Nihon Kohden Corporation ZM-520PA Benutzerhandbuch

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Operator’s Manual  ZM-520PA/521PA/530PA/531PA

SpO

2

 measurement may be incorrect 

in the following cases.
•  When the patient’s 

carboxyhemoglobin or 
methemoglobin increases 
abnormally.

•  When dye is injected in the blood.
•  When using an electrosurgical unit.
• During CPR.
•  When measuring at a site with 

venous pulse.

•  When there is body movement.
•  When the pulse wave is small 

(insufficient peripheral circulation).

Check the circulation condition by 
observing the skin color at the 
measurement site and pulse waveform. 
Change the measurement site every 8 
hours for disposable probes and every 
4 hours for reusable probes (every 8 
hours for TL-631T series probe). The 
skin temperature may increase at the 
attached site by 2 or 3°C (4 or 5°F) 
and cause a burn or pressure necrosis. 
When using the probe on the following 
patients, take extreme care and 
change the measurement site more 
frequently according to symptoms and 
degree.
•  Patient with a fever
•  Patient with insufficient peripheral 

circulation

•  Neonate or low birth weight infant 

with delicate skin

When monitoring SpO

2

 of a patient 

who is receiving photodynamic therapy, 
the light from the finger probe sensor 
may cause a burn. Photodynamic 
therapy uses a photosensitizing agent 
that has a side effect of 
photosensitivity.

The SpO

2

 probe manufactured by Nihon 

Kohden have two wavelengths with peaks in the 
range of 650 and 950 nm. The maximum light 
intensity is less than 5.5 mW.

When not monitoring SpO

2

, disconnect 

the SpO

2

 cable from the transmitter. 

Otherwise, noise from the probe 
sensor may interfere and incorrect data 
is displayed on the screen.

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