Welch Allyn 420 Series Operator's Manual page 63

sor wrap over the sensor assembly. Wrap the sensor snugly, but not so tight that it restricts the
blood flow.
Note: For optimum light transmission, attach the sensor to the finger or toe. For best results, secure the
cable independently from the sensor. Make sure that the tape securing the cable does not restrict
the blood flow.
*Micropore is a registered trademark of the 3M Company.
Infant Sensor - The infant sensor is for measuring infants where finger tip measurement is
impractical. The infant sensor should be applied to the large toe of infants greater than 2 kilo-
grams. Apply the clear, double stick tape or Hydrogel Tape Strips to the smooth side of the sen-
sor.
Position infant sensor on the big toe. Make sure the emitter portion of the sensor is exactly
aligned with the detector portion. Verify that the light emitter portion of the sensor is on the nail
or top side of the foot, and the detector is on the opposite side.
Note: Attach the sensor using 3M Micropore™
over the sensor assembly snugly, but not so tight that it restricts blood flow. For best results,
secure cable independently from the sensor, preferably around patient's ankle or lower leg. Make
sure the tape securing the cable does not restrict blood flow.
*Micropore is a registered trademark of the 3M Company.
Ear Clip Sensor - This sensor is for adults where finger tip measurement is impractical. Rub the
ear lobe vigorously for 5 seconds and then apply the ear clip to the lobe of the ear. Make sure
the ear clip is positioned so the LED emitters and the detector are completely covered by the ear-
lobe. This ensures no stray light bypasses the earlobe, which can lead to SpO
Reflectance Sensor - The reflectance sensor is for use on well vascularized skin surfaces. For
adults, this is usually the center of the forehead slightly above and between the eyebrows. The
reflectance sensor holder provides the precise skin pressure this sensor requires.
Remove the backing from one side of the double back tape and apply to the flange of the holder,
then remove the back from the other side of the tape. Press the sensor into the foam with the
windows out, and apply to the patient. Use additional tape to secure the lead wire to the patient
to avoid pulling or tipping the sensor.
Caution: The reflectance sensor is not recommended for pediatric patients because the
accuracy is not established for pediatric use.
Spot Vital Signs
*
tape or equivalent by wrapping the tape or sensor wrap
inaccuracies.
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