Terumo 801763, Operator'S Manual, Page: 204 / 359

Centrifugal Control Unit
6-5
Set Up and Prime
Consult the disposable centrifugal pump instructions for
directions, warnings, etc., regarding the pump. Use only
the Terumo
®
Sarns™ Centrifugal Pump. Install the pump
but do not start the drive motor until ready to prime the
circuit.
Note: It is recommended that an arterial line filter or similar air barrier device be
used in the extracorporeal circuit. Beginning the priming procedure with a crystalloid
solution will improve visibility and facilitate bubble removal.
To prime the centrifugal pump:
1. Clamp the pump inlet while priming the reservoir.
2. Unclamp the inlet line slowly and gravity prime the centrifugal pump so
that air exits upward through the pump outlet line. The pump may be
removed from the drive motor for debubbling. Clamp the pump outlet line
after the pump is completely primed. The primed pump may now be used
in priming the rest of the circuit.
3. Prime the rest of the circuit, unclamping the pump outlet line as necessary.
When stopping flow, clamp the appropriate lines (particularly the pump
outlet line and the patient venous line) to prevent depriming this pump.
4. Remove any air from the pump prior to perfusion. Stop the pump, clamp
the lines (particularly the pump outlet line), and purge the air back to
the reservoir by tipping and tapping. Debubble the circuit by recirculation
as necessary.
5. If a roller pump is used instead of the manual drive unit as standby
equipment, use tubing specified for roller pumps. Insert the centrifugal
pump inlet or outlet tubing into the roller pump, check that the pump
operates properly, and verify the proper flow direction through the roller
pump. Then adjust the pump so that the tubing is totally unoccluded or
remove the tubing from the pump.
* For additional information, see “Automatic Shutoffs on Centrifugal Heart-Lung Bypass Pumps,” Technology for
Perfusion, published by ECRI, September 1988, 1(2):6-7.
CAUTION: Failure to have a backup pumping method, either a standby roller
pump or a manual drive unit, may lead to severe patient injury or death. It is
highly recommended that a backup pumping method and protocol are prepared.
It is recommended that a one-way valve to prevent retrograde flow in the arterial
line be used in the cardiopulmonary bypass circuit.
CAUTION: Do not operate the centrifugal pump when unprimed as operating
the pump in a “dry” state may damage the internal seal.
CAUTION: Monitor the centrifugal pump and replace it if there are fluid leaks,
noisy operation, or blood in the rear chamber. Blood in the rear chamber will
damage the pump bearings and cause the pump to eventually fail.
CAUTION: When located on the inlet side of the centrifugal pump, automatic
ball-type shutoff valves (used to prevent gas emboli from entering the arterial
line) may seat inadvertently and stop flow.* Follow manufacturer’s instructions
for placement of valves.