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. Disulfiram is taken by a client daily for abstinence maintenance. What is an adverse effect of this therapy?
- A. Hepatotoxicity
- B. Wernicke's aphasia
- C. Suicidal ideations
- D. Diarrhea
Correct answer: A
Rationale: The correct answer is A: Hepatotoxicity. Disulfiram is known to cause hepatotoxicity as a severe adverse effect. This occurs due to the inhibition of aldehyde dehydrogenase, leading to the accumulation of acetaldehyde when alcohol is consumed. Wernicke's aphasia (Choice B) is a language disorder unrelated to disulfiram therapy. Suicidal ideations (Choice C) may be associated with certain medications, but it is not a common adverse effect of disulfiram. Diarrhea (Choice D) is not a typical adverse effect of disulfiram.
3. A healthcare provider is preparing to administer bisacodyl suppository to a client. Which of the following actions should the healthcare provider take?
- A. Don sterile gloves
- B. Lubricate index finger
- C. Use a rectal applicator for insertion
- D. Position client supine with knees bent
Correct answer: B
Rationale: The correct action when administering a bisacodyl suppository is to lubricate the index finger for easier insertion. Using a rectal applicator for insertion is not recommended for bisacodyl suppositories. Positioning the client supine with knees bent is not necessary for the administration of a bisacodyl suppository. While wearing gloves is important for infection control, sterile gloves are not required for this procedure.
4. A nurse is reviewing a client's medication regimen. Which of the following medications places the client at increased risk for digoxin toxicity?
- A. Calcium channel blockers
- B. Potassium-sparing diuretics
- C. Beta blockers
- D. Loop diuretics
Correct answer: D
Rationale: The correct answer is D, Loop diuretics. Loop diuretics can lead to hypokalemia, which increases the risk for digoxin toxicity. Loop diuretics cause potassium loss, and hypokalemia can potentiate the toxic effects of digoxin. Choices A, B, and C are incorrect because calcium channel blockers, potassium-sparing diuretics, and beta blockers do not directly increase the risk of digoxin toxicity.
5. A client is prescribed spironolactone. Which of the following findings would indicate an adverse effect of this medication?
- A. Hyperkalemia
- B. Hypokalemia
- C. Hyponatremia
- D. Hypernatremia
Correct answer: A
Rationale: Hyperkalemia is the correct answer as it is an adverse effect associated with spironolactone, a potassium-sparing diuretic. Spironolactone works by blocking the aldosterone receptor in the distal convoluted tubule, leading to decreased potassium excretion and potential hyperkalemia. Hypokalemia (choice B) and hyponatremia (choice C) are not typically associated with spironolactone use. Hypernatremia (choice D) is also an unlikely finding with spironolactone.
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