Terumo CDI 550 Operator's Manual page 72

Completing Calibration of the CDI System 550
measurements
At the beginning of a case, you must complete calibration of all measurable blood param-
eters by comparing them to a laboratory measurement done on a blood sample. The values
are dimmed on the screen until an initial in vivo recalibration is done.
Note: The terms "recalibrating the monitor" and "in vivo recalibration" both refer to the same
process and are used interchangeably throughout this manual.
Warning
Measured values prior to initial in vivo calibration may not be accurate.
Do not use values prior to initial in vivo calibration for patient management.
Note: To differentiate between "dimmed" and "normal" values on the screen, compare the
font shades of grey between the numeric values for parameters such as pH or PCO
the numeric values for temperature. If the font shade of grey for the numeric values of pa-
rameters is lighter than the font shade of grey of numeric temperature, then the values are
`dimmed' which means that an initial in vivo recalibration has not yet been performed. If the
font shades of grey of the values are the same, then an initial in vivo recalibration has been
performed. The figure on page 7-2 shows that the CDI Monitor has not gone through an
initial in vivo recalibration.
Note: If you don't have time to do a full gas calibration, the K
from the pouch should still be entered.
Note: For calibrating the potassium sensor, and to ensure accuracy of the potassium value,
the pH of the blood must be between 7.0 and 7.8 on the CDI System 550.
To complete calibration of all measurable blood parameters, follow these steps:
1 When the values on the monitor have stabilized, press the "store" key.
Caution
• For the best comparison with your laboratory, press the "store" key only after the
circuit has been stabilized for approximately five minutes (when there have been
no changes in temperature, Fraction of Inspired Oxygen in a gas mixture (FiO
gas or blood flows, or other parameters that would cause changes in displayed
values). If the "store" key is pressed and/or the recalibration blood sample is drawn
during periods of significant temperature or gas change, the system may not meet
the system accuracy limits found in Appendix B.
2 Immediately draw a blood sample from a sampling port close to the
shunt sensor.
Caution
• Draw the blood sample as close as possible to when the "store" key is pressed to
ensure the blood parameter values are calibrated as accurately as possible.
3 Send the sample for a laboratory measurement of all blood parameters.
Note: If the laboratory blood gas values are 37°C, the monitor must be in 37°C mode. If the
laboratory gas values are at patient temperature, the monitor must be in actual (@) mode.
The stored temperature mode can be switched in the recalibration screen, however the
temperature value used in the actual temperature mode cannot be adjusted.
and
2
+
(Potassium) calibration value
),
2
monitoring a patient 7-3