I never heard of this disorder and I've thought I read it all over the last 10 years of being a diabetic. It makes me wonder how many other dangers are lurking out there to defeat me and I am unaware as of yet...
I looked up the treatment and I am posting it here.
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http://en.wikipedia.org/wiki/Gastroparesis
Treatment of gastroparesis:
The primary treatment goal for gastroparesis related to diabetes is to regain control of blood glucose levels. Treatments include insulin, oral medications, changes in diet and meal timing, and, in severe cases, feeding tubes and intravenous feeding.
It is important to note that in most cases treatment does not cure gastroparesis--it is usually a chronic condition. Treatment helps manage the condition so that sufferers can be as healthy and comfortable as possible.
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Gosh, it sounds like a deep hole to crawl out of, but if I heard you right, putting more carbs in to get a peaceful nights sleep isn't a way to resolve gastroparesis. From what I read at wikipedia, it seems that it really complicates things for a diabetic, because when carbs are reduced, almost always there is an increase in fats to some degree and extra fats can slow digestion and worsen the gastroparesis disorder. Not easy to deal with, I'm sure........
Now, I want to offer this comment. When we are eating higher carbs, our body is in a "sugar" burning mode. When we switch to lower carbs, our body is in a "fat burning mode". If we switch our eating habits drastically overnight, our digestive system will need several days if not a week or more to adjust to our changes in diet and we will experience symptoms not unlike some of those I read that one can experience with gastroparesis.
I understand you made it to the 3rd week and the 2nd week was fine and the 3rd week was awful, until you added carbs... My question is this: Even though you've had a professional medical diagnosis, why do you think that in the 2nd week you were doing so good? What do you think happened to make the 3rd week go wrong? I would spend some time thinking on this, because if I've learned anything while learning to manage my diabetes is to look over ever situation from every possible vantage point. For me, it is finding the trigger points and never giving up on finding a solution to what can sometimes seem insurmountable. Sometimes a simple solution as drinking an extra glass of water at an appropriate time was all it would take.
I hope I sound more encouraging than discouraging. At least that is my intention.... Good luck! I hope you can resolve it and then get that BG under total control one day and hopefully without any meds...... Never give up!