Clinical Restrictions - PULOX PO-200A Mode D'emploi

3.2. Caution
1. The finger should be placed properly (see the attached illustration
of this manual, Figure 4), or else it may cause inaccurate
measurement.
2. The SpO2 probe and photoelectric receiving tube should be
arranged in a way with the subject's arteriole in a position there
between
3. The SpO2 probe should not be used at a location or limb tied with
arterial canal or blood pressure cuff or receiving intravenous
injection.
4. Make sure the optical path is free from any optical obstacles like
rubberized fabric.
5. Excessive ambient light may affect the measuring result. It includes
fluorescent lamps, dual ruby light, infrared heater, direct sunlight
and etc.
6. Strenuous action of the subject or extreme electrosurgical
interference may also affect the accuracy.
7. Testee can not use enamel or other makeup.

3.3. Clinical restrictions

A. As the measurements are 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 SpO2 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 SpO2 determination
by this monitor may be inaccurate.
C. The drugs like dopamine, procaine, prilocaine, lidocaine and
butacaine may also be a major factor blamed for serious error of SpO2
measure.
D. As the SpO2 value serves as a reference value for judgement of
Figure 1 Operating principle
EN