User's Manual

Radical-7 Appendix: Best Practices for Comparisons to Reference Measurements
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• Secure sensor cable to patient’s arm with tape.
• Instruct subjects to remain still without any sensor movement.
• Connect sensor cable to device without pulling on sensor.
• Wait until SpHb measurement is stable (one minute) before recording SpHb
values.
• Note any Low SIQ message that displays during measurement.
 Blood sampling and laboratory analysis:
• Record site of blood draw.
• Document exact time blood withdrawn from patient.
• When taking blood sample from arterial line, remove adequate dead space to
ensure blood sample is not diluted with solution to keep arterial line open.
When IV line set-up includes stopcocks, ensure that no fluid is infused
through the line from which you are taking the blood. Draw blood directly
into the vacutainer, if possible.
• Mix blood carefully after filling the vacutainer by rotating it gently at least 10
times. (A rotation is one turn of the tube upside down and then right side
up.)
• All blood samples must be analyzed on the same calibrated laboratory
hematology analyzer (Coulter, Sysmex, or equivalent) to avoid variation
induced by the use of multiple laboratory devices.