Terumo CDI 550, Operator'S Manual

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installing disposables chapter 6 6-5 6-4
Warning
• Prime solutions containing acetate ions such as Isolyte-S, Normosol-R,
or Plasmalyte-A can cause damage to the PCO
2
sensor. If the pH
channel reads less than 7.00 after the sensor is placed in the circuit,
you should either recirculate the prime solution using a CO
2
-free
sweep gas or add sufficient buffer to raise the pH of the prime above
7.00. Exposure to acetate-containing prime solutions below pH 7.00 for
longer than a few minutes can cause significant PCO
2
inaccuracy.
• Make sure all luer lock connections are securely tightened before
priming the shunt/purge line. Connections that aren’t secure can
result in a leak.
• Exposure of the shunt sensor to prime solutions and/or blood with pH
less than 7.0 or greater than 7.8 pH units can interfere in the accurate
measurement of potassium.
• Exposure of the shunt sensor to prime solutions and/or blood with
sodium measurement less than 120 or greater than 160 mEq/L can
interfere in the accurate measurement of potassium.
• The presence of air bubbles in CDI Shunt Sensors can affect the
results. Intermittent bubbles, once removed from the CDI Shunt
Sensor, will not affect its long-term accuracy.
5 Adjust the monitor cabling to clear excess cable from the work area.
Installing a CDI Shunt Sensor into the Shunt
Bypass Line
Warning
• Do not allow the CDI Shunt Sensor to dry out. Make sure the circuit
has prime fluid in it before attaching the Shunt Sensor. Exposure to
air for more than a few minutes can damage the sensor and cause
inaccurate results.
Caution
• Do not remove the CDI Shunt Sensor from the cable-head to make sensor
connections.
1 Stop the pump and/or clamp off the Shunt Bypass Line.