ATI RN
ATI Pharmacology
1. A client is receiving heparin therapy. Which laboratory value should be monitored by the nurse to evaluate the effectiveness of the therapy?
- A. PT
- B. aPTT
- C. INR
- D. Platelet count
Correct answer: B
Rationale: The activated partial thromboplastin time (aPTT) is specifically used to monitor the effectiveness of heparin therapy. It should be maintained at 1.5 to 2 times the normal level. Monitoring aPTT helps ensure that the therapeutic range of heparin is achieved to prevent clot formation while minimizing the risk of bleeding complications. Choice A (PT) is incorrect as it is used to monitor warfarin therapy, not heparin. Choice C (INR) is also incorrect as it is primarily used to monitor warfarin therapy. Choice D (Platelet count) is not directly related to monitoring the effectiveness of heparin therapy.
2. A client has a new prescription for Atenolol. Which of the following instructions should be included by the healthcare provider?
- A. Take this medication in the morning.
- B. Monitor your heart rate regularly.
- C. Avoid foods high in potassium.
- D. Increase your fluid intake.
Correct answer: B
Rationale: The correct answer is B. Atenolol is a beta-blocker that can cause bradycardia, leading to a decreased heart rate. Monitoring heart rate regularly is essential to detect any significant decreases promptly and seek medical attention. While choices A, C, and D may be relevant to the client's overall health, monitoring heart rate is the priority instruction due to the nature of Atenolol's effects. Taking the medication in the morning can be individualized based on the client's needs and preferences. Avoiding foods high in potassium and increasing fluid intake are generally beneficial but not directly related to managing the side effects of Atenolol.
3. A client has a new prescription for Brimonidine ophthalmic drops and wears soft contact lenses. Which of the following instructions should the nurse include in the teaching?
- A. This medication can stain your contacts.
- B. This medication can cause your pupils to constrict.
- C. This medication can absorb into your contacts.
- D. This medication can slow your heart rate.
Correct answer: C
Rationale: The correct answer is C. Brimonidine can absorb into soft contact lenses. To prevent this, the client should remove their contacts, instill the medication, and wait at least 15 minutes before putting the contacts back in to avoid potential absorption of the medication by the lenses. Choices A, B, and D are incorrect because Brimonidine's main concern with contact lenses is its absorption into the lenses rather than staining contacts, causing pupil constriction, or affecting heart rate.
4. A client with a history of migraine headaches is starting prophylaxis therapy with Propranolol. Which of the following findings in the client history should be reported to the provider by the nurse?
- A. The client had a prior myocardial infarction.
- B. The client takes warfarin for atrial fibrillation.
- C. The client takes an SSRI for depression.
- D. An ECG indicates a first-degree heart block.
Correct answer: D
Rationale: Propranolol is contraindicated in clients with a first-degree heart block due to its negative chronotropic properties that can further slow the heart rate. This can worsen conduction through the atrioventricular node, potentially leading to heart block progression. Therefore, the nurse should report the finding of a first-degree heart block to the provider before initiating Propranolol therapy. Choices A, B, and C are not contraindications for Propranolol therapy. A prior myocardial infarction, taking warfarin for atrial fibrillation, or using an SSRI for depression do not directly impact the initiation of Propranolol therapy in a client with a history of migraine headaches.
5. A client has a new prescription for Hydrochlorothiazide. Which of the following instructions should the nurse include?
- A. Take this medication in the morning.
- B. Consume foods rich in potassium.
- C. Take this medication with a meal.
- D. Monitor for signs of dehydration.
Correct answer: D
Rationale: Hydrochlorothiazide is a diuretic that can lead to dehydration due to increased urination. Signs of dehydration include dry mouth, increased thirst, and decreased urine output. It is essential to educate the client to monitor these signs and seek medical attention if they occur. Choice A is incorrect because Hydrochlorothiazide is usually taken in the morning to prevent disruption of sleep due to increased urination during the night. Choice B is incorrect because while Hydrochlorothiazide can lead to potassium loss, consuming foods rich in potassium is not a specific instruction related to this medication. Choice C is incorrect because taking Hydrochlorothiazide with a meal is not a specific requirement for its administration.
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