19
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 the measure result. It includes fluores-
cent lamp, dual ruby light, infrared heater, direct sunlight and etc.
G
Exquisite action 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 pulsat-
ing 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 measure will be more sensitive to interference.
B
For those with a substantial amount of staining dilution drug (such as meth-
ylene blue, indigo green and acid indigo blue), or carbon monoxide he-
moglobin (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 may
also be a major factor resulted in serious error of SpO
2
measure.
D
As the SpO
2
value serves as a reference value for judgment of anemic an-
oxia and toxic anoxia, some patients with serious anemia may also report
good SpO
2
measure.
7. MAINTENANCE, TRANSPORTATION
AND STORAGE
7.1 Cleaning and disinfecting
Using medical alcohol to disinfect the device, nature dry or clean it with clean
soft cloth.
7.2 Maintenance
A
Please clean and disinfect the device before use according to the User
Manual (7.1).
B
Please recharge the battery when the screen shows low power alarm infor-
mation.
C
Recharge the battery soon after the over-discharge. The device should be
recharged every six months when it is not regular used. It can extend the
battery life following this guidance.
