Nihon Kohden Corporation ZM-541PAA Benutzerhandbuch

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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.
• 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.

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