We have all heard of carbohydrates before but learning to recognize what foods have carbs and which ones don't are essential for T1D's. Luckily there are some really cool apps out there that you can search for specific foods. I can't imagine trying to memorize all of the foods and their carb amount. We also read a ton of labels. On all of your food that you buy from the store they list how many carbohydrates there are per serving. Here is an example of a label and where to find carbs.
http://lowcarbdiets.about.com/od/nutrition/ss/nutritionlabels_5.htm |
http://www.sears.com/ozeri-pronto-digital-multifunction-kitchen-and-food-scale/p-00824520000P?prdNo=3&blockNo=3&blockType=G3 |
First we have to calculate if there is a correction dosage.
(Blood Glucose- Target Blood Glucose) / Insulin Sensitivity Factor
For Rose her equation looks like this...
(BG-150)/200
Once we have figured out her correction dosage than we need to figure out how much insulin she will need to eat her food. Rose's ration right now is 1 unit of insulin for every 60 carbs. For example a piece of bread has 15 g of carbohydrates. Rose would need 0.25 units if she ate that piece of bread.
Last part of figuring out Rose's insulin dosage is adding up the two above answers to the equations. This is how we lived for almost four months until we got the pump. The pump does all of our calculations for us and then it doses her too. So cool.
Remember how I said that T-slim doesn't do negative corrections or backwards corrections. When we are trying to figure out Rose's correction dosage is doesn't account for Rose being lower than her target BG. For example... If I tested her blood and she was at 100.
100-150= -50
-50/200= -0.25
For her food she is having a piece of pizza. One piece of Cheese pizza is 27g.
27/60= 0.45 units of insulin for pizza
Rose should only need what ever the correction plus the food insulin to eat pizza.
Which is 0.45 - 0.25= 0.20 units of insulin. The T-slim would not calculate the negative amount of insulin so the T-slim would say that she still needed 0.45 units for the pizza.
Sorry that is a ton of numbers but I hope it helps you better understand what we do every time we eat. For a while I hated eating and I still hate meal times. Not only do I have to cook and serve dinner but I also have 2-3 minutes of calculating insulin dosages. The pump has made it a lot easier but we still have to make sure the pump is calculating properly.
I hope you have a wonderful Thanksgiving. We have so much to be thankful for and we are so blessed.
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