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Cgm night readings

donnellysdogs

donnellysdogs

Master
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13,233
Location
Northampton
Type of diabetes
Type 1
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Pump
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I'm currently using a cgm navigator.

Does anybody else using any cgm get constant hypo levels from cgm at night.... But when testing their blood get readings between 5 and 7.2... Totally normal.

Is this a Navigator problem or for all cgms?

I toss and turn all night... And have now realised that my readings from cgm being low are when I lie on the same side as the transmitter... But the transmitter isnt squished or squashed... Are all cgms like this? I always wear on arms because gardening as my business does not enable me to wear it stapled into my stomach.
 
Does the Navigator have warnings for low sugars ?. If so you should be able to test and see.

The Dexcom G4 has good warnings, if it wakes me up with a low or approaching low its always correct :-)
 
Yes, the cgm does have low warnings... But the problem is when I blood test during the night the blood readings are all totally normal and good... But the navigator is telling me I'm hypo...

I know the navigator has a time lapse but these readings plummet to hypo levels within 30 mins of going to bed. Ie last night at 00.27 My cgm started alarming and saying I was going low... I checked my blood it read 8.7. My cgm read 4.9 and during the night the cgm goes as far as lo.. But my bloods remain with stagnant readings as above within the 5.0-8.0 levels. So there is no time lapse...my bloods arent low and nowhere near low before bed or in bed......Now I have to check my blood because the cgm whilst in bed projects lows and then gives low readings when my bloods actuallly are going higher and are actually within normal 5.0+ readings.

Chas... Where do you wear your sensor? Do you lie on the same side as your sensor when you are asleep?
 
I didn't get this with my Dexcom G4 trial sensors but did get it the first night of the Medtronic sensor. It persistently woke me at various times all night with hypo alarms saying I was 2.9-3.9 when my fingerstick readings were 6.7-7.3. It didn't happen again but I only got 1 sensor to try & other users have said it's a known problem with Medtronic.
 
Thankyou. Very much appreciated.
 
I wonder if the lower night time readings may be a reason why some cgms shouldnt be given to children??
 
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