The nurse is preparing to administer insulin intravenously. Which statement about the administration of intravenous insulin is true?

Choice A reason: This is incorrect because insulin can be given intravenously in certain situations, such as diabetic ketoacidosis, hyperglycemic hyperosmolar state, or perioperative care.

Choice B reason: This is correct because regular insulin is the only type of insulin that can be administered intravenously, as it is a short-acting insulin that has a rapid onset and peak. Other types of insulin, such as intermediate-acting or long-acting, are not suitable for intravenous use, as they have a delayed onset and peak and may cause hypoglycemia.

Choice C reason: This is incorrect because insulin aspart and insulin lispro are rapid-acting insulins that have a faster onset and peak than regular insulin. They are not recommended for intravenous use, as they may cause severe hypoglycemia. They are usually given subcutaneously before meals to control postprandial blood glucose levels.

Choice D reason: This is incorrect because not all forms of insulin can be administered intravenously, as explained above. Only regular insulin can be given intravenously, and the dose may differ from the subcutaneous dose depending on the patient's blood glucose level and insulin sensitivity.

Choice A reason: Rotating the injection sites within the same location for a week is not correct. The client should rotate the injection sites within the same location each day to prevent lipodystrophy and ensure consistent absorption.

Choice B reason: Storing the unopened vials of insulin in the freezer is not correct. The client should store the unopened vials of insulin in the refrigerator, not the freezer, to prevent damage to the insulin.

Choice C reason: Drawing up the regular insulin before the NPH insulin is correct. The client should draw up the clear (regular) insulin before the cloudy (NPH) insulin to prevent contamination of the regular insulin with the NPH insulin.

Choice D reason: Injecting the insulin into the muscle for faster absorption is not correct. The client should inject the insulin into the subcutaneous tissue, not the muscle, to ensure appropriate absorption and prevent hypoglycemia.