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Procedure
1. Spike an appropriate standard I.V. bag.
2. Prime the entire fluid path.
3. Program the pump to deliver a continuous
rate of 20 ml/hr.
4. Start the pump.
5. Clamp the tubing halfway between the fluid
reservoir and the pump.
6. The pump should alarm within three activa-
tions after clamping the tubing.
Note: Make sure the upstream occlusion
sensor is turned on in the Biomed
Toolbox.
Accuracy Testing
Accuracy testing may be performed in any
delivery mode. This manual shows an example
of delivery accuracy testing with the pump in
the PCA delivery mode.
Gravimetric Accuracy Testing (Option 1)
Description
A Medication Cassette reservoir is partially
filled with water and weighed. The reservoir is
then attached to the pump and the pump is set
to deliver a certain amount of water. The reser-
voir is then removed and weighed again. The
amount of water delivered is compared to the
amount that the pump should have delivered.
Nominal system accuracy is given in the techni-
cal specifications section for the pump. That is,
under the test conditions described below, the
accuracy of the pump and reservoir will be
nominal with a 90% confidence level. The
nominal test conditions are as follows: degassed
water at 25 ± 5°C without back pressure.
Equipment needed
• 50- or 100-ml Medication Cassette reservoir.
• 50- or 60-ml syringe.
• CADD
®
extension set with anti-siphon valve
• A balance accurate to 0.1 g.
• 40 ml of room temperature water.
Procedure
1. Fill the 50- or 60-ml syringe with 40 ml of
water. Transfer the water into a
Medication Cassette reservoir.
2. Remove any air from the Medication
Cassette reservoir by aspirating the air with
the syringe. Attach the CADD
®
extension set
with anti-siphon valve. Prime the tubing so it
is filled with fluid to the end of the extension
set luer lock connector.
3. Secure the clamp as close to the extension set
luer lock connector as possible. This should
assure a minimum water loss from the tubing
when the syringe is removed.
4. Weigh the entire reservoir/extension set assem-
bly and record the weight. This is the pre-
delivery weight. (This weight includes the
empty Medication Cassette reservoir, exten-
sion set, and weight of the water.)
5. Attach the Medication Cassette reservoir to the
pump. Program the reservoir volume to 20 ml.
Now press the ENTER key. This value is the
intended delivery volume. (One ml of water at
20°C weighs 1 gram.) Open the clamp.
6. With the pump in Lock Level 0, program a
continuous rate of 0 ml/hr and a dose of 1.0 ml
(but do not deliver a Demand Dose). Start the
pump and deliver a clinician bolus of 20 ml.
7. Again, secure the clamp as close as possible to
the end of the extension set luer lock connec-
tor. Remove the Medication Cassette reservoir
from the pump and weigh the entire reservoir/
extension set assembly. This is the postdelivery
weight.
8. Calculate the difference in weight between the
predelivery weight and the postdelivery weight.
This is the weight of the amount delivered.
9. Find the difference between the volume of the
amount delivered and the intended delivery
volume. This is the inaccuracy volume.
10.Divide the inaccuracy volume by the intended
delivery volume and multiply by 100. This is
the accuracy error percentage (See Table 14).