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Clamp the venous line leading from the patient.
Clamp the arterial line a few centimetres away
from the oxygenator arterial outlet port.
4) CHECK THE HEAT EXCHANGER
Verify again the integrity of the heat exchanger,
paying particular attention to possible water
leaks.
5) PRIME THE VENOUS RESERVOIR
Secure all the aspiration lines with clamps.
Fill the cardiotomy/venous reservoir with
sufficient liquid to ensure that the intended
hematocrit is obtained, taking into account that:
• The static priming volume of the oxygenator is
130 ml.
• The 3/8" tube capacitty is 72 ml/m.
Clamp the cardiotomy/venous reservoir outlet.
6) CIRCUIT PRIMING
WARNINGS
• The pressure in the blood compartment of
the oxygenator module must not exceed 750
mmHg (100 KPa).
• Do not occlude the gas escape port to avoid
that pressure achieved into the gas side
compartment becomes higher than pressure
into the blood site compartment.
• The pressure in the blood compartment
must always be higher than that in the
gas compartment. This is to prevent the
formation of gas emboli in the blood
compartment.
• It is always advisable to use a pre-bypass
filter during priming.
Remove the pump segment of the arterial pump
head and position it at the same height as the
cardiotomy/venous reservoir.
Slowly open the clamp at the reservoir outlet
and fill the tube, gradually lowering it with
respect to the level in the cardiotomy/venous
reservoir, so that it is completely filled and all
the air is sent to the oxygenator.
The oxygenator module is hence completely
filled by gravity. When TRILLY PAEDIATRIC AF
is full, position the pump segment in the arterial
pump.
7) OPEN THE VENOUS AND ARTERIAL LINES
Remove the clamps from the venous and arterial
lines and increase the flow rate to 1000 ml/min.
8) OPEN THE PURGE LINE
Check that the purge line is connected to the
turret of the cardiotomy/venous reservoir.
Increase the arterial pump speed to the
maximum flow rate.
Open the purge line of the oxygenator module in
order to evacuate the air towards the reservoir.
Ensure the filling and the de-bubbling of the
cardioplegia line.
9) PURGE THE AIR CONTAINED IN THE CIRCUIT
During this phase it is necessary to tap the
entire circuit in order to facilitate the removal of
microbubbles from the tube walls. After some
minutes in which the flow is maintained at a high
rate, all air will be evacuated.
10) PRIME THE SAMPLING MANIFOLD
Prime the sampling lines (arterial/venous)
until all the air has been evacuated. Turn the
stopcock selectors of the sampling manifold so
as to fill automatically the arterial and venous
line.
11) CLOSE THE PURGE LINE / PURGING /
RECIRCULATION LINE
After 3-5 minutes of circulation at high flow, all
the residual air will have been evacuated and the
purge line can be closed.
The particular configuration of the upper potting
(inclined potting) will allow all the air contained
in the upper area of the oxygenator module to
automatically evacuate.
12) CLOSE THE VENOUS AND ARTERIAL LINES
After having verified the absence of air inside the
circuit, stop the pump and clamp the venous and
arterial line.
WARNINGS
• Do not use pulse flow during priming.
• Sudden changes in flow rate during priming
can pull air across the membrane into the
blood pathway.
• Check the correct dosage of anticoagulant in
the system before starting the bypass.
• EUROSETS recommends using the pump
speed regulator to reduce or slowly stop the
arterial flow.
• Do not use the pump on/off switch until the
pump speed is zero.
• Do not turn off the heater-cooler.
• If the cardioplegia line has been connected,
make sure that all the air has been
evacuated.
• Do not apply negative pressure to the
coronary outlet.
• Negative
pressures
in
the
blood
