ATI RN
ATI Pharmacology Quizlet
1. A client's plasma Lithium level is 2.1 mEq/L. Which of the following is an appropriate action by the nurse?
- A. Perform immediate gastric lavage.
- B. Prepare the client for hemodialysis.
- C. Administer an additional oral dose of lithium.
- D. Request a stat repeat of the laboratory test.
Correct answer: A
Rationale: In a client with a plasma lithium level of 2.1 mEq/L, immediate gastric lavage is appropriate for severe toxicity. Gastric lavage can help lower the client's lithium level by removing the unabsorbed lithium from the stomach.
2. A healthcare professional is preparing to administer IV Dantrolene to a client who has developed Malignant Hyperthermia during surgery. Which of the following actions should the healthcare professional take?
- A. Dilute the medication with sterile water and administer it rapidly.
- B. Store the medication in a refrigerator until use.
- C. Administer the medication through a large-bore IV catheter.
- D. Administer the medication via an infusion pump over 60 minutes.
Correct answer: C
Rationale: Dantrolene should be administered through a large-bore IV catheter because it is highly irritating to tissues and can cause vein irritation or thrombophlebitis if administered through a small vein. Using a large-bore IV catheter helps to minimize the risk of tissue damage and ensures proper and safe administration of the medication in emergency situations like Malignant Hyperthermia. Choices A, B, and D are incorrect because diluting the medication with sterile water and administering it rapidly can lead to tissue damage, storing the medication in a refrigerator is not necessary, and administering the medication via an infusion pump over 60 minutes is not appropriate in emergency situations like Malignant Hyperthermia where rapid administration is crucial.
3. What is pharmacodynamics?
- A. The medical reference summarizing standards of drug purity, strength, and directions for synthesis
- B. The drug's actions at receptor sites and the physiological, chemical, and behavioral effects produced by these actions
- C. The maximum response that a drug can produce
- D. Movements of the drugs throughout the body
Correct answer: B
Rationale: Pharmacodynamics refers to the drug's actions at receptor sites and the physiological, chemical, and behavioral effects produced by these actions. It involves understanding how drugs interact with the body at the molecular level to produce their effects, including mechanisms of action, receptor binding, and downstream physiological responses. Choice A is incorrect because it describes pharmacopeia, which is a reference book containing standards for drugs. Choice C refers to efficacy, which is the maximum effect a drug can produce. Choice D describes pharmacokinetics, which focuses on the movement of drugs within the body.
4. Which of the following is not a side effect of Sympathoplegics (Clonidine)?
- A. Hypertension
- B. Difficulty breathing
- C. Dry oral cavity
- D. Lethargic behavior
Correct answer: A
Rationale: The correct answer is A. Clonidine, a Sympathoplegic, typically causes hypotension rather than hypertension. The other side effects associated with Clonidine include dry oral cavity, lethargic behavior, and difficulty breathing, making them incorrect choices in this context.
5. When teaching a client with a new prescription for Furosemide, which instruction should the nurse include?
- A. Take this medication at bedtime.
- B. Avoid eating foods high in potassium.
- C. Change positions slowly.
- D. Take this medication with meals.
Correct answer: C
Rationale: The correct instruction for a client with a new prescription for Furosemide is to change positions slowly. Furosemide is a diuretic that can lead to orthostatic hypotension, causing dizziness and increasing the risk of falls. By advising the client to change positions slowly, the nurse helps prevent these potential adverse effects. Choices A, B, and D are incorrect. Taking Furosemide at bedtime (Choice A) is not necessary as it can be taken at any time of the day. Avoiding foods high in potassium (Choice B) is more relevant for clients taking potassium-sparing diuretics. Taking Furosemide with meals (Choice D) may lead to increased diuretic effects and frequent urination.
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