Product Manual

M3A Vital Signs Monitor User Manual SpO

Monitoring (Optional)

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9.3 Monitoring Procedure

SpO

plethysmogram measurement

1. Connect the SpO

sensor and extension cable to the SpO

sensor port of monitor.

2. Switch on the monitor.

3. Enter Patient Setup menu to set Patient Type as required.

4. Attach the sensor to the appropriate site of the patient finger.

5. The measured SpO

is displayed on screen.

Figure 9-1 Mounting of the Sensor

9.4 Limitations of Measurement

In operation, the accuracy of oximetry readings can be affected by:

z High-frequency electrical noise, including noise created by the host system, or noise from

external sources, such as electrosurgical apparatus, which is admitted by the host system.

z Do not use monitor and oximetry sensors during magnetic resonance imaging (MRI)

scanning. Induced current could potentially cause burns.

z Intravenous dye

z Excessive patient movement

z Outside ray radiation

z Improper sensor application

z Sensor temperature (maintain between +28 °C and +42 °C for best operation )

z Placement of the sensor on an extremity that has a blood pressure cuff, arterial catheter, or

intravascular line

z Significant concentration of dysfunctional hemoglobin, such as carboxyhemog-lobin and

methemoglobin

z Low SpO

z Circular perfusion is not good for test part

z The dissipation power is less than 50 μW, when the sensor temperature is higher than +41 ℃,

you should shorten the measuring time.