ATI RN
ATI Pharmacology Proctored Exam 2023
1. A client has a new prescription for Warfarin. The nurse should identify that the concurrent use of which of the following medications increases the client's risk of bleeding?
- A. Vitamin K
- B. Calcium carbonate
- C. Acetaminophen
- D. Ranitidine
Correct answer: C
Rationale: The correct answer is Acetaminophen (Choice C). Acetaminophen, especially in high doses, can increase the risk of bleeding in clients taking Warfarin. It can potentiate the anticoagulant effect of Warfarin, leading to an increased risk of bleeding. Vitamin K (Choice A) is actually used to reverse the effects of Warfarin in case of over-anticoagulation, so it does not increase the risk of bleeding. Calcium carbonate (Choice B) and Ranitidine (Choice D) do not significantly interact with Warfarin to increase the risk of bleeding.
2. A client is taking Epoetin Alfa for anemia. Which of the following laboratory tests should the nurse monitor to evaluate the effectiveness of the therapy?
- A. White blood cell count
- B. Platelet count
- C. Hematocrit
- D. Serum potassium level
Correct answer: C
Rationale: The nurse should monitor the hematocrit level to evaluate the effectiveness of Epoetin Alfa therapy since it stimulates red blood cell production. Hematocrit reflects the volume of red blood cells in the blood, providing a direct measure of the therapy's impact on increasing red blood cell mass and addressing anemia. Monitoring white blood cell count and platelet count is not directly related to assessing the effectiveness of Epoetin Alfa therapy for anemia. Serum potassium level monitoring may be necessary due to potential side effects of the medication, but it is not the primary indicator of therapy effectiveness in treating anemia.
3. A client in the operating room received a dose of Succinylcholine, leading to muscle rigidity and a sudden rise in body temperature. The nurse should anticipate a prescription for which of the following medications?
- A. Neostigmine
- B. Naloxone
- C. Dantrolene
- D. Vecuronium
Correct answer: C
Rationale: Muscle rigidity and a sudden rise in temperature are indicative of malignant hyperthermia, a potential complication of succinylcholine. Dantrolene is the drug of choice to treat malignant hyperthermia as it acts on skeletal muscles to reduce metabolic activity and counteract the symptoms. Neostigmine (Choice A) is used to reverse the effects of non-depolarizing neuromuscular blocking agents, not for malignant hyperthermia. Naloxone (Choice B) is an opioid antagonist used for opioid overdose. Vecuronium (Choice D) is a non-depolarizing neuromuscular blocking agent and is not the appropriate medication for malignant hyperthermia.
4. A healthcare professional is preparing to administer heparin 15,000 units subcutaneously every 12 hours. The available heparin injection is 20,000 units/mL. How many milliliters should the healthcare professional administer per dose?
- A. 0.8 mL
- B. 0.75 mL
- C. 0.5 mL
- D. 1 mL
Correct answer: A
Rationale: To calculate the volume to administer, use the formula: Desired dose / Concentration = Volume to administer. In this case, (15,000 units / 20,000 units/mL) = 0.75 mL. Since the volume needs to be rounded up to the nearest tenth, the correct answer is 0.8 mL. Choice B (0.75 mL) is incorrect because it does not account for rounding up the volume. Choices C (0.5 mL) and D (1 mL) are incorrect as they do not reflect the precise calculation based on the given concentration and desired dose.
5. A client has a new prescription for Cyclobenzaprine to treat muscle spasms. Which of the following instructions should the nurse include in the teaching?
- A. Avoid driving or operating heavy machinery while taking this medication.
- B. Take this medication on an empty stomach for best results.
- C. Take this medication only when experiencing muscle pain.
- D. Increase your intake of potassium-rich foods while taking this medication.
Correct answer: A
Rationale: The correct instruction that the nurse should include in the teaching for a client prescribed Cyclobenzaprine is to avoid driving or operating heavy machinery while taking this medication. Cyclobenzaprine can cause drowsiness, so it is important to advise clients to avoid activities that require alertness and coordination to prevent accidents or injuries. Choice B is incorrect because Cyclobenzaprine can be taken with or without food. Choice C is incorrect because Cyclobenzaprine is typically taken regularly as prescribed, not just when experiencing muscle pain. Choice D is incorrect because there is no specific need to increase potassium-rich foods while taking Cyclobenzaprine.
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