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B.The finger should be in a proper position (see the attached illustration as
Figure 3 for reference), or else it may result in inaccurate measure.
C.The ray between luminescent tube and photoelectric receiving tube must
get across subject’s arteriole.
D.The oximeter should not be used at a location or limb tied with arterial
canal or blood pressure cuff or receiving intravenous injection.
E.Ensure nothing, such as a plaster, can impede the light passage., or else
it may result in inaccurate measure of SpO
2
,pulse rate and PI.
F.Excessive ambient light may affect measurement accuracy. It includes
fluorescent lamp, dual ruby light, infrared heater, direct sunlight and etc.
G.Intense activity of the subject or extreme electrosurgical interference
may also affect the accuracy.
H.Testee can not use enamel or other makeup.
I.Please clean and disinfect the device after operating according to the
User Manual (7.1).
6.3 Clinical restrictions
A. As the measure is taken on the basis of arteriole pulse, substantial
pulsating blood flow of subject is required. For a subject with weak pulse
due to shock, low ambient/body temperature, major bleeding,or use of
vascular contracting drug, the SpO
2
waveform (PLETH) will decrease. In
this case, the measurement will be more sensitive to interference.
B. For those with a substantial amount of staining dilution drug (such as
methylene blue, indigo green and acid indigo blue), or carbon monoxide
hemoglobin (COHb), or methionine (Me+Hb) or thiosalicylic hemoglobin,
and some with icterus problem, the SpO
2
determination by this device may
be inaccurate.
C. The drugs like dopamine, procaine, prilocaine, lidocaine and butacaine
