Replies to This Discussion

Permalink Reply by Estel Hines on September 27, 2009 at 5:56am

??? wait up to 3 hours for it to recalibrate itself, this works most the time for me
Black=no communication: this always happens when I connect to my computer to load the readings.

both of these happen sometimes during the night on my Dexcom 7 Plus, I think it happens when I toss and turn and lay on my sensor while sleeping.

Permalink Reply by Jaybear on September 27, 2009 at 7:29am

I have experienced out-of-range issues at night, yet I keep the receiver on my nightstand. I also find that the ??? seems to happen more frequently at night as well.

I would chalk these up to technological limitations rather than user error.

Permalink Reply by Lorraine on September 27, 2009 at 11:09am

Get out of here!!! We've only been using it for a few weeks. We have had this problem since the very beginning. Our first sensor was bad (combination of ??? or out of range all night) for three nights and we took it off. The second one was bad for two nights and then the receiver went bust. Then the next sensor was bad for 4 nights and then ok (not perfect but at least we had some readings) for the next 7. We just started our fourth and the first night was nothing but ???. Last night was the second night and it came to life about 2am although didn't have complete accuracy. That is a vast improvement from 4 nights of nothing but ???.

It works perfectly during the day though. It's like Caleb goes to sleep and so does DexCom. Anyone I asked seemed to think I was absolutely crazy. Although I'm sorry to hear you are having this problem, I'm glad to know we aren't the only one. Tech support has not been able to provide any guidance.

Hoping someone here can.

Permalink Reply by Kenneth Kellner on September 27, 2009 at 11:41am

this annoys me because the big reason I have this is to catch an overnight low!!! And then I woke up this morning at 250 (felt kind of crappy also) I went to bed at 98,wonder how long I was over 200, because my dex had no readings for at least 6 hours!!!!

Permalink Reply by Lorraine on September 27, 2009 at 12:04pm

Concur 100%

Permalink Reply by David on September 27, 2009 at 12:32pm

I just toss the received into bed with me. When i roll over it just floats around and magically ends up in the right place. The body is full of water and if you place it between the transmitter and your receiver, a lot of the signal is absorbed. That's what my Dexcom trainer recommended. I've not had aa ??? or out of range reading since i started sleeping with it. I keep an old cell phone case on the night stand and slip dex into it when i get up, pinned to my sleeping shorts.

Permalink Reply by Helmut on September 27, 2009 at 4:40pm

I notice 2 distinct issues:

1. The 7+ definitely has the best range when there is line-of-sight between transmitter and receiver. Currently I wear my sensor on my LEFT love handle straight down from under the arm pit. I noticed some missing data points during the day when I had the receiver in my RIGHT pocket. I solved the problem by moving the receiver to my LEFT pocket. At night I keep the receiver on my night stand. When I turn so that my body is between the transmitter and receiver I lose connection. I toss and turn enough so that I am not out-of-range for hours. If I wake up during the night and the receiver has no readout I turn towards the receiver and within 5 minutes I get a reading. I don't wait out the 5 minutes because the 7+ will alarm me if I am outside my defined bg range. The data points that I see make sense. For example, if the trend is downwards and a few data points are missing the next data point will be lower.

2. Readouts change when physical pressure is applied to the sensor. I read about this on CWD and my observations seem to validate the theory. When this happens the readout looks very erratic. Steady for a while and then a drastic change followed by no data points. With my sensor attached to my side I know that I exert pressure. The line looks like pieces from different graphs that don't belong together. Going forward I will chose spots that I don't lie on.

Permalink Reply by etta amy on September 28, 2009 at 2:24pm

I've been getting those missing points too during the night. I've been trying to figure out the "spots that I don't lie on," both for comfort and to keep the sensor unsquished. Can't quite figure out where those are! I'm thinking about trying the bottom of the thoracic level, below my back ribs, at the point where my side turns into my back (if that makes any sense). Seems like the lumbar curve might keep the sensor out of trouble.

Permalink Reply by Kenneth Kellner on September 29, 2009 at 12:58pm

it happened again last night! This is really getting me mad, because I have been having some issues with my morning BG's. Last night I went to bed 102 and woke up 237 with large ketones!!! It has been a crappy day today because of it. I am now thankfully 94 with no ketones (they went away pretty quickly, kind of suprised they were large). I called tech support and of course they had no solution for me!!!!

Permalink Reply by Lorraine on September 29, 2009 at 2:13pm

We've actually had a couple of good nights since I have been tucking the receiver under Caleb's pillow or on the bed somewhere. It's probably unrelated, but I'm not about to change it.

Permalink Reply by Kenneth Kellner on October 1, 2009 at 7:40am

It's been working great with it in the bed!!

Permalink Reply by Lorraine on October 1, 2009 at 10:53am

Oh my gosh! Are you serious? Could it just be THAT easy??? Perhaps it being on the hard surface of the nightstand like we had it interferes somehow??? How does DexCom NOT KNOW THIS???? I need to create a pillow or something for Caleb because I keep having to swim around for it in the middle of the night. I tucked in into a teddy bear's collar last night - that worked well! :)

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