Foreword, When fi nger nails are polished – Konica Minolta PULSOX 300 User Manual

Page 11

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9

Foreword

Difference from the SaO

2

value to displayed value

<Table 1>

<Table 2>

SaO

2

HbCO

SaO

2

Methemoglobin

1%

5%

10%

1%

5%

10%

50

50

70

70

90

90

100

100

Measured value is always
lower than the actual value.

Displayed value is sometimes
higher than the actual value if

SaO

2

is around 50%.

-0.1

-0.7

-1.5

+0.2

+1.3

+3.2

-0.2

-0.8

-1.6

-1.5

-6.0

-9.6

-0.1

-0.7

-1.5

-0.6

-2.3

-3.2

-0.2

-0.8

-1.7

-1.8

-7.5

-12.2

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

When fi nger nails are polished

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

these hemoglobins.

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