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 reservoir 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 technical 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).

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