•When influenced electromagnetically by other electronic de- vices (e.g. near electrical appliances like TV, medial device)

•When a mobile telephone is used during measurement

•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 finger nails are polished

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

Difference from the SaO2 value to displayed value

<Table 1>

<Table 2>

Foreword

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%.

•Do not immerse the probe, the extension cable or the con- necter of PULSOX-300i in disinfectant. Doing so may cause a malfunction.

•When using the Extension Cable EC-300, fit and secure ca- bles so they are not too loose or too tight.

•Before connecting to a personal computer, remove the Pulsox from the patient.

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