Sensor Clip Attachment - Fresenius Medical Care CRIT-LINE III User Manual

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2.3 Sensor Clip Attachment

When properly attached, the sensor clip will lock into place on the blood chamber. It
can be attached in either direction on the blood chamber. Ensure that it is secure
prior to proceeding.
NOTE: The sensor clip must be attached before monitoring takes place (i.e. before
pressing START RUN). Care must be taken to ensure that the sensor clip is properly
in place before attempting monitoring in order to ensure accuracy of the initial
hematocrit reading.
The CLM III's sensor clip is continuously scanning for blood. In order for the
sensor to determine a true starting hematocrit value, which initiates the processing of
data, blood must be flowing throughout the dialyzer circuit and the blood pump must
be running. These conditions must be met prior to selecting START RUN.
If START RUN is selected prior to placing the sensor clip on the blood chamber, or
if the blood circulating within the dialyzer is still mixing with saline, the initial
hematocrit will be diluted and the hematocrit value will be lower than the "true"
circulating hematocrit. Starting while the sensor clip is still on the verification filter
will reflect the hematocrit and oxygen control values as the starting values.
The initial hematocrit value is the starting point from which all blood volume
calculations are made. Therefore, it is essential that the first hematocrit value
measured by the CLM III be indicative of the circulating blood. To ensure an
accurate initial Hct reading, visually verify proper blood flow in the dialyzer circuit
prior to pressing START RUN. (See Section 4-Ending the Run, for information on
when to remove the Sensor Clip).
Set Up Procedures
2-3