ATI LPN
LPN Pharmacology Questions
1. A client has a new prescription for metoprolol. Which of the following instructions should the nurse include?
- A. Monitor your blood pressure daily.
- B. Take the medication with food.
- C. Increase your intake of potassium-rich foods.
- D. Avoid consuming grapefruit juice.
Correct answer: A
Rationale: The correct answer is A, 'Monitor your blood pressure daily.' When a client is prescribed metoprolol, it is important to monitor blood pressure daily because the medication can cause hypotension, leading to low blood pressure. Regular monitoring allows for the early detection of any potential issues and adjustment of treatment if necessary. Choices B, C, and D are incorrect. Taking metoprolol with food is not necessary, increasing potassium-rich foods is not directly related to metoprolol therapy, and avoiding grapefruit juice is more relevant for certain other medications that interact with grapefruit.
2. The client has atrial fibrillation and is receiving warfarin (Coumadin) therapy. Which laboratory test should be monitored to evaluate the effectiveness of the warfarin therapy?
- A. Prothrombin time (PT) and international normalized ratio (INR)
- B. Activated partial thromboplastin time (aPTT)
- C. Complete blood count (CBC)
- D. Fibrinogen levels
Correct answer: A
Rationale: Monitoring the Prothrombin time (PT) and international normalized ratio (INR) is crucial for assessing the effectiveness of warfarin therapy. These tests help determine the clotting ability of the blood and ensure that the client is within the desired therapeutic range to prevent clotting events or bleeding complications. Activated partial thromboplastin time (aPTT) (Choice B) is more commonly used to monitor heparin therapy, not warfarin. Complete blood count (CBC) (Choice C) and fibrinogen levels (Choice D) do not directly assess the effectiveness of warfarin therapy in the same way that PT and INR do.
3. The client is being taught about the use of sublingual nitroglycerin for chest pain. Which instruction should be provided?
- A. Swallow the tablet whole with water.
- B. Place the tablet under the tongue and let it dissolve.
- C. Chew the tablet and then swallow.
- D. Place the tablet between the cheek and gum.
Correct answer: B
Rationale: The correct method for administering sublingual nitroglycerin is to place the tablet under the tongue and allow it to dissolve. This route of administration facilitates rapid absorption of the medication into the bloodstream, enabling quick relief of chest pain associated with angina or heart conditions. Choice A is incorrect because sublingual nitroglycerin should not be swallowed whole. Choice C is wrong as chewing the tablet can lead to the rapid release of the drug, causing adverse effects like headaches or dizziness. Choice D is also incorrect as the tablet should not be placed between the cheek and gum, but under the tongue for proper absorption.
4. A client is taking haloperidol. Which of the following findings should the nurse report to the provider?
- A. Weight gain
- B. Dry mouth
- C. Tremors
- D. Tardive dyskinesia
Correct answer: D
Rationale: The correct answer is D: Tardive dyskinesia. Tardive dyskinesia is a serious side effect associated with the long-term use of haloperidol. It is characterized by involuntary movements of the face, tongue, and extremities. Early detection is crucial as tardive dyskinesia may be irreversible and should be reported promptly to the healthcare provider for further evaluation and management. Choices A, B, and C are incorrect because weight gain, dry mouth, and tremors are common side effects of haloperidol but are not as concerning as tardive dyskinesia. While they should still be monitored and managed, tardive dyskinesia requires immediate attention due to its potentially irreversible nature.
5. When educating a client with a new prescription for nitroglycerin, which of the following instructions should the nurse include?
- A. Store the medication in a cool, dark place.
- B. Take the medication before bedtime.
- C. Take the medication with food.
- D. Take the medication at the first sign of chest pain.
Correct answer: D
Rationale: The correct instruction for a client with a new prescription for nitroglycerin is to take the medication at the first sign of chest pain. Nitroglycerin is a vasodilator used to relieve chest pain associated with angina. Taking it at the onset of chest pain ensures prompt relief by dilating blood vessels and increasing blood flow to the heart muscle. Storing nitroglycerin in a cool, dark place helps maintain its potency, while taking it with food can alter its absorption. Timing the medication with bedtime is not necessary, but prompt administration at the first sign of chest pain is crucial for effective management of angina. Choices A, B, and C are incorrect because storing the medication in a cool, dark place, taking it before bedtime, and taking it with food are not essential instructions for nitroglycerin use. The priority is to administer it promptly when chest pain occurs to achieve optimal therapeutic effects.
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