4. Single use accessories should never be re-used.
5. Only use SpO sensors specified by the manufacturer. Other SpO sensors may cause improper perfor-
mance.
6. Unplug the sensor from the monitor before cleaning or disinfecting to prevent sensor or monitor from
being damaged, and to prevent user under safety situation.
7. Alarm must be set up according to di erent situation of individual patient. Make sure that audio sound
can be activated when alarm occurs.
Notes:
1. Optical cross talk can occur when two or more sensors are located in adjoining areas. It can be eliminated
by covering each site with opaque material. Optical cross talk may adversely a ect the accuracy of the
SpO readings.
2. Obstructions or dirt on the sensor's red light or detector may cause a sensor failure. Make sure there are
no obstructions and the sensor is clean.
3. For routine equipment maintenance, please refer to the service procedures at the associated section as
indicated in the manual.
4. As to the other concerns for attention, please carefully look through the specific chapter in this instruction.
Inaccurate measurements may be caused by:
1. Significant levels of dysfunctional hemoglobin (such as carbonyl - hemoglobin or methemoglobin);
2. Intravascular dyes such as indocyanine green or methylene blue;
3. High ambient light. Shield the sensor area if necessary;
4. Excessive patient movement;
5. High-frequency electrosurgical interference and defibrillators;
6. Venous pulsations;
7. Placement of a sensor on an extremity with a blood pressure cu , arterial catheter, or intravascular line;
8. The patient has hypotension, severe vasoconstriction, severe anemia, or hypothermia;
9. The patient is in cardiac arrest or is in shock;
10. Fingernail polish or artificial fingernails;
11. Weak pulse quality (low perfusion);
12. Low hemoglobin;
1.5 Electromagnetism Interference
This oximeter is designed and tested in compliance with the EMC standard, complying with the international
standard for the EMC of the electronic medical device – IEC 60601-1-2. However, because of the prolifera-
tion of radio frequency transmitting equipment and other sources of electrical noise in the health-care and
home environments (e.g. cellular phones, mobile two-way radios, electrical appliances) it is possible that
high levels of such interference due to close proximity or strength of a source, may result in disruption of
performance of this device.
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