Type 1 Low bg in the night
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JohnEGreen
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It could well be a pressure low this happens if you lie on the sensor putting pressure on it and causing an erroneous reading.
ert
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You should also check your long acting insulin dose is correct by skipping dinner (or eating carb free).
JohnEGreen
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Probably because your basel insulin (Lantus) is to high, you're taking too much in the evening.
Sadjers
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My night time BG varies according to my evening eating. Protein and fat all contribute to rises in BG. Eating high carb food demands higher boluses and these may be the cause. I use AAPS and the software shows that digesting my evening meal can sometimes take all night, especially after cheese or meaty dinners.
Not knowing your medication you may also want to research the Circadian rhythm and how it affects your control patterns.
On the other hand, I saw a medical presentation, via diabetes.co.uk, which explained there is growing evidence that non diabetic people often have low BG during the night. So perhaps as long as your waking BG is OK, don't worry too much.
Nothing beats an accurate basal regime. I have found that the best way to test this is to fast for three days. Your Libre results will then show any problems. It's tough but worth it.
Not knowing your medication you may also want to research the Circadian rhythm and how it affects your control patterns.
On the other hand, I saw a medical presentation, via diabetes.co.uk, which explained there is growing evidence that non diabetic people often have low BG during the night. So perhaps as long as your waking BG is OK, don't worry too much.
Nothing beats an accurate basal regime. I have found that the best way to test this is to fast for three days. Your Libre results will then show any problems. It's tough but worth it.
You change long acting depending on evening meals? I’ve noticed when I eat higher carb in the evening I go high overnight despite having correct insulin at the meal (or even going lower post meal as the insulin takes time to work). I had thought about doing this but my diabetic nurse said otherwise. How much do you change it by?
Is it in line with your daily readings? I can keep mine in the 4.5 range during the day, but at night with no exercise, adrenaline, caffeine or reserves, to keep me going it drops. It can easily skip along at around 3.5. I don’t have the alarm on for low, but it does tend to wake me up, so I up my carbs a little and it settles back down/ up to a reasonable level.
I’m T2 so cause and effect may be different.
@Sadjers is using closed loop on her pump which automatically adjusts her basal which is given through the pump as short acting insulin throughout the day and night. This is very different to using one or two doses of slow acting insulin each day. Insulin pumps allow us to change the basal dose every 30 minutes.
if having a higher carb meal I was told to split my dose of novo rapid and give the other half an hour after eating. This prevents going low post meal but also means you have novo rapid longer to stop rise. Takes a big of juggling though
We had this issue with our daughter when she went onto a CGM. It is not a malfunction with the CGM, more than likely it is showing how your liver is releasing glycogen during the night. This could have been happening before and you've only just seen it (if you've gone onto a CGM), growth hormones could be at play if you are a teenager, or something has changed in your daily routine if it is a new issue. Try the following to correct it: 1- have a small snack (this might take some trial and error with regards to the amount of carbs and time eaten) at night and do not change your insulin routine, this works for injections and pumps 2- if you are on a pump, reduce your basal dosing from about midnight/1am until about 3am- insulin changes usually need to happen about 2 hours before the moment in time. If 3am is the low point, change about midnight/1pm for a few hours and then as your sugars start to rise own their own, this should cancel out staying too low around 4am and onwards. Hope this helps.
Libre sensors don’t work!!! Mine kept alarming during the night to say I was LOW with the arrow pointing horizontally. I pricked my finger each time and it showed that my glucose levels were 6 plus!!! So inaccurate during the day too. Also hurt my arm and had a lump when I took the sensor off. Persevered for a year with the libre 2 system but I gave up in the end. It’s a totally useless system!!! Also I still needed to prick my finger anyway to work out insulin/carb ratio which you cannot do just using the sensor alone!!! Waste of NHS money and a total waste of my time!!!!
My consultant advised that the sensor often gets cold at night. Always finger prick to check the sensor is accurate as this seems to be a fault with the libre sensor. This has happened to me and when I check all is fine.
This happens to me if I lay on the arm where the sensor is. I do so much less often now. You'll know if this applies to this situation yourself. If not, then check using your conventional meter & work backwards from there: time of last meal & accompanying bolus dose, basal dose, patterns over preceding days, other factors (illness, alcohol etc). I love my Libre 2. Before using it my BG measurements mostly looked great. The richer data picture has helped me improve my control. The feeling is now back in my fingers, scarred from all the pricking. It is more discreet & hygienic. Yes, it isn't perfect but I wouldn't go back. Looking forward to the Libre 3 or Dexcom 7. The Dexcom One looks like a poor choice for the NHS to back, No doubt financially driven. Let's hope the commercial battle between Abbott & Dexcom means UK patients get access to the best technology rather than old.
porq
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It could well be that you're lying on your sensor, which can cause a false low reading.. Try keeping your fingerstick BG monitor next to your bed so you can check it that way without having to get out of bed,, even though the darned thing has woken you up and all you want to do is go back to sleep.
Hi
That happens to me. It all depends on how much you eat at your last meal and how much short acting insulin that you take. If you don't eat enough to match the amount of insulin you take it can drop during the night.
Rokaab
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It can also happen for a variety of other reasons - compression lows for the sensors (ie lying on it), an incorrect basal amount, a variable basal requirement during the night (I would be low at 2-3am every morning - some 7-9 hours after my last bolus dose) - those are a couple of examples
There is no need to check with a glucose machine if you have the symptoms of a hypo everyone should know how a hypo is for them.
Check your BG with glucometer couple of nights as follows:
-before you go to bed
-between 3 and 5 night hours
-before brekfast
Show your measurements to your doctor in order
he/she will see if you have Down Phenomen or Somogyi efect
-before you go to bed
-between 3 and 5 night hours
-before brekfast
Show your measurements to your doctor in order
he/she will see if you have Down Phenomen or Somogyi efect
