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.

Answer and Explanation

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.

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Correct Answer is B

Explanation

Choice A reason: Benzonatate is not the correct answer. Benzonatate is a cough suppressant that works by numbing the throat and lungs. It does not help in the removal of mucus.

Choice B reason: Guaifenesin is the correct answer. Guaifenesin is an expectorant that works by thinning and loosening the mucus in the airways. It helps in the removal of mucus by making it easier to cough up.

Choice C reason: Diphenhydramine is not the correct answer. Diphenhydramine is an antihistamine that works by blocking the effects of histamine, a chemical that causes allergy symptoms. It does not help in the removal of mucus.

Choice D reason: Dextromethorphan is not the correct answer. Dextromethorphan is a cough suppressant that works by affecting the signals in the brain that trigger the cough reflex. It does not help in the removal of mucus.

A. 0.2 tablets B. 2 tablets C. 20 tablets D. 22 tablets

Correct Answer is D

Explanation

Choice A reason: 0.2 tablets is not the correct answer. To convert mg to mcg, multiply by 1000. Therefore, 0.175 mg is equal to 175 mcg. To find the number of tablets, divide the dose by the amount available. Therefore, 175 mcg / 8 mcg = 21.875 tablets. Round this to the nearest whole number, which is 22 tablets.

Choice B reason: 2 tablets is not the correct answer. This is the result of dividing the dose by 100 instead of 1000, which is incorrect.

Choice C reason: 20 tablets is not the correct answer. This is the result of rounding down instead of up, which is incorrect.

Choice D reason: 22 tablets is the correct answer. This is the result of converting the dose to mcg, dividing by the amount available, and rounding to the nearest whole number.

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

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Naxlex Comprehensive Predictor Exams

A patient with a tracheostomy has difficulty removing excessive, thick mucus from the respiratory tract. The nurse expects that which drug will be ordered to aid in the removal of mucus?

Correct Answer is B

Explanation

A nurse is preparing to administer levothyroxine 0.175 mg PO once a day. The amount available is levothyroxine 8 mcg/tablet. How many tablets should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Correct Answer is D

Explanation

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