Dexcom G5 MOBILE User Manual page 30

Using CGM for Treatment Decisions
If you are taking acetaminophen, your sensor glucose readings may be falsely high, causing
you to potentially miss a low glucose event or treat a high glucose event with insulin. Do
not make any treatment decision based on your CGM when acetaminophen is active in your
body.
In order to use CGM for your treatment decisions, you must calibrate a minimum of once
every 12 hours to help keep your CGM system accurate. If you do not calibrate at this
minimum frequency and make treatment decisions based on your CGM, you may not be
getting the most accurate information and could miss a high or low glucose event.
In order to use CGM for your treatment decisions, you must have:
1. Sensor glucose reading
2. Trend arrow
For more information on how to make treatment decisions using your Dexcom G5, see
Chapter 13.
If you have symptoms of low or high glucose, but your CGM is not showing low or high
glucose sensor readings, take a fingerstick blood glucose measurement with your BG
meter. If you are a caregiver of someone using the Dexcom G5, watch how they act. If their
symptoms don't match the CGM, take a fingerstick BG measurement.
Your BG meter is your backup when/if your CGM is not showing a sensor glucose reading or
your symptoms do not match your sensor readings. Remember to wash your hands before
taking a fingerstick.
Sensor Glucose Reading Different From Your Expectations
or Symptoms
The sensor glucose reading can be different from your expectations and symptoms. In this
case, wash your hands and take a fingerstick blood glucose measurement with your BG
meter to confirm your expectations and symptoms. If your sensor readings and BG meter
values are different, you can calibrate your CGM system. Wash and dry your hands, repeat
the BG measurement, and, if still different, recalibrate.
If you're not receiving an Alarm/Alert, and not taking fingerstick BG measurements, you may
be unaware of low or high glucose levels.
Dexcom G5 Mobile System User Guide
Risks and Benefits
28