowl.
Avoiding
overheating due
to mechanical
situations
Overheating could also result from a mechanical or maintenance-related
problem, such as a defective bearing or seal within the centrifuge well. In this
case, the operator should contact the local Haemonetics representative and
discontinue use of the MCS+ device until it is serviced.
Warning: If any component of the MCS+ device has become overheated during
a procedure, and thus overheats the blood being processed, the blood compo-
nents cannot be considered safe for re-infusion.
Controlling for
red cell overrun
Red Cell Overrun is the term used to describe the presence of erythrocytes in the
effluent tubing and/or product collection container during an apheresis proce-
dure. It is important that the operator observe the appearance of the plasma as it
is collected. A pink or reddish hue could indicate a possible red cell spillage
which should be investigated immediately.
If the cause of the reddish hue cannot be determined to be a normal result of the
selected MCS+ protocol, the procedure should be discontinued immediately and
the blood components in the bowl must not be returned to the donor/patient.