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Note: Before each test, clean the measured finger and the
silicon part of the Oximeter that contacts the finger with
medical alcohol. The silicon is non-toxic, soft and
hypoallergenic.
3.4.4 Reading Measured Data of Oxygen Saturation and Pulse
Rate from the OLED Screen
The INV-430J/PE pulse oximeter comes with anti-motion
technology so that the pulse oximeter can function even
if there is finger movement. However, for best results, try
11
2.4
Limitations
Spot check pulse oximeter takes 1-2 reading every second and
takes an average of 3-6 readings before displaying the result.
Hence, you will have to wait at least 3-6 seconds before a result
will be displayed on the monitor. If the pulse oximeter fails to
detect blood flow for the first few seconds, then the results will
be delayed accordingly.
The pulse oximeter does not work for people with naturally small
fingers or low peripheral blood flow. This is because the pulse
oximeter would not have enough blood to take a measurement.
Please note that prolong use of a pulse oximeter, hypotension,
vasoconstriction, hypothermia and certain medications can lead
to low or restricted blood flow. Nail polish can also impede the
pulse oximeter from taking a reading.
Finally, it is generally accepted that the saturation percentage is
unreliable on the steep part (around 60 mm Hg) of the
oxyhemoglobin dissociation curve.
