ATI RN
ATI Pharmacology Proctored Exam 2023
1. While caring for a client receiving Heparin therapy, which of the following laboratory tests should the nurse monitor to evaluate the effectiveness of the therapy?
- A. PT
- B. INR
- C. aPTT
- D. Platelet count
Correct answer: C
Rationale: The nurse should monitor the aPTT (activated partial thromboplastin time) when caring for a client receiving Heparin therapy. The aPTT reflects the intrinsic pathway of the clotting cascade and is used to monitor the effectiveness of heparin, which primarily affects this pathway by potentiating antithrombin III. Monitoring the aPTT helps ensure that the client's blood is within the therapeutic range to prevent thrombus formation. Choices A, B, and D are incorrect. PT (Prothrombin Time) and INR (International Normalized Ratio) are used to monitor Warfarin therapy, not Heparin. Platelet count is important in assessing for thrombocytopenia but is not a specific indicator of Heparin therapy effectiveness.
2. A client has a new prescription for Dabigatran. Which of the following instructions should be included?
- A. Take the medication with food.
- B. Store the capsules in a pill organizer.
- C. Crush the medication before swallowing.
- D. Expect frequent headaches while taking this medication.
Correct answer: A
Rationale: The correct answer is A: 'Take the medication with food.' Taking Dabigatran with food is recommended to reduce gastrointestinal discomfort, a common side effect associated with this medication. Food can help minimize stomach irritation and improve tolerability. Choices B, C, and D are incorrect. Storing the capsules in a pill organizer (B) is a good practice for organization but not a specific instruction for this medication. Crushing the medication before swallowing (C) is not recommended for Dabigatran as it is available as a capsule and should be swallowed whole. Expecting frequent headaches while taking this medication (D) is not a common side effect of Dabigatran and should not be anticipated.
3. A healthcare provider is educating a client who has a prescription for Theophylline. Which of the following instructions should the healthcare provider include?
- A. Avoid caffeine while taking this medication.
- B. You should increase your fluid intake.
- C. Take this medication in the evening.
- D. You may experience increased appetite while on this medication.
Correct answer: A
Rationale: The correct answer is A: 'Avoid caffeine while taking this medication.' Caffeine can increase the risk of theophylline toxicity as it competes for the same metabolic pathways. Consuming caffeine while on theophylline can lead to adverse effects. Choice B is incorrect because although maintaining adequate hydration is important, it is not a specific instruction related to theophylline use. Choice C is incorrect as the timing of the medication administration should be based on the healthcare provider's recommendation and the client's individual needs. Choice D is incorrect as increased appetite is not a common side effect associated with theophylline.
4. A client in a substance abuse clinic is being assessed by a nurse after discontinuing disulfiram due to severe nausea and vomiting. What is the likely cause of the client's distress?
- A. The client demonstrated an allergic response to the medication.
- B. The client experienced a common side effect of the medication.
- C. The client consumed alcohol while taking the medication.
- D. The client took an overdose of the medication.
Correct answer: C
Rationale: Disulfiram, when combined with alcohol, leads to a severe reaction causing nausea and vomiting. Since the client experienced these symptoms after starting disulfiram, it is likely that they consumed alcohol while taking the medication. Choice A is incorrect because the symptoms are more indicative of the interaction with alcohol rather than an allergic response. Choice B is incorrect as severe nausea and vomiting are not common side effects of disulfiram alone. Choice D is incorrect as there is no indication of an overdose based on the symptoms described.
5. What is the therapeutic action of Phenytoin?
- A. Antidiabetic
- B. Anticonvulsant
- C. Mood stabilizer
- D. Antianxiety agent
Correct answer: B
Rationale: Phenytoin is primarily used as an anticonvulsant to prevent and control seizures. It works by stabilizing electrical activity in the brain, making it effective in managing conditions like epilepsy. Antidiabetic medications are used to regulate blood sugar levels, mood stabilizers help manage mood disorders, and antianxiety agents are used to reduce anxiety symptoms, none of which are the primary therapeutic action of Phenytoin.
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