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Troubleshooting
X
TRA
Operator’s Manual
20077/021 US
14-25
Therapy Concerns Unrelated to the Equipment
If the patient situations listed in Table 14-4 occur, do not automatically assume that the problem is due
to the equipment.
Issue Possible Cause Possible Action
Adult Respiratory Distress Syndrome
(ARDS) 1. Trauma.
2. Microaggregates clog microvasculature
in the lungs.
3. Anesthesia.
1. Medical assessment of the patient to
determine treatment.
2. Use a microaggregate filter on the
blood administration line.
3. Medical assessment of the patient to
determine treatment.
Air Embolus 1. Bypass circuit.
2. Surgical positioning.
3. IV infusion. 1. Perfusion management.
2. Medical vigilance.
3. Avoid direct reinfusion with-out an IV
line air sensor.
Clotting in System 1. Inadequate anticoagulant delivery.
2. Simultaneous use of incompatible IV
fluids or topical hemostats.
3. Decreased patient Antithrombin III
levels.
1. Monitor anticoagulant ratio more
closely.
2. Avoid use of Ringer's when using
citrate anticoagulant.
Do not aspirate topical hemostats into
the system.
3. If using heparin anti-coagulation,
consult the physician regarding
alternate anticoagulation.
Hemoglobinurea 1. Acute hemolytic transfusion reaction
from homologous blood products.
2. Trauma.
3. Excess plasma hemoglobin from
bypass procedure.
4. Excess plasma hemoglobin from
inadequate Wash cycle during
processing.
5. Nonimmune hemolytic reaction (e.g.,
mechanical causes of hemolysis).
1. Perform transfusion reaction laboratory
studies.
2. Medical assessment of the patient to
determine treatment.
3. Medical assessment of the patient to
determine treatment.
4. Avoid processing partially filled
centrifuge bowls; use at least one liter
during the Wash cycle.
5. Medical assessment of the patient to
determine treatment.
Table 14-4 Therapy Concerns Unrelated to the Machine