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 preparing to administer ondansetron to a client. Which of the following therapeutic effects should the nurse expect from this medication?
- A. Decreased nausea
- B. Increased appetite
- C. Increased heart rate
- D. Relief of headache
Correct answer: A
Rationale: The correct answer is A: Decreased nausea. Ondansetron is classified as an antiemetic medication, which means it is used to relieve nausea and vomiting by blocking serotonin in the chemoreceptor trigger zone. Therefore, the nurse administering ondansetron should expect a therapeutic effect of decreased nausea. Choice B, increased appetite, is incorrect as ondansetron does not affect appetite. Choice C, increased heart rate, is incorrect as ondansetron does not have a direct effect on heart rate. Choice D, relief of headache, is also incorrect as the primary therapeutic effect of ondansetron is to alleviate nausea and vomiting, not headaches.
4. A nurse is caring for a client receiving patient-controlled analgesia (PCA). Which of the following interventions should the nurse take while caring for this client?
- A. Advise the client to use the pump sparingly to prevent addiction
- B. Encourage the client to use the PCA before dressing changes
- C. Encourage the client's family to administer PCA while the client is sleeping
- D. Increase the client's 4-hour limit as needed
Correct answer: B
Rationale: The correct answer is B because encouraging the client to use the PCA before dressing changes helps in managing pain proactively. Choice A is incorrect as PCA is a safe method of pain control when used appropriately, and the nurse should not suggest using it sparingly. Choice C is incorrect as only the client should operate the PCA to ensure they are in control of their pain management. Choice D is incorrect as changing the PCA limit without proper assessment and orders from the healthcare provider can lead to adverse effects.
5. A nurse is caring for a client with diabetes and a new prescription for 14 units of regular insulin and 28 units of NPH insulin subcutaneously at breakfast daily. What is the total number of units of insulin that the nurse should prepare in the insulin syringe?
- A. 14 units
- B. 28 units
- C. 32 units
- D. 42 units
Correct answer: D
Rationale: The nurse should combine both orders of insulin in the same syringe. To prepare the correct dose, the nurse should withdraw the regular insulin first (14 units) and then the NPH insulin (28 units), totaling 42 units. This combination ensures the client receives the prescribed doses of both types of insulin. Choices A, B, and C are incorrect because the nurse needs to prepare and administer both types of insulin as prescribed, resulting in a total of 42 units in the syringe.
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