Before we were given instruction on counting carbs, it would baffle me why certain meals would consistently cause David to run low, while others would consistently cause him to run high. The “light” went on when we were introduced to carb counting.
David received his pump and training March break the year he’d turned 14 and is now 17. For a growing teen, the pump was a godsend. David has problems with a rising BG between 3 a.m. and 7 a.m. that we were not able to properly to address with Levemir (similar to Lantus) even with a split a.m. and p.m. dose. This problem has been resolved with the varied basal settings allowed by his pump.
The bolus wizard on David’s pump has made managing his own boluses and food intake something that David can do and does do by himself. He has 3 different insulin to carb ratios programmed depending upon the time of day that he eats. He is not very mathematically inclined, so counting carbs he is perfecting, while letting his pump work through the appropriate ratio’s and BG info to calculate his rapid acting insulin dose. Pre pump, I used to list the carbs for each item in his lunch box on a sheet of note paper, with the insulin to carb ratio, +/- adjustment factors for high or low BG’s and a small pocket calculator so that he could re-caculate if he decided that he might not eat everything that was packed. It was insanity sending a kid to school that way.
Three things have worked together for David to get his A1c below 7.
Testing. He tests on average 10 x a day. If a site fails, David can get up in the morning with a reading of 4.8 (86) and have his BG rise to 20 (360) in as short a time as 60 minutes, so regular testing has allowed him to catch and correct problems like this quickly.
Tightened up his pump target settings. Initially the target settings recommended by his CDE were very broad, which means that whenever he would bolus to eat, the wizard was working toward a very broad target range. We tightened the day time target (7 a.m. to 6 p.m.) to a range of 4.0 to 5.0 (72 to 90). Now everytime his bolus wizard calculates a food bolus, based on carbs, taking into account current BG, it aims to bring him into a range of 4.0 to 5.0. For night time (6 p.m. to 7 a.m.), we loosened the setting to a range of 5.0 to 5.5 (90 to 99) so that an evening snack will not aim to bring him quite as low as a day time snack.
The third thing, not necessary for people who don’t have unpredictable overnight BG’s from the after effect of competitive sports is that I started to do BG checks every night at 3 a.m. I chose 3 a.m. as this is the time of night that his basal is set to automatically bump up in dosage and I don’t want to worry about it doing that, if he happens to be heading low. So now when I check, I also correct BG’s that are too high. A couple of times each week, no correction is needed and I just go back to bed. About once a week his BG has dropped below 4 (72). I will wake him to drink a juice for any BG below 3.5 (63). The other 3 to 4 nights a week, his BG is rising and I will bolus for any BG that is higher than 8 (144). The impact of correcting a rising BG has been huge for David. He now gets out of bed in the morning for school feeling really great, whereas a rising BG in the past would have made it difficult for us to get him out of bed at all in the morning and he would be grouchy and feel crappy for the first half of the day.
It has taken a while and trial and error to get to this point, but his last A1c was 6.4, 3 months earlier 6.7 and three months before that 7.1. Oh and of course, it has really helped that he has grown only about 1/2 an inch over the last six months versus 12 inches plus of height that he gained, post pump. He started off as a 14 year old just under 5 feet tall and is now pushing 6 foot two. As an individual who is extremely active, David is a huge consumer of carbs. Over the last 14 days, our carelink site shows that he averaged 270 carbs per day, with the low being 165 and the high being 420. Way, way too many carbs for the average person, but he is burning carbs like crazy. The carelink reports also show us that he averaged 60 units of insulin daily, 50% basal and 50% bolus.
The information that the pump program gives us by doing a weekly download, is amazing and well beyond the detail of one’s simple daily log. We still keep a simple daily log, endo requirement.
Cheryl