ATI RN
ATI Capstone Pharmacology Assessment 1
1. A client has been prescribed vasopressin for the treatment of diabetes insipidus. What is the expected pharmacologic action of this medication?
- A. To stimulate the pancreas to secrete insulin
- B. To slow the absorption of glucose in the intestine
- C. To increase reabsorption of water in the renal tubules
- D. To increase blood pressure
Correct answer: C
Rationale: The correct answer is C: To increase reabsorption of water in the renal tubules. Vasopressin, also known as antidiuretic hormone (ADH), works by increasing the reabsorption of water in the renal tubules, which helps to concentrate urine and reduce excessive urination in diabetes insipidus. Choice A is incorrect as vasopressin does not stimulate the pancreas to secrete insulin. Choice B is incorrect as vasopressin does not affect the absorption of glucose in the intestine. Choice D is incorrect as vasopressin's primary action is not to increase blood pressure, although it can have some vasoconstrictive effects.
2. A nurse is providing client education on how to administer insulin. Which of the following instructions should the nurse include?
- A. Administer the insulin into the deltoid muscle
- B. Rotate injection sites to prevent lipodystrophy
- C. Massage the site after injection
- D. Use the same site for each injection
Correct answer: B
Rationale: The correct instruction for administering insulin is to rotate injection sites to prevent lipodystrophy, a common complication of insulin therapy. Injecting into the deltoid muscle (Choice A) is not recommended for insulin injections. Massaging the site after injection (Choice C) is not necessary and can potentially increase the risk of lipodystrophy. Using the same site for each injection (Choice D) can lead to localized tissue damage and absorption irregularities, making it an incorrect choice.
3. A nurse is caring for a client prescribed montelukast. Which of the following should the nurse include in teaching related to this medication?
- A. Advise the client to take the medication once daily at bedtime
- B. This medication is for the acute management of asthma
- C. Avoid dairy products while taking this medication
- D. If the client forgets to take the medication for a few days, he should not double up on doses to catch up
Correct answer: A
Rationale: The correct answer is to advise the client to take montelukast once daily at bedtime to maintain therapeutic effects. Choice B is incorrect because montelukast is not typically used for acute asthma management but for chronic treatment. Choice C is incorrect as there are no known interactions between montelukast and dairy products. Choice D is incorrect as it is not safe to double up on doses if the client forgets to take the medication; the missed dose should be skipped and the regular dosing schedule maintained.
4. A 45-year-old client is taking methylprednisolone. What pharmacologic action should the nurse expect with this therapy?
- A. Suppression of beta2 receptors
- B. Suppression of airway mucus production
- C. Fortification of bones
- D. Suppression of candidiasis
Correct answer: B
Rationale: The correct answer is B: Suppression of airway mucus production. Corticosteroids like methylprednisolone are known to suppress airway mucus production. This action helps in reducing inflammation and swelling in the airways, making breathing easier for individuals with conditions like asthma or COPD. Choices A, C, and D are incorrect. Suppression of beta2 receptors is more related to beta-blockers, fortification of bones is associated with medications like bisphosphonates, and suppression of candidiasis is not a typical pharmacologic action of methylprednisolone.
5. A client receiving epoetin alfa therapy for anemia is being monitored for therapeutic effects. Which of the following laboratory values indicates the medication is effective?
- A. White blood cell count
- B. Hematocrit
- C. Platelet count
- D. Red blood cell count
Correct answer: B
Rationale: The correct answer is B: Hematocrit. An increase in hematocrit levels indicates the effectiveness of epoetin alfa in treating anemia. Hematocrit reflects the percentage of red blood cells in the blood, so an increase in hematocrit signifies an improvement in the patient's red blood cell count and oxygen-carrying capacity. Choices A, C, and D are incorrect because white blood cell count, platelet count, and red blood cell count do not directly reflect the therapeutic effects of epoetin alfa in treating anemia.
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