Automatic Mode - Gambro Cobe Spectra Essentials Manual

Automatic and Manual Modes

Automatic Mode

Table 6-1 describes how the FLOW, INLET:AC RATIO, and SPIN
RPM keys function in relation to changes during Automatic mode.
Table 6-1: Key functions in Automatic mode
Key
(FLOW keys are above
the display)
AC FLOW AC pump flow rate
INLET FLOW Inlet pump flow rate
PLASMA FLOW Plasma/RBC pump flow rate
COLLECT/REPLACE FLOW Collect/replace pump flow rate
INLET:AC RATIO Inlet:AC ratio
Range: 3:1 to 50:1
6-2
Function
You cannot change the AC pump flow rate in Automatic mode.
When you change the inlet pump flow rate, the Spectra system preserves the inlet:AC ratio by adjusting the
AC pump flow rate in direct proportion.
During all procedures except TPE and RBCX procedures, you can increase the inlet pump flow rate until the
AC infusion rate reaches a maximum of 1.2 mL/min/L of TBV, or the inlet pump flow rate is at the maximum.
If you increase the inlet pump flow rate to the point that the AC infusion rate exceeds 1.2 mL/min/L of TBV,
the "AC infusion rate exceeds allowable limits" alarm occurs. For information about the alarm, see
page 12-9.
During ELP, LRS, LRST, TPE, RBCX, and AutoPBSC procedures, you cannot change the plasma/RBC pump
flow rate in Automatic mode. That pump flow rate changes automatically to maintain the optimum interface.
(Changes to the entered donor/patient Hct cause the plasma pump flow rate to change: Increasing
donor/patient Hct decreases the plasma pump flow rate.)
During WBC procedures, you can change the plasma pump flow rate to maintain a stable interface.
During all procedures except WBC procedures, you cannot change the collect/replace pump flow rate in
Automatic mode.
If you change the inlet:AC ratio, the Spectra system changes the inlet pump flow rate only. The AC pump
flow rate remains the same.
For general information about configuring the inlet:AC ratio, see page 5-5 or Chapter 8.
Description
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COBE Spectra™ Apheresis System • Essentials Guide