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boxyhaemoglobin (COHb), methaemoglobin (MetHb) and sulfhaemoglobin (SuHb)), but the testee may appear hypoxia,
it is recommended to perform further assessment according the clinical situations and symptoms.
• Pulse oxygen has only reference signicance for anemia and toxic hypoxia, as some patients with severe anemia still
show better pulse oxygen measurements.
• Measurement accuracy can be affected by the interference of electrosurgical equipment.
• Do not install the SpO2 probe on an extremity with arterial catheter or receiving intravenous injection.
• Do not perform SpO2 measuring and NIBP measuring on same limb at one time, because obstruction of blood ow during
NIBP measuring may adversely affect the reading of SpO2 value.
• Excessive movement (active or passive) of the subject or severe activity can affect the measurement accuracy.
• Excessive ambient light may affect the measuring results, such as surgical light (especially xenon light sources), bilirubin
lamp, uorescent lamp, infrared heater and direct sunlight, etc. In order to prevent interference from ambient light, make
sure to place the probe properly and cover the probe with opaque material.
• The measured value may be inaccurate during debrillation and in a short period after debrillation, as the SpO2 probe
not have debrillation-proof function.
• The person who is allergic to silicone, PVC, TPU, TPE or ABS can not use this device.
• For some special patients, it should be a more prudent inspecting in the measurement part. The probe can not be clipped
on the edema and tender tissue.
• Do not stare at the luminescent component directly when the device is turned on (infrared light is invisible), even if for
maintenance purpose, or it may have bad inuence to the eyes.
• Uncomfortable or painful feeling may appear if using the SpO2 probe ceaselessly, especially for the microcirculation
barrier patients. It is recommended that the measurement should not be taken at the same position for over 2 hours. Con-
tinuous, long measurements may increase the risk of unwanted changes in the skin characteristics, such as exceptionally
sensitive, reddish, blistering or oppressive necrosis, especially for neonates or the patients with perfusion disorder and
change or immature skin form. It should be paid special attention to check the placement position of the probe according
to the skin quality change, correct optical alignment and attachment method. Check the attachment position periodically
and change it when the skin quality decreases. A more frequent check may be required due to the difference of patient’s
state.
• Some models of functional tester or patient simulator can measure the accuracy of the device that reproduces the cali-
bration curve, but it can not be used to evaluate the accuracy of this device.
ENGLISH
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