Welch Allyn 420 Series - Appendix A - SpO2 Sensors; Compatibility

Spot Vital Signs 55
Appendix A - SpO
2
Sensors
The Spot Vital Signs features sensors that are ideal for nearly every application. These sensors
include the infant sensor, the flex sensor, the finger clip sensor, the ear clip sensor, the reflec-
tance sensor, and 3 different flexi-form, single-patient use sensors. Each sensor is designed for a
specific site application, and specific patient size and weight range. When selecting sensors for
a particular application consider the following:
• The best performing sensor for most patients is an appropriately sized adhesive style sensor,
either reusable or single-patient use, located on the finger or toe.
• The finger clip sensor is recommended for spot checks or short term continuous
measurement. The finger clip sensor performs best for most patients when used on fingers
other than the thumb. The finger clip sensor is not recommended where motion is expected,
or for relatively long term measurement, i.e., greater than 10 minutes.
• Infant sensors are recommended for use on the big toe of infants larger than 2 kilograms in
weight. Use Hydrogel style double stick tape and an overwrap around the sensor when using
the reusable style sensor. The flexi-form sensor does not require the use of additional tape
strips or the overwrap.
• The reflectance and ear clip sensors generally do not perform as well as sensors located on
the finger or toe. They are not recommended for applications where the best possible SpO
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accuracy is important. Use the reflectance and ear clip sensors when fingers and toes are
not suitable, as with peripheral shut down, or when measuring central body perfusion for
timing response reasons. They are also useful in high motion environments such as stress
testing.
Clear Tape Strips or Hydrogel Tape Strips are recommended to provide additional securing for the
reusable infant and flex sensors.
Clean reusable sensors with an isopropyl alcohol wipe. Allow enough time for the sensor to dry
thoroughly before reusing. The reusable sensors are also sterilized using ethylene oxide (EtO),
(cold cycle).
Compatibility
Caution
: Use only the sensors provided by Welch Allyn. These sensors are manufactured to
meet the calibration requirements for the Spot Vital Signs.
Caution
: Each sensor is designed for a specific clinical application. Optimal performance is
attained only by using each sensor appropriately.