The nurse is preparing to administer insulin intravenously. Which statement about the administration of intravenous insulin is true?
Insulin is never given intravenously.
Only regular insulin can be administered intravenously.
Insulin aspart or insulin lispro can be administered intravenously, but there must be a 50% dose reduction.
Any form of insulin can be administered intravenously at the same dose as that ordered for subcutaneous administration.
The Correct Answer is B
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: Increased intestinal peristalsis is not an effect of adrenergic agonist drugs, but rather of cholinergic drugs, which stimulate the parasympathetic nervous system. Adrenergic agonist drugs activate the sympathetic nervous system, which decreases intestinal motility.
Choice B reason: Bronchial constriction is also not an effect of adrenergic agonist drugs, but rather of cholinergic drugs, which cause bronchoconstriction and increased secretions. Adrenergic agonist drugs cause bronchodilation and decreased secretions.
Choice C reason: Increased heart rate is an effect of adrenergic agonist drugs, which stimulate the beta-1 receptors in the heart, causing increased cardiac output and blood pressure. This is why adrenergic agonist drugs are used to treat conditions such as shock, cardiac arrest, and heart failure.
Choice D reason: Constricted pupils is not an effect of adrenergic agonist drugs, but rather of cholinergic drugs, which cause miosis or pupil constriction. Adrenergic agonist drugs cause mydriasis or pupil dilation.
Correct Answer is B
Explanation
Choice A reason: This is incorrect because the nurse should inject air into the NPH insulin vial after injecting air into the regular insulin vial. This prevents contamination of the regular insulin with the NPH insulin.
Choice B reason: This is correct because the nurse should inject air into the regular insulin vial first, then into the NPH insulin vial, before withdrawing the regular insulin. This equalizes the pressure in the vials and facilitates the withdrawal of the insulin.
Choice C reason: This is incorrect because the nurse should not replace the needle for withdrawal with a safety needle. The same needle should be used for injecting air and withdrawing insulin from both vials.
Choice D reason: This is incorrect because the nurse should withdraw 10 units of insulin from the regular insulin vial after injecting air into both vials. This prevents mixing of the NPH insulin with the regular insulin in the vial.
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