User's Guide

Dexcom G6 System User Guide
177
Chapter 11: Treatment Decisions
WARNING
No Number, No Arrow, No CGM Treatment Decision
If your G6 doesn’t show a number or arrow, or your G6 readings don’t match your
symptoms, use your meter to make diabetes treatment decisions.
No number, no arrow, no treatment decision. When in doubt, get your meter out.
Follow G6 instructions. If you don’t, you could miss a severe low or high glucose event.
11.5 Watch and Wait
Be patient. Insulin takes time to work. When your BG is high, think about when you
last took insulin. Rapid-acting insulin doesn’t start working until 15-30 minutes after
dosing. It works best 1 or 2 hours later and stays in your system about 4 hours. If you
take another corrective insulin dose within that time frame – or stack insulin – it could
result in low BG. Watch and wait instead.
Don’t worry – If you take insulin to cover what you eat, you aren't stacking insulin.
And you do want to respond to a high G6 reading between meals; just be careful not
to overcorrect. Talk with your HCP about what you should do if you’re high between
meals.
11.6 Using Your G6 for Treatment Decisions
Alarm/Alerts
Just got a G6 reading alarm/alert? You probably need to make a treatment decision!
Your HCP can help you set your alerts. Determine why you want to set an alert at a
specific level. Do you want to know when you have gone too high or low? Or perhaps
you want to set it at level where you typically make a treatment decision, like taking
insulin. Find a good balance between getting too many High and Low Alerts and not
having enough time to prevent a high or low when you get one. Talk with your HCP
about your settings and how you should change them over time.
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