Radical-7 Warnings and Cautions
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• Low arterial oxygen saturation levels including altitude induced
hypoxemia
• Elevated total bilirubin levels
• Motion artifact
• SpCO readings may not be provided if SpO2 readings are less
than 90%
• SpCO readings may not be provided if SpMet readings are
greater than 2%
Warning: SpCO readings may not be provided if there are low arterial
saturation levels or elevated methemoglobin levels.
Warning: If any measurement seems questionable, first check the
patient’s vital signs by alternate means and then check Radical-7 for
proper functioning.
Warning: Inaccurate respiration rate measurements may be caused by:
• Improper sensor application
• Low arterial perfusion
• Motion artifact
• Low arterial oxygen saturation
• Excessive ambient or environmental noise
Warning: Inaccurate ORI readings may be caused by:
• Improper sensor application
• Intravascular dyes such as indocyanine green or methylene blue
• Externally applied coloring and texture such as nail polish, acrylic
nails, glitter, etc.
• Elevated levels of bilirubin
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