FM5000C - FM5000PLUS
Maternal/Fetal Monitor
17.5 Measurement Limitations
During operation, the following factors can affect the accuracy of SpO2 measurement :
High-frequency radio interference, for instance, interference self-generated from the host system or
from electrical scientific instruments connected to the system.
During magnetic resonance imaging scanning (MRI), do not use the photoelectric oximeter and
oxygen sensor, since induced currents may cause burning.
Intravenous dye.
Patient’s excessive movement.
External radiation.
Improper installation of sensor or improper contact position with the object .
Sensor’s temperature (optimal temperature should be among 28 ℃ - 42 ℃) .
The sensor is placed on the limbs with a blood pressure cuff, arterial catheter, or the pipeline of
body cavity.
The concentrations of non-functional hemoglobin such as carboxyhemoglobin (COHb) and
methemoglobin (MetHb) etc.
Extremely low degree of blood-oxygen saturation.
The measured area has poor circulation.
Syndromes such as shock, a Extreme low degree of blood-oxygen saturation, .anemia or low
temperature etc and application of vasoconstrictor drugs can reduce blood flow to the level of not
being able to be measured.
Measurement also depends on both the oxyhemoglobin and reduced hemoglobin’s absorption of
specific wavelengths of light. If any other factors absorb the same wavelength, they will generate
false measurement, lower SpO
2
values. These factors are as follows: carbonization of hemoglobin,
methemoglobin, methylene blue , indigo rouge.It is recommended to use only the SpO
2
sensor
described in the accessories.
17.6 SpO
2
Settings
17.6.1 Setting theIntelligent Alarm
1. Select SpO
2
parameter area and the [SpO2 SETUP] menu will be dispalyed;
2. Select [SAT SECOND]
3. Select [10], [25], [50], [100]seconds or [Disable];
NOTE: This feature is only available on NELLCOR SpO2.
Intelligent alarm is designed to reduce false alarms, help the doctor grasp more accurate and timely changes
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