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Interfering substance risks
Hydroxyurea is a medication used in the treatment of diseases including cancer and
blood disorders; it is known to interfere with sensor readings.
If you are taking hydroxyurea, your sensor readings will be higher than your actual
glucose, which could result in missed hypoglycemia alerts or errors in diabetes
management, such as giving yourself a higher dose of insulin due to falsely high
sensor glucose values. The level of inaccuracy depends on the amount of hydroxyurea
in your body. Don't use your G7 System for diabetes treatment decisions if you are
taking hydroxyurea. Talk to your physician about alternative glucose monitoring
approaches.
With the Dexcom G7 CGM System, you can take a standard or maximum
paracetamol/acetaminophen dose of 1 gram (1,000mg) every 6 hours and still use the
sensor readings to make treatment decisions. Taking higher than the maximum dose
of paracetamol/acetaminophen (e.g. > 1 gram every 6 hours in adults) may affect the
sensor readings and make them look higher than they really are.
Sensor insertion risks
In rare cases, inserting the sensor can cause infection, bleeding, or pain, and wearing
the adhesive patch can irritate your skin. In most patients, the adhesive reactions are
mild and resolve within a week. Only a few patients in the Dexcom G7 CGM System
clinical studies got slight redness and swelling. Although uncommon, some people get
a significant reaction from the sensor adhesive that may take weeks to resolve.
No sensor wires detached in clinical studies; however, there is a remote chance a
sensor wire could break or detach and remain under your skin. Sterile detached
sensor wires usually don't pose a significant medical risk. If a sensor wire breaks off
or detaches, remains under your skin, and shows signs of infection or inflammation,
contact your healthcare provider and technical support (in the phone app, go to Profile
> Contact) or contact your local Dexcom distributor.
2 • Safety Information |
Dexcom G7 User Guide
15
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Do you have a question about the G7 and is the answer not in the manual?
Questions and answers
changed sensor, it paired but get a message sensor failed start new sensor
The Dexcom G7 sensor may show a failure message after pairing due to issues such as using an outdated sensor version that is not compatible with certain devices, signal loss, or sensor adhesion problems. If pairing with a Tandem hybrid closed-loop system, an older Dexcom T7 version may cause an error message like "sensor not started 43t." Checking the sensor's LBL number and ensuring compatibility can help resolve the issue. If the problem persists, contacting Dexcom for a replacement may be necessary.
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How long after eating does readings reach the sensor?
The Dexcom G7 sensor measures glucose in interstitial fluid, not blood, and glucose levels in interstitial fluid can lag behind blood glucose levels, especially when glucose is changing rapidly. This means that after eating, the sensor reading may take some time to reflect actual blood glucose changes. The exact time can vary, but differences are more noticeable when glucose levels are rising or falling quickly.
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Wait time between showing & inserting new G7 sensor
The Dexcom G7 sensor has a 12-hour grace period at the end of its session, allowing time to replace the sensor. After inserting a new sensor, there is a sensor warm-up period before readings and alerts begin.
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Power off is where
The power off button on the Dexcom G7 receiver is the right button with a circle on it, also known as the Select button.
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How to change zone settings in G7 on Android phone app?