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Select Device Freestyle Lingo Freestyle Libre 3 Freestyle Libre 2 Freestyle Libre 14 Day Dexcom G7 Dexcom G6 Dexcom Stelo Guardian Connect Medtronic Simplera Eversense Meter Omnipod Omnipod Dash Medtronic 780G Medtronic 630G Tandem t:slim X2 Bigfoot Unity Medtronic InPen Tempo Pen NovoPen 6/NovoPen Echo Insulin Pen Afrezza CeQur Simplicity Patch V-Go Patch Omnipod GO Patch Syringe and Vial Beta Bionics iLet Pancreas Control IQ with Dexcom Control IQ with Freestyle Libre Medtronic 780G with Smart Guard Omnipod 5 Tandem Mobi Tidepool Loop twiist DIY Loop Apple Series 6/7/8/9/10/SE (2nd Generation) Garmin vívosmart 5™ Garmin Venu Sq 2 Garmin Venu 3 Garmin vivoactive 5 Garmin Fenix 8 Garmin vivofit jr 3 Garmin Forerunner 165/265/965 Garmin epix (Gen 2) Garmin Enduro 3 Fitbit Ace LTE Fitbit Charge 6 Fitbit Inspire 3 Fitbit Versa/Versa 2/4/Versa Lite Fitbit Sense 2 Fitbit Luxe Google Pixel 2/3 Samsung Galaxy 4/5 Xiaomi Mi Band 9 Oura Ring Whoop 4.0 Withings ScanWatch 2 Withings ScanWatch Lite Pedometer 3D Pedometer
Summary
The Medtronic Guardian Connect is a continuous glucose monitoring (CGM) system that provides real-time glucose data on a compatible smartphone. The system offers optional low and high blood sugar notifications and can be inserted on the abdomen or back of the upper arm.
MARD of 9.6%
This system combines the Tandem t:slim x2 with the Dexcom G6 or G7 continuous glucose monitor (CGM) to automatically adjust insulin delivery in response to glucose trends. It's easy to use and allows bolus dosing directly from a compatible iOS or Android smartphone.
Components
Guardian Connect : Sensor
Sensor is inserted underneath the skin, either on the abdomen or arm. Push buttons applicator allows sensor to be placed on the body in one step.
Guardian Connect : Transmitter
Seashell-shaped with built-in Bluetooth capability that allows it to send glucose data directly to a smartphone every 5 minutes.
Guardian Connect : Receiver
Trends and alerts are viewed directly on a mobile device. Available for both iOS and Android devices.
Control IQ with Dexcom : Pump
Touch screen pump connects tubing to a small patch called an infusion set that attaches to the body.
Control IQ : Sensor
Automatic applicator inserts sensor just under the surface of the skin and can be applied to many places on the body.
Control IQ with Dexcom : Controller
t:slim pump receives CGM readings to automatically adjust basal insulin delivery via an infusion set. Compatible smartphone can be used to view and administer boluses via the t:connect app.
Control IQ : Infusion Set
An infusion set contains the thin plastic tubing that delivers insulin from the pump to the body.
Device Details
Overview
One of the larger sensors, may be cumbersome to wear on some parts of the body under clothes.
The system automatically adjusts insulin levels from the Tandem t:slim X2 pump based on the Dexcom G6 or G7 readings for more time in range.
Affordability and Access
$$$$
Sometimes covered. The costs vary depending on individual insurance coverage and how insurance classifies CGMs. Price range $0-$600/month.
$$$$
Widely covered for insulin-dependent type 1 and 2. Supplies for Pump and Sensor provided by DME suppliers. Price range; $5-$6,995 to start and $0-$200/month.
Data Monitoring Options
Yes
CGM data can be linked to a CareLink account and shared with the user's health care team.
Yes
The t:connect mobile app for the t:slim X2 pump wirelessly uploads pump and CGM data to the cloud-based t:connect web application.
Data View Options
Yes
The Guardian Connect mobile app allows users to view glucose levels, trends, create customizable alerts, and share blood glucose data with family and friends.
Yes
Data can be viewed directly on the pump screen or on the t:connect mobile app (available for both iOS and Android devices).
Duration and Storage
7 Days
Sensors last 7 days, and transmitter battery needs weekly charging and replacement once a year. Both can be stored between 36°F - 86°F.
3-day pump 10-day sensor
Sensors last 10 days and transmitters last 90 and work at 50ºF – 108ºF. Pump can be used for up to 72 hrs, battery life lasts five days with the use of CGM, and work between 40°F - 99°F.
*CGM transmitter is only required for the Dexcom G6 model.
Vision / Auditory / Dexterity
YES text to speech
YES vibration alerts
A LOT of dexterity needed
NO text to speech
YES vibration alerts
A LOT of dexterity needed
Patient Considerations
Active Lifestyle
Waterproof transmitter when submerged in up to 2.5 meters of water for 30 minutes and must be within 20 feet of a connected mobile device.
Exercise Activity. Can manually increase target range to 140-160 mg/dl. Insulin decreases when Control IQ predicts CGM ≤140 mg/dl and increases when ≥ 160 mg/dl within 30 minutes. Autocorrections will still occur. Pump is not waterproof. CGM is waterproof.
Avoiding Highs and Lows
Measures sensor glucose 24/7 and sends alerts when a high or low is detected. Trend arrows show the direction glucose is heading, with the rate of change.
Auto basal and bolus insulin. Responds to CGM data by increasing or decreasing basal insulin delivery to prevent highs and lows and maintain a target blood glucose of 110 mg/dl. Auto-bolus is available once per hour to correct blood sugar above 180 mg/dl.
Comfort
More tape is needed for Medtronic sensors.
Low profile. Low profile/low maintenance sensor. Small tubed pump with the most infusion sets to pick from.
Easy Insulin Dosing
Sensor trends can be used for dose adjustment.
Automatically adjusts dosing. Sensor integration allows for the pump to automatically adjust insulin doses. More customizable dosing than pens or syringes. Basal in 0.001 increments, bolus in 0.01 increments. Extended bolus available.
Easy to Use
Rechargeable sensor transmitter but has the most steps to change sensor.
Modern & flexible. Rechargeable and touchscreen pump. Sensor integrated with multiple devices in case you change up what you're using.
Fewer Fingersticks
2 daily finger-sticks are needed to calibrate the sensor.
Factory-calibrated sensor. Fingersticks needed for backup only.
Privacy
Somewhat discreet. Ability to see sugar on watch or phone. Sensor requires regular meter use.
Discreet. Ability to check blood sugar on phone or watch. Ability to bolus on a compatible smartphone. Pump has tubing but can be clipped to clothing or placed in a pocket to be discreet when needed. Dexcom's built-in hypoglycemia safety alarm alerts users when glucose is below 55 mg/dl and is always on.