Processing
5-22
20077/021 US XTRA Operator’s Manual
Factory Protocols
Protocols represent specific methods of processing blood in order to obtain hematic components. A
protocol defines a processing cycle which may be run one or more times in a case.
The execution of one cycle of a protocol corresponds to the transfer of blood to the centrifuge bowl,
the processing of the blood with removal of supernatant and related contaminants, and the collection
of packed RBCs.
Each cycle is made up of a sequence of phases. A phase corresponds to a succession of actions which
carry out a functional part of the cycle (such as filling the bowl during a Fill phase or washing the bowl
content during a Wash phase).
Protocols are not completely rigid. The operator may change some protocol parameters during an
active phase (changing the pump rotor speed, for example) and may also manually progress to the
next phase.
The X
TRA system ships with six factory-defined protocols which are divided into three families:
• Preoperative sequestration: for the separation of whole blood into red cells, platelet poor
plasma, and platelet rich plasma (the PPP, PRP1, and PRP2 protocols).
• Autotransfusion (Intraoperative): for the concentration, washing, and collection of red cells
(the Popt and Pstd protocols) and enhanced fat particles removal (Pfat) in an intraoperative
context.
• Autotransfusion (Postoperative): for the concentration, washing, and collection of red cells
(the Post-op protocol) in a postoperative context, allowing the use of the on-board vacuum pump
in its postoperative mode.
Note: Only factory Post-op and user protocols derived from it are intended to be used in
postoperative contexts.
Note: Make sure the X
VAC vacuum pump is set to POST mode, while collecting blood postoperatively.
The intraoperative and postoperative protocols together are referred to as the autotransfusion (ATS)
protocols.
Protocols differ from one another in the type and order of the phases, the parameters of each phase,
and the algorithms used during each phase.
It is possible to create user-defined custom protocols derived from one of the factory protocols. For
details on creating and customizing protocols, refer to
Chapter 9: Programmability Option
.
This section describes only the ATS protocols which ship with the X
TRA system: the three
intraoperative protocols (Popt, Pstd and Pfat) and the one postoperative protocol (Post-op). The
Preoperative sequestration protocols are described in
Chapter 10: Preoperative Sequestration (PPP
and PRP)
.
To learn how to select and actually process a case using these protocols refer to the section “Running
a Case With the X
TRA System” on page 5-5.
WARNING
Use of protocols different from Post-op in postoperative contexts
might expose the patient to risks of tissue damage due to high
aspiration level of vacuum module and risks of blood return due to
availability of the Return function.
WARNING
Use of the vacuum pump in INTRA mode while collecting blood
postoperatively might expose the patient to risks of tissue damage.
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