5. Tips on using a pulse oximeter
Finger probe use:
Ensure the nails are not varnished as this will affect the light transmission through the finger.
Rest the hand on the chest at heart level - do not hold it in the air as the movement may interfere with the reading.
The lights and detectors might be susceptible to external light interference so ensure the finger is fully inserted into the oximeter sensor and that it is shielded from external direct light. Most oximeters have a dark shroud which will prevent external light entering.
General tips:
Take a resting reading for a minimum of 5 minutes
If the finger being tested is especially cold or you have low blood pressure or circulatory problems, there will be poor "perfusion" (blood supply).
If this applies, warm and rub the skin first.
If testing children or infants, ensure you use the correct size probe.
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