33
Annual Inspection and Testing
IV. Occlusion Pressure Range Tests
Downstream occlusion and upstream occlusion use stored constants for offset and gain to maintain
occlusion accuracy.
Note:
Perform either downstream test 1 or test 2, but not both.
☐
Downstream Occlusion Pressure Range Test 1
Description:
Pressure is generated by activating the pump mechanism with an attached, filled, clamped CADD
™
medication cassette reservoir. The pump is started and a PCA dose is given until the high pressure
alarm sounds.
Equipment needed:
•
CADD
™
medication cassette reservoir containing distilled water.
•
1 CADD® key
Procedure:
1. Turn the pump on and attach a CADD
™
medication cassette reservoir containing distilled
water. Latch and lock the cassette.
2. Prime the tubing until it is filled with fluid to the end of the Luer lock connector. The system
must be free from air bubbles for this test.
3. Close the clamp on the distal end of the tubing near the female Luer of the CADD
™
medication
cassette reservoir.
4. Program the pump to the following parameters:
Units
Continuous Rate
PCA Dose
PCA Lockout
Reservoir
Volume
mL
0.0 mL/hr
1.0 mL
1 min
10.0 mL
5. Start the pump and activate a PCA dose, noting when the high pressure alarm is activated.
6. The pump should alarm when the pump delivers between 1 and 2 activations.
☐
Downstream Occlusion Pressure Range Test 2
CAUTION:
At the completion of the Downstream Occlusion Pressure Range Test 2, the pressure
must be reduced to zero before detaching the cassette from the pump; otherwise, the cassette
may rupture. Safety glasses should be worn while conducting or observing this test.
Description:
An adjustable metered pressure source is connected to the CADD
™
medication cassette reservoir
tubing. The pressure is slowly increased until the high pressure alarm sounds
Equipment needed:
•
Pressure gauge, 30 psi ± 1 psi (2.07 bar ± 0.07 bar)
•
Pressure vessel partially filled with water
•
Pressure regulator, 30 psi (2.07 bar)
•
CADD
™
medication cassette reservoir containing water
•
1 CADD® key
•
Safety glasses
Note:
Do not use a CADD® extension set with anti-siphon valve.
