User's Manual

Radical-7R Pulse CO-Oximeter Operator’s Manual 4-5
4
Operation
caused by fluctuations in the oxygen saturation, blood concentration and perfusion. Inaccurate
measurements may be caused by:
■ Intravascular dyes such as indocyanine green or methylene blue.
■ Low arterial perfusion.
■ Low arterial oxygen saturation levels.
■ Elevated Total Bilirubin levels.
■ Motion artifact.
NUMERIC DISPLAY - SpHb
A stable SpHb reading is associated with correct sensor placement, small physiological changes
during the measurement and acceptable levels of arterial perfusion at the measurement site.
Physiological changes at the measurement site are mainly caused by fluctuations in the oxygen
saturation, blood concentration and perfusion. Inaccurate measurements may be caused by:
■ Intravascular dyes such as indocyanine green or methylene blue.
■ Low arterial perfusion.
■ Low arterial oxygen saturation levels.
■ Elevated Total Bilirubin levels.
■ Motion artifact.
NUMERIC DISPLAY - SPOC
A stable SpOC reading is associated with stable readings for both SpO
2
and SpHb which
comes with correct sensor placement, small physiological changes during the measurement
and acceptable levels of arterial perfusion at the measurement site. Physiological changes
at the measurement site are mainly caused by fluctuations in the oxygen saturation, blood
concentration and perfusion. Inaccurate measurements may be caused by:
■ Intravascular dyes such as indocyanine green or methylene blue.
■ Low arterial perfusion.
■ Low arterial oxygen saturation levels.
■ Elevated Total Bilirubin levels.
■ Motion artifact.
■ Elevated levels of carboxyhemoglobin.
■ Elevated levels of methemoglobin.
■ Severe anemia may cause erroneous SpOC readings.
NUMERIC DISPLAY - SpHct
A stable SpHct reading is associated with stable readings for SpHb which comes with correct
sensor placement, small physiological changes during the measurement and acceptable levels
of arterial perfusion at the measurement site. Physiological changes at the measurement site
are mainly caused by fluctuations in the oxygen saturation, blood concentration and perfusion.
Inaccurate calculations may be caused by
:
■ Intravascular dyes such as indocyanine green or methylene blue.
■ Low arterial perfusion.
■ Low arterial oxygen saturation levels.
■ Elevated Total Bilirubin levels.
■ Motion artifact.