Fluke Biomedical medTester 5000C - Manual (Page 149)

Biomedical Test System
IV Pump Module
10
10-11
Dual Rate Test
• The dual rate test measures the delivery of two sequential fluid
volumes pumped at different flow rates by the IV pump. This fluid
delivery technique is typically referred to as “piggybacking” in the
clinical environment. The dual rate test is conducted using the low
flow rate range of the Infutest 2000 Series D IV pump analyzer only.
In this low range, average flow rate measurements are restricted to
170 ml/hr with peak (or instantaneous) flow rate measurements
limited to 200 ml/hr. Additionally, the initial higher fluid delivery
(“Secondary”) must be five times (5:1) the following lower
(“Primary”) flow rate and must minimally consist of 1.0 ml measured
IV fluid.
• In a dual rate test, the medTester starts testing the secondary rate,
indicated by “SEC” in the upper right corner of the display. It displays the
elapsed time (ET=), the average flow rate (A=), the instantaneous flow
rate (I=), and the cumulative volume (V=).
• After 5 minutes, the medTester checks each average flow rate value with
the programmed limits for the secondary rate. If the average flow rate is
outside the limits, it is displayed with a ‘#’.
• The test cannot end during the secondary rate. It must continue to the
primary rate to successfully finish.
• When the IV pump rate changes to the primary rate, the Infutest detects
the change and notifies the medTester. Then the medTester indicates
“PRI” in the upper right corner. It displays the test parameters as before
and also displays the remaining time (RT=) for a timed test or the
remaining volume (RV=) for a volume ended test.
• And as before, the medTester checks each average flow rate value with
the programmed limits, this time for the primary rate. If the average flow
rate is outside the limits, it is displayed with a ‘#’.
• Now that the primary rate is running, you can wait for the test to end
automatically, if it is a timed or volume ended test, or you can end the test
by pressing F5 END.
• At the end of the test, the medTester again checks both the average flow
rates with the programmed limits. If either average flow rate is outside the
limits, it is displayed with a ‘#’ with the opportunity offered to continue
or repeat the flow test.