User`s guide
Dexcom G4 User’s Guide | 35
To use your Dexcom G4 Continuous Glucose Monitoring System
you will need a sensor, a transmitter, and a receiver. You will also
need a blood glucose meter and test strips for calibration. Once
inserted and calibrated, the sensor will continuously measure
and display your sensor glucose readings for up to 7 days. The
following sections will show you how to insert the sensor and
start a new continuous glucose monitoring session.
Please review the tutorial on the CD in your kit. The tutorial is
also available online at www.dexcom.com.
3.1 BEFORE YOU START
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Make sure you charge your receiver completely. See Chapter 1, Section 1.4,
Charging Your Receiver Battery.
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Check that the date and time are correct on the receiver.
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Make sure the correct transmitter ID has been entered into your receiver (see
Chapter 2, Section 2.2, The Settings Menu).
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Check the Use by Date on the sensor. The Use by Date format is YYYY-
MM-DD. Sensors must be inserted on or before the end of the calendar day
printed on the sensor package label.
For patients undergoing an MRI with a retained wire broken off from a Dexcom
G4 Sensor, in-vitro MRI testing did not detect any safety hazards. There was no
signicant migration or heating of the wire and imaging artifacts were limited to
the area around the wire.
Sensors may fracture on rare occasions. If a sensor breaks and no
portion of it is visible above the skin, do not attempt to remove it.
Seek professional medical help if you have symptoms of infection or
inammation—redness, swelling or pain—at the insertion site. If you
experience a broken sensor, please report this to your local distributor.