A nurse is reinforcing teaching about exercise with a client who has type 1 diabetes mellitus. Which of the following statements by the client indicates an understanding of the teaching?

Choice A reason: Injecting insulin into a muscle that is going to be exercised can increase the absorption of insulin and lower the blood glucose level, leading to hypoglycemia. Therefore, it is advisable to avoid injecting insulin into the same body part that will be involved in the exercise.

Choice B reason: Carrying a complex carbohydrate snack with you when you exercise is not a good idea. Complex carbohydrates take longer to digest and raise the blood glucose level slowly. They are not suitable for treating or preventing hypoglycemia during or after exercise. A simple carbohydrate snack, such as glucose tablets, juice or candy, is more appropriate for this purpose.

Choice C reason: Exercising first thing in the morning before eating breakfast is not recommended for people with type 1 diabetes. This can cause a drop in blood glucose level and increase the risk of hypoglycemia. It is beter to have a balanced breakfast that includes some carbohydrates and adjust the insulin dose accordingly before exercising.

Choice D reason: Increasing the intensity of your exercise routine if your urine is positive for ketones is a dangerous practice. Ketones are produced when the body breaks down fat for energy due to lack of insulin or glucose. High levels of ketones can lead to diabetic ketoacidosis, a life-threatening condition that requires urgent medical atention. Intense exercise can raise the blood glucose level further and worsen the situation. If your urine is positive for ketones, you should avoid vigorous activity and check your blood glucose and ketone levels frequently.

Choice A reason: This test does not detect antithyroid antibodies in your blood. Antithyroid antibodies are proteins that atack the thyroid gland and can cause autoimmune thyroid diseases, such as Hashimoto’s thyroiditis or Graves’ disease. To detect antithyroid antibodies, you need a different blood test called the thyroid peroxidase (TPO) antibody test.

Choice B reason: This test does not measure the amount of thyroid hormone that ataches to a protein in your blood. Thyroid hormone can exist in two forms in the blood: free or bound. Free thyroid hormone is not atached to any protein and can enter the cells and tissues where it is needed. Bound thyroid hormone is atached to a protein called thyroxine-binding globulin (TBG) and cannot enter the cells and tissues. To measure the amount of thyroid hormone that ataches to TBG, you need a different blood test called the total thyroxine (T4) test.

Choice C reason: This test determines whether your thyroid gland is overactive, appropriately active, or underactive. TSH is a hormone produced by the pituitary gland that stimulates the thyroid gland to make and release thyroid hormones, such as thyroxine (T4) and triiodothyronine (T3). These hormones regulate many body functions, such as metabolism, growth, and development. The TSH test measures the amount of TSH in the blood and reflects how well the thyroid gland is working. If the TSH level is high, it means that the thyroid gland is underactive (hypothyroidism) and not making enough thyroid hormones. If the TSH level is low, it means that the thyroid gland is overactive (hyperthyroidism) and making too much thyroid hormones.

Choice D reason: This test does not measure the absorption of iodine and how it relates to the thyroid gland. Iodine is a mineral that is essential for the production of thyroid hormones. The thyroid gland absorbs iodine from the food and water we consume and uses it to make T4 and T3. To measure the absorption of iodine by the thyroid gland, you need a different test called the radioactive iodine uptake (RAIU) test.