11-19
11.4.2 Precautions
WARNING
z Pulse oximeter can overestimate the SpO2 value in the presence of Hb-CO,
Met-Hb or dye dilution chemicals.
z ES (Electrosurgery) equipment wire and SpO2 cable must not be tangled up.
Carefully route patient cabling to reduce the possibility of patient entanglement
or strangulation.
z Do not use this instrument and the sensors during magnetic resonance imaging
(MRI). Induced current could potentially cause burns. The monitor may affect
the MRI image, and the MRI unit may affect the accuracy of the oximetry
measurements.
z Do not put the SpO2 sensor on the limb with arterial catheter or venous syringe.
z Do not use the supplied sterile SpO2 sensors if the packaging or the sensor is
damaged. Return them to the distributor or manufacturer.
z Do not perform SpO2 monitoring and NIBP measurements on the same arm
simultaneously. Obstruction of blood flow during NIBP measurements may
adversely affect the reading of the SpO2 value.
z Before performing the testing, check the sensor cable. After unplugging the
SpO2 sensor cable from the socket, the system shall display the prompt
information "SPO2 SENSOR OFF" and give the audible alarm.
z Prolonged continuous monitoring may increase the risk of undesirable changes
in skin characteristics, such as irritation, reddening, blistering or burns. Inspect
the sensor site every two hours and move the sensor if the skin quality changes.
Change the application site every four hours. For neonates or patients with poor
peripheral blood circulation or sensitive skin, inspect the sensor site more
frequently.
NOTE
z Place the SpO2 sensor cable at the backside of the patient hand. Make sure the
fingernail is just opposite to the light emitted from the sensor.
z SpO2 waveform is not proportional to the pulse volume.
11.4.3 Monitoring Procedure
Follow the procedure as below:
1. Power on the monitor.
2. Attach the sensor to the proper site on the patient.
3. Plug the connector of the sensor extension cable into the SpO2 connector on monitor.
The process of SpO
2
plethysmogram measurement is generally the same. But the SpO
2
sensor
selection and placement depend on the patient type. When choosing a site for a sensor, refer to
the directions for that sensor.
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