This content applies to Kenek Edge and Kenek O2 pulse oximeters.

 

What are some tips for getting accurate measurements?

A pulse oximeter shines light through the tissue of a finger to measure SpO2 and heart rate. It requires a clean sensor and good blood flow in the fingertip. The signal strength indicator needs to be as high as possible. See the Signal Quality Index (SQI) topic for more information. 


What are some tips to resolve signal strength issues?

  • Ensure the finger is aligned with the finger outline on the top of the sensor.
  • Ensure the finger is inserted correctly and completely into the sensor. The tip of the finger should be touching the stop inside the sensor.
  • Ensure the sensor is put on a finger with free blood flow, not restricted by a blood pressure cuff on the arm or other instruments.
  • Select a testing finger that has good blood flow, limited bruising, and no obstructions such as nail polish or artificial nails.
  • The finger should be cleaned of dirt and dry before placing in the sensor. If the signal is poor, the finger may be cold. Rub it or warm it, then insert it again into the sensor.
  • Do not remove the finger from the sensor during testing.
  • Accuracy is impacted by movement. Limit movement while using the pulse oximeter.  It will not present measurements if it detects movement.