21 Comments
Is your insulin sensitivity factor (also called correction factor) during your sleeping hours different from your insulin sensitivity factor during your waking hours?
You must be logged in to post a comment.
© 2023 T1D Exchange. All Rights Reserved.
Maybe the next spread-sheet from my Dexcom 6 will answer this. If I were totally insensitive to insulin during sleep, why did I used to have severe hypoglycemic episodes? Nowadays, my monitor alerts me to low bg during sleep as well as unusual highs. My bg starts rising at 4 AM, consistent with daily hormonal cycles. So I arise, pee, turn up the thermostat, turn on the LED lights to counter SAD, and inject at least 0.5 units lispro. If 130-150 I take one unit lispro. Go back to bed till 6 AM when I inject glargine, prepare breakfast, and then inject lispro to cover meal. As I hit the gym more often, I KNOW I’ll be even more insulin sensitive. Good control will become trickier. But I trust my Dexcom and my One Touch and low carb diet to comfort me as I walk thru the valley of uncertainty.
I answered “yes,” then went to the pump to verify. I should have answered “no.” Only the carb ratio changes during a 24 hour period.
Modern T1D management, being the domain of utter micro-management, sometimes results in being precisely wrong to three decimal places, rather than approximately correct. Sigh!
i think it is different but my settings are the same as sometimes I get low at night with the same settings
The insulin sensitivity factor, for me, varies throughout the 24 hour period. This came into play once I started using an insulin pump.
You are not eating food, nor are you physically active during sleep. I personally have bad dreams that I am so thankful to wake up from and this may coincide with sugar levels. I checked I don’t know about insulin sensitivity?????
Not only does my insulin sensitivity vary during the day, it also changes, oscillating across the year. Sometimes I need more during the day, sometimes more at night. LADA is so much fun. I keep one eye on my CGM and respond to the trends with more or less basal. After 18 years, I have gotten good at surfing variable blood sugar.
I answered “no”, but my insulin sensitivity factor does change at different points throughout the year. i.e. during hotter summer months I need to correct my insulin doses more frequently via my pump as my body does seem to become more insulin sensitive at these times.
My correction factor ranges from 1:30 to 1:60. It flows up and down, being 1:30 at breakfast to 1:60 just before lunch. During sleep, I range 1:40 (approaching sunrise), to 1:50. In the past, I only adjusted my basal rates and bolus rates. More recently, I’ve grasped the meaning of correction factors, and have started adjusting those, as well. Wish me luck.
I set my insulin sensitivity factor at 1:80 a couple of years ago. Carb ratio varies between 1 to 15 and 1 to 20. Usually use about 14-16 units lispro a day. Low carb diet and control IQ take care of the rest. Seems to work for me.
I am assuming they meant pump settings and answered no. However, I am 99% certain that in real life, I am less sensitive to insulin when I am sleeping. I think it’s the lack of activity.
I answered “no” because I have a single sensitivity setting now that I’ve switched the tandem of control IQ. Previously with my Medtronic 670g I did have multiple sensitivity settings, with adjustment overnight to avoid having hypoglycemia.
It’s always been the same, but in the past few months, I’ve frequently been waking with BG’s below 100, so a change may be in store.
I am relatively new to use of a CGM and still adjusting the correction factors. The factor during my sleeping hours was different but I was having trouble getting night time BS levels within range, so with my counselor adjusted the settings.
I adjust basil rates but not insulin sensitivity. Meeting with educator though because got new 770G pump and will discuss. My carb ratio is 1:16. Sometimes that’s too much, sometimes not enough. Sometimes I feel like it is all a crap shoot.
I posted “yes” because I wasn’t thinking about Control-IQ. The correct answer is “no”. I’m very sensitive to seasonal cycles. Need more insulin to correct a high during summer high heat and less during the winter cold.
I am wanting a straighter line overnight. My SG ranges between 70 and 130. I would like to be more like 80-110. I don’t know if I should change sensitivity or basal. In the middle of the night Control IQ handles the low range most nights but I have to bolus small amounts when I get to 130 and arrow is still climbing at an angle which the alarm wakes me for. I wish T1D exchange could have an expert write an article on how to adjust for nights obviously in general terms because everyone is different. But night time is the time where we with T1D can maximize time in a more normal range because of less variability due to food, exercise and stress and it is 1/3 of the 24 hour period. There may be an article already on this. Hopefully someone will steer me to it.
This is just my opinion as I am not a medically trained professional, but I would think at least most of the time, you shouldn’t have to give yourself a correction at night time. Therefore I would say maybe your basal needs an adjustment. I would go over your cgm readings (I am assuming you have a cgm) with your endocrinologist or whoever helps you with your pump settings.
Of course it is. Isn’t t everyone’s?
I marked response “I do not know” because i thought it was not a valid question. I understand that some T1’s dont have their pump settings adjusted for their changing insulin needs throughout the day. I am aware. my changing needs and I thought everyone was.
.
I have 2 insulin sensitivity factors both during sleep and the same factors during my awake time. From midnight to 3 am my correction factor is 100. From 3am to 7 am it is 95. From 7 am to 9:30 am it goes back to 100 and from 9:30 am to noon it is 95. I answered “No” to your question because I use both values during sleep and awake. I’m not sure that’s really what you were asking though.
No – given that I run sleep mode 23 hours and 43 minutes per day to maintain a target BG of 110. Works for me. Keep it simple.
For 55 years, my BGs will dip low in the middle of the night. My sensitivity factor is set to deliver a little less insulin during the sleeping hours. I have very, very few lows now during the night (unless I overbolus for my bedtime snack LOL!).