ATI RN
ATI Pharmacology Proctored Exam
1. A provider prescribes phenobarbital for a client who has a seizure disorder. The medication has a long half-life of 4 days. How many times per day should the nurse expect to administer this medication?
- A. One
- B. Two
- C. Three
- D. Four
Correct answer: A
Rationale: Phenobarbital, with a long half-life of 4 days, remains at therapeutic levels in the body for an extended period. Due to this prolonged duration of action, the nurse should administer phenobarbital once a day to maintain a consistent therapeutic effect without the need for multiple daily doses. Administering the medication more than once a day would not be necessary and could increase the risk of side effects or toxicity. Therefore, the correct answer is to administer phenobarbital once a day.
2. A healthcare professional is preparing to administer clindamycin 200 mg by intermittent IV bolus. The amount available is clindamycin injection 200 mg in 100 mL 0.9% sodium chloride (0.9% NaCl) to infuse over 30 min. How many mL/hr should the IV pump be set to deliver?
- A. 200 mL/hr
- B. 150 mL/hr
- C. 100 mL/hr
- D. 250 mL/hr
Correct answer: A
Rationale: To calculate the flow rate in mL/hr: (Volume in mL / Time in hours) = Flow rate in mL/hr. In this case, (100 mL / 0.5 hr) = 200 mL/hr. Therefore, the IV pump should be set to deliver 200 mL/hr to administer clindamycin 200 mg over 30 minutes. Choice A is correct because it provides the accurate flow rate needed for the administration of the medication. Choices B, C, and D are incorrect as they do not calculate the flow rate correctly based on the volume and time specified in the question.
3. A patient is receiving spironolactone for heart failure. Which of the following findings should the nurse report to the provider?
- A. Hyperkalemia
- B. Hypernatremia
- C. Hyponatremia
- D. Hypokalemia
Correct answer: A
Rationale: The correct answer is A: Hyperkalemia. Spironolactone, a potassium-sparing diuretic, can lead to hyperkalemia due to its mechanism of action. Hyperkalemia, or elevated potassium levels, can result in serious cardiac complications and requires immediate medical attention. Therefore, the nurse should promptly report any signs or symptoms of hyperkalemia to prevent potential adverse outcomes in the patient. Choices B, C, and D are incorrect because spironolactone is not associated with hypernatremia, hyponatremia, or hypokalemia. Hyperkalemia is the critical finding that the nurse should report in a patient receiving spironolactone.
4. A nurse is providing discharge teaching to a client who has a new prescription for Warfarin. Which of the following statements should the nurse include?
- A. You should avoid taking aspirin for headaches while on this medication.
- B. You should use a soft toothbrush to brush your teeth.
- C. You should avoid foods that are rich in vitamin K.
- D. You should avoid prolonged exposure to sunlight.
Correct answer: B
Rationale: The correct statement to include in discharge teaching for a client prescribed Warfarin is to use a soft toothbrush to prevent gum bleeding. Warfarin is an anticoagulant that increases the risk of bleeding, so using a soft toothbrush can help prevent gum injury and bleeding. Choice A is incorrect because aspirin, another blood-thinning medication, should generally be avoided while on Warfarin to reduce the risk of bleeding. Choice C is incorrect because clients on Warfarin should maintain a consistent intake of vitamin K-rich foods rather than avoid them completely. Choice D is unrelated to the medication and not a priority teaching point for a client prescribed Warfarin.
5. Medications classified as angiotensin II receptor agents typically end in?
- A. Sartan
- B. Ase
- C. Olol
- D. Pril
Correct answer: A
Rationale: Angiotensin II receptor agents belong to the drug class called angiotensin II receptor blockers (ARBs). The generic names of ARBs usually end in -sartan, helping to identify this specific class of medications. Therefore, medications that end in -sartan are likely to be angiotensin II receptor agents. Choices B, C, and D are incorrect because drugs ending in -ase (like streptokinase), -olol (like propranolol), and -pril (like lisinopril) typically belong to different drug classes with distinct mechanisms of action.
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