This patient support community is for questions related to juvenile diabetes including
Celiac disease,
depression, diabetic complications, hyperglycemia /
diabetic keto-acidosis,
hypoglycemia, islet cell transplantation,
nutrition, parenting a diabetic child, pregnancy, pump therapy, school issues, and teens with
diabetes.
If hypoglycemia is suspected, then you should try to keep some sort of juice handy and drink a small quantity if you start to feel "off" at all just so as to make sure that this is not the cause. I happen to be a tightly-controlled diabetic who occasionally does find myself hypo and I have learned to really listen to what my body is telling me. MY symptoms are NEVER wrong, even if when I test my glucose levels, they come back normal. I can feel the symptoms when a glucose drop is in progress, before the glucose levels actually become low. So I have learned to treat the symptoms when I feel them in order to prevent severe lows from happening.
In your case, you may want to ask your doctor to check you very thoroughly to see if hypoglcyemia is indeed a big part of the problem (heart rate can speed up during a hypoglycemic episode, by the way). If not, then you may want to see a specialist to see if you can be treated for the vasovagal syncope problem.