Konica Minolta 300 instruction manual Difference from the SaO2 value to displayed value

When influenced by abnormal hemoglobin like carbon monoxide hemoglobin (HbCO) and methemoglobin When pigments such as cardiogreen, intravascular dyes and indocyanine greenare present in the blood

When fi nger nails are polished

Tables 1 and 2 below show the errors which may occur due to these hemoglobins.

Foreword

Difference from the SaO2 value to displayed value

<Table 1> <Table 2>

SaO2		HbCO
	1%	5%	10%
50	-0.1	-0.7	-1.5
70	-0.1	-0.7	-1.5
90	-0.2	-0.8	-1.6
100	-0.2	-0.8	-1.7

Measured value is always lower than the actual value.

SaO2	Methemoglobin
	1%	5%	10%
50	+0.2	+1.3	+3.2
70	-0.6	-2.3	-3.2
90	-1.5	-6.0	-9.6
100	-1.8	-7.5	-12.2

Displayed value is sometimes higher than the actual value if SaO2 is around 50%.

9