Terumo Advanced Perfusion System 1 Operator's Manual page 178

Roller Pumps
See the Resolving Pump Jam section for instructions regarding Pump Jam errors.
If an unexpected pump stop occurs when the pump is used for arterial flow, a
temporary interruption in arterial blood flow will occur. A number of variables influence
patient risk including the duration of the pump stop, the patient's status, and the
patient's temperature.
WARNING: If tubing is improperly installed or over-occluded when using a roller
pump for cardioplegia delivery, a Pump Jam condition may occur. A Pump Jam
condition causes the pump to stop.
See the Resolving Pump Jam section for instructions regarding Pump Jam errors.
If an unexpected pump stop occurs when the pump is used for cardioplegia delivery,
the delivery of a dose of cardioplegia may be delayed. The risk to patient is difficult to
determine because of the number of variables attendant during cardioplegia delivery,
including, but not limited to, surgeon technique, type of procedure, time since last
dose, type and temperature of cardioplegia solution, condition of the myocardium,
and other patient co-morbidities. Inadequate myocardial protection may result in
various levels of myocardial dysfunction.
CAUTION: Do not adjust the rollers of the occlusion mechanism past the limits
of its travel (which, when reached, is indicated by increased resistance on the
occlusion knob) as this may over-tighten the occlusion mechanism and prevent
its release. If the occlusion mechanism is over-tightened (in either direction) and
cannot be released by turning the occlusion knob in the opposite direction, then
use another pump and call for service.
To set the pump occlusion:
1. Turn the occlusion knob
counterclockwise until the tube
is compressed against the pump
raceway.
2. Place the inlet of the tubing into
a container of crystalloid priming
solution. Hold the outlet end vertically
above the pump head. Using the
hand crank, pump a 40 in. (1,0 m)
column of solution up the tubing as
measured from the solution level in
the reservoir.
3. With one roller occluding the tubing,
turn the occlusion knob clockwise
allowing the solution level to drop.
4. While the level drops, turn the
occlusion knob counterclockwise until
the rate of fall is approximately 1 in.
(2,5 cm) per minute.
5. If the rate of fall is slower than approximately 1 in. (2,5 cm) per minute, turn
the occlusion knob one revolution clockwise to back the rollers away from the
raceway and start again.
40 in. (1 m)
40" (1 m)
5-11
Occlusion knob
Occlusion Adjustment Knob