ATI RN
ATI Proctored Pharmacology Test
1. A client has a Cerebrospinal fluid infection with gram-negative bacteria. Which of the following Cephalosporin antibiotics should be administered IV to treat this infection?
- A. Cefaclor
- B. Cefazolin
- C. Cefepime
- D. Cephalexin
Correct answer: C
Rationale: In treating a Cerebrospinal fluid infection caused by gram-negative bacteria, Cefepime, a fourth-generation cephalosporin, is the most suitable choice due to its enhanced efficacy against gram-negative organisms in such infections. Cefaclor (Choice A) is a second-generation cephalosporin more commonly used for respiratory tract infections. Cefazolin (Choice B) is a first-generation cephalosporin often used for skin and soft tissue infections. Cephalexin (Choice D) is a first-generation cephalosporin indicated for skin and urinary tract infections, but not the optimal choice for a Cerebrospinal fluid infection with gram-negative bacteria.
2. A client has a new prescription for Alteplase. Which of the following actions should the nurse plan to take?
- A. Administer the medication within 4 hours of the onset of symptoms.
- B. Reconstitute the medication with sterile saline.
- C. Administer heparin concurrently with the Alteplase infusion.
- D. Monitor for changes in level of consciousness.
Correct answer: D
Rationale: Alteplase is a thrombolytic agent used to dissolve blood clots. Patients receiving Alteplase are at risk for bleeding complications, including intracranial bleeding. Monitoring for changes in the level of consciousness is crucial as it can indicate early signs of bleeding, such as increased intracranial pressure. This rapid assessment allows for timely intervention and prevention of further complications. Choices A, B, and C are incorrect. Administering Alteplase within 4 hours of symptom onset is related to the time-sensitive nature of thrombolytic therapy for conditions like acute myocardial infarction or ischemic stroke. Reconstituting Alteplase with sterile saline is a correct step in preparing the medication for administration. Administering heparin concurrently with Alteplase is generally avoided due to the increased risk of bleeding.
3. A client has been on levothyroxine therapy for several months. Which of the following findings indicates a therapeutic response to the medication?
- A. Decrease in level of thyroxine (T4)
- B. Increase in weight
- C. Increase in hours of sleep per night
- D. Decrease in level of thyroid stimulating hormone (TSH)
Correct answer: D
Rationale: A therapeutic response to levothyroxine is indicated by a decrease in the level of TSH. This decrease signifies that the body requires less stimulation to produce thyroid hormone, reflecting a normalization of thyroid function due to the medication's effectiveness. Choices A, B, and C are incorrect as an increase in T4 levels, weight gain, and increased sleep hours are not indicative of a therapeutic response to levothyroxine therapy.
4. An older adult client has a new prescription for Digoxin and takes multiple other medications. The nurse should recognize that concurrent use of which of the following medications places the client at risk for Digoxin toxicity?
- A. Phenytoin
- B. Verapamil
- C. Warfarin
- D. Aluminum hydroxide
Correct answer: B
Rationale: Verapamil, a calcium-channel blocker, can increase digoxin levels, leading to toxicity. When given together, the digoxin dosage may need adjustment, and the nurse should closely monitor the client's digoxin levels to prevent toxicity symptoms such as nausea, vomiting, visual disturbances, and arrhythmias. The other choices, Phenytoin, Warfarin, and Aluminum hydroxide, do not significantly interact with Digoxin to cause toxicity. Phenytoin may reduce Digoxin levels, while Warfarin and Aluminum hydroxide have minimal interactions with Digoxin.
5. A client receiving chemotherapy with Methotrexate asks why Leucovorin is being given. Which of the following responses should the nurse use?
- A. Leucovorin reduces the risk of a transfusion reaction from Methotrexate.
- B. Leucovorin increases platelet production and prevents bleeding.
- C. Leucovorin potentiates the cytotoxic effects of Methotrexate.
- D. Leucovorin protects healthy cells from Methotrexate's toxic effects.
Correct answer: D
Rationale: Leucovorin, a folic acid derivative and an antagonist to Methotrexate, is given within 12 hours of high doses of Methotrexate to protect healthy cells from the toxic effects of Methotrexate. It helps to reduce the bone marrow suppression and gastrointestinal side effects caused by Methotrexate, supporting the client's overall well-being during chemotherapy treatment. Choices A, B, and C are incorrect because Leucovorin does not reduce the risk of a transfusion reaction from Methotrexate, increase platelet production, prevent bleeding, or potentiate the cytotoxic effects of Methotrexate. Instead, Leucovorin works by rescuing healthy cells from the toxic effects of Methotrexate.
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