Gima M34266 Manual De Uso Y Mantenimiento página 18

ENGLISH 18
Oppositely, pulse oxygen oximeter measures functional O Hb saturation:
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Functional O Hb saturation = [O Hb / (RHb + O Hb)] × 100
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Present SpO oximeter transmits light of two wavelengths only, red light
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(wavelength 660 nm) and infrared (wavelength 940 nm), to differentiate
HbO from HbR. One side of the sensor contains two LEDs, and the other
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side contains a photoelectric detector. SpO oximeter measures HbO
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saturation in the blood by the light plethysmograph when the pulse beats.
The result is quite precise when HbO saturation is over 70% ~ 95%.
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2.5 Caution
A. The uncomfortable or painful feeling may appear if using the device ceaselessly,
especially for the microcirculation barrier patients. It is recommended that the
sensor should not be applied to the same finger for over 2 hours.
B. For the individual patients, there should be a more prudent inspecting
in the placing process. The device can not be clipped on the edema and
tender tissue.
C. The light (the infrared is invisible) emitted from the device is harmful
to the eyes, so the user and the maintenance man, can not stare at the light.
D. Testee can not use enamel or other makeup on the finger.
E. Testee's fingernail can not be too long.
F. The finger should be placed properly, or else it may cause inaccurate
measurement.
G. Do not shake the finger and keep at ease during using.
H. Do not put wet finger directly into oximeter.
I. The SpO sensor should not be used at a location or limb tied with
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arterial canal or blood pressure cuff or receiving intravenous injection.
L. Do not fix the SpO sensor with adhesive or else it may result in venous
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pulsation and inaccurate measure of SpO .
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M. Make sure the optical path is free from any optical obstacles like
rubberized fabric.
N. Excessive ambient light may affect the measuring result. It includes
fluorescent lamp, dual ruby light, infrared heater, direct sunlight and etc.
O. Strenuous action of the subject or extreme electrosurgical interference
may also affect the accuracy.