User's Manual

11
Chapter15 SpO
2
Measurement Method
1. Attach the sensor to the appropriate site of the patient finger as following figure.
2. Plug the connector of the SpO
2
probe cable into the USB socket in the lower right of the
device. The main interface will switch to SpO
2
interface. This operation brings no affection to
other functions.
Measurement Limitation
During operation, the accuracy of oximeter readings can be affected by:
 High-frequency electromagnetic interference such as electrosurgical apparatus connected to
the system;
 Intravenous dyestuff;
 Excessive patient movement;
 Outside ray radiation;
 Improper SpO
2
probe installation or incorrect contact position of the patient;
 SpO
2
probe temperature (optimal temperature between 28°C and 40°C)
 Place the SpO
2
probe on an limb that has a blood pressure cuff, arterial catheter, or
intravascular line.
 Concentrations of dysfunctional hemoglobin, such as carboxyhemoglobin(COHb) and
methemoglobin(MetHb);
 SpO
2
is too low;
 Bad circular injection of the part being measured;
 It is required to use SpO
2
probe which is provided by our company, contact with our sale
department when changes SpO
2
probe.
Place SpO
2
probe