Therapeutic Plasma Exchange (TPE) Procedures
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Spectra Optia Apheresis System Operator’s Manual
Decreasing the Run Time After Converting the Access to a Single Needle
Converting the access to a single needle during the run causes an increase in the predicted run time for the
procedure. Consider the following alternatives for decreasing the predicted run time if a shorter run is necessary:
•
Increase the inlet pump flow rate or increase the AC infusion rate.
Increasing these rates allows the system to process more blood in less time. Be aware that either option results
in a greater volume of AC delivered to the patient and increases the potential for the patient to experience a
citrate reaction.
•
Increase the inlet:AC ratio.
This causes the inlet pump flow rate to increase. However, it decreases the system’s ability to manage
anticoagulation of the extracorporeal circuit and can result in clumping in the circuit. Monitor the run
carefully as you increase the inlet:AC ratio.
The increase in the run time can be more significant if you changed the inlet pump flow rate that the system had
established at the start of the run. After the conversion, the system resumes the run using the rate you entered
rather than using a rate that is optimal for a single access.
SpectraOptiaOpsManual.book Page 96 Thursday, May 17, 2018 11:24 AM