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Guardian 3 Sensor Transmitter Guardian Sensor Medtronic MiniMed 670G Medtronic Oval Tape

Use Tegaderm Film in place of the Medtronic Oval Tape for the Guardian 3 or Enlite CGM Systems

Tegaderm Film to the Rescue

When I run out of the oval tape that comes with the Guardian 3 Sensors for the MiniMed 670G, the Tegaderm Film by 3M comes in very handy. I used these films for my Enlite sensor and the Medtronic MiniMd 530G.

The oval tape is a little complicated for me that I end up peeling the wrong side or get it all tangled up before applying it on my skin.

It seems as if I end up using an extra one during insertion and running out of the oval tape the tail end of my 3 moth supply.

Tagaderm Film by 3M purchased on Amazon

The Tegaderm Film comes in different sizes and works well in covering the sensor and making it water proof just like the oval tape.

This summer I tested out two sizes bought at Amazon.

The larger size Tagaderm film (4”x43/4”)worked well for when I had to jump into the pool with the kids but it covers such a large area.

I liked the assurance that the sensor was completely waterproofed over a large area.

With the larger Tegaderm Film you certainly do not need apply extra tape under the Transmitter.

The smaller sized Tegaderm Film (2.375”x2.75) fits the same as the oval tape.

The only downside to the Tegaderm Film is that it will peel off if you do not apply it firmly to your skin.

The films can be pricey at local Pharmacies but you should get very reasonable prices (no more than $.50 per tape) on Amazon or Ebay.

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Auto Mode Guardian Sensor Medtronic MiniMed 670G

A year Later – Success with Auto Mode

Exactly a year ago on this day, I met with my diabetes educator for my Medtronic MiniMed 670G training. Two weeks later I started using Auto Mode.

Along the way, I started documenting my journey on ButDoISay, nearly gave up on Auto Mode and certainly drove my endocrinologist crazy by constantly changing my delivery settings.

Her very words during our last appointment were: “Why change something if it ain’t broken”

Since we have a good rapport my answer was “You know, the scientist in me pushes me to fiddle with the settings. Right?!” And she just laughed.

Finally 100%. I took a year but I think am getting there
Time in Range is 91% in the last 7 days

Fittingly, yesterday for the first time I was 100% in Auto Mode and 100% in Target Range. Woohoo! I just can’t believe how the algorithm has learned my sugar basal rhythms in the last one year.

But seriously, the last year was also a very stressful year for me. Our youngest daughter was diagnosed with Autism at the start of 2018 and my life was completely changed. All of a sudden I started noticing all the missed milestones and my schedule was now filled with Autism parent training, speech therapy, and occupational therapy appointments.

However, the most stressful thing for me was not being ready to accept that my daughter was fine in her world and I am the one who needed to change to make sure I gave her the love and support that she needed to navigate around my world.

One thing though I did not have to worry so much about was: Do I have the correct basals set to deal with the stress and emotional roller coaster that came with our daughter’s diagnosis? This is quite liberating and freeing.

AUTO MODE TO THE RESCUE

Through this time, Auto Mode worked like a champ and I can undoubtedly say it has done a better job of adapting to all the stressful events of 2018 than I would have done if it was left to me in Manual Mode.

I no longer have to worry so much about lows when taking my daughters to two separate schools or doing yard work. (I had been diagnosed with uncontrolled severe hypoglycemia in 2013 when I got my first pump. I am also a late onset Type 1)

Despite Auto Mode’s many shortcomings that could keep you awake all night, I am glad that I never gave up.

WITH AUTO MODE PATIENCE IS KEY

This is my advice: If you are thinking of giving up on Auto Mode because of all those highs that you can’t seem to control, just give it time. For me it has taken close to a year to finally get to where I am comfortable with my numbers.

The Auto Mode algorithm seems to be more adaptive than I even thought. And the more data you feed it, the better it will become.

 

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Guardian Sensor Infusion Sets Medtronic Contour next Link 2.4 meter Medtronic MiniMed 670G

The perfect storm – pizza, sensor change, and a kinked infusion set canula = readings out of this world!

 

The Perfect storm. New infusion set, sensor, and pizza.

Lesson I learned: At the beginning of sensor life, it might not be a good idea to only depend on sensor readings only.  Also, probably not a good idea to change the Guardian sensor, infusion set and eat pizza close together!


Last night, I had what I would call a perfect storm where I replaced my sensor and infusion set and then ate pizza. Unfortunately, my sensor did not catch up with a sharp rise in blood sugar since it had not stabilized. I only caught the high sugar readings when I checked my meter Blood Glucose (BG) reading.

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Auto Mode CGM Sensors Guardian Sensor

Recovering from the “Sensor Updating” Message

Every now and then you will get this dreaded message on your Medtronic MiniMed 670G:

Do not Calibrate. Sensor Updating. Do not Calibrate. Sensor Updating. This could take up to 3 hours

In most cases the sensor updating message comes on because I have entered consecutive meter BG readings that the sensor does not like.

You know that chances this will mean that you have to replace your all-valuable sensor when it is all said and done. I have not had so much luck with the “updating” part. Almost always the story ends with “replace sensor.”

As a matter of fact if I get this error towards the end of life of the sensor, I will just change the sensor than wait for 3 hours.

What i do when i get the “sensor updating” message

To salvage a sensor that is only a couple days old (around 4 days or less), I disconnect and then reconnect the sensor following the procedure below:

  1. Very carefully remove the tape and completely disconnect the transmitter just like you during sensor change-out.
  2. Charge the transmitter once again.
  3. Remove the transmitter from the charger.
  4. Reinsert the sensor and start a new connection and go through warmup under
    Options>Utilities>Sensor Settings>Sensor Connection>Start New Sensor.

Categories
Guardian Sensor

“Marinating” the Guardian 3 Sensor – Does it Work?

Some people using the Minimed 670G pump and Guardian sensor have recommended inserting a new sensor a couple hours beforehand prior to the expiry of their sensor they are using (a process they call “marinating” the sensor). In this way the sensor stabilizes well before you have to exchange it out with an old sensor.

I have tried this technique but with mixed results. It has worked beautifully lately but initially a couple sensors completely failed prior to the warm up period. As soon as I inserted the sensors into the transmitter, the green transmitter light did not blink as expected. Neither could the pump find the sensor. Maybe a bad batch?

Marinating helps the sensor signal stabilize quicker after the warm up period, although you still have to pay attention to upper thigh sites (they take longer to stabilize and can lead to major lows once the sensor stabilizes).