Nursing Elites

1. A client receiving warfarin (Coumadin) therapy should have which of the following laboratory results reviewed to evaluate the effectiveness of the therapy?

• A. Complete blood count (CBC).
• B. Prothrombin time (PT).
• C. International normalized ratio (INR).
• D. Partial thromboplastin time (PTT).

Correct answer: C

Rationale: The correct answer is C: International normalized ratio (INR). The INR is the most appropriate laboratory result to review when evaluating the effectiveness of warfarin (Coumadin) therapy. Warfarin is an anticoagulant medication, and the INR helps determine if the dosage is within a therapeutic range to prevent clotting or bleeding complications. Choice A, a Complete Blood Count (CBC), provides information about the cellular components of blood but does not directly assess the anticoagulant effects of warfarin. Choice B, Prothrombin time (PT), measures the time it takes for blood to clot but is not as specific for monitoring warfarin therapy as the INR. Choice D, Partial Thromboplastin Time (PTT), evaluates the intrinsic pathway of coagulation and is not the primary test used to monitor warfarin therapy.

2. Why is lactated Ringer’s solution given to a patient experiencing vomiting and diarrhea?

• A. To increase interstitial and intracellular hydration
• B. To maintain plasma volume over time
• C. To pull water from the interstitial space into the extracellular fluid
• D. To replace water and electrolytes

Correct answer: D

Rationale: Lactated Ringer’s solution is an isotonic solution commonly used to replace water and electrolytes lost due to conditions like vomiting and diarrhea. It helps to restore fluid balance by replacing the lost volume and electrolytes. Option A is incorrect because hypotonic fluids, not lactated Ringer’s solution, increase interstitial and intracellular hydration. Option B is incorrect as colloidal solutions, not lactated Ringer’s solution, are used to maintain plasma volume over time. Option C is incorrect as hypertonic solutions, not lactated Ringer’s solution, pull water from the interstitial space into the extracellular fluid.

3. In a patient with asthma, which of the following is a primary goal of treatment?

• A. Improving oxygenation.
• B. Reducing inflammation.
• C. Improving airflow.
• D. Reducing airway constriction.

Correct answer: C

Rationale: The primary goal in the treatment of asthma is to improve airflow. Asthma is characterized by airway inflammation, constriction, and increased mucus production, leading to airflow limitation. Improving airflow helps ensure adequate oxygenation and reduces symptoms. While reducing inflammation and airway constriction are important aspects of asthma management, the primary goal is to optimize airflow to improve respiratory function and quality of life.

4. The nurse is caring for a newly admitted patient who will receive digoxin to treat a cardiac dysrhythmia. The patient takes hydrochlorothiazide (HydroDIURIL) and reports regular use of over-the-counter laxatives. Before administering the first dose of digoxin, the nurse will review the patient’s electrolytes with careful attention to the levels of which electrolytes?

• A. Calcium and magnesium
• B. Sodium and calcium
• C. Potassium and chloride
• D. Potassium and magnesium

Correct answer: D

Rationale: Before administering digoxin, the nurse must review the patient's electrolyte levels, focusing on potassium and magnesium. Hypomagnesemia, similar to hypokalemia, can enhance the action of digitalis and lead to digitalis toxicity. Laxatives and diuretics, like hydrochlorothiazide, can deplete both potassium and magnesium. Therefore, monitoring these electrolytes is crucial to prevent potential adverse effects associated with digoxin therapy. Choice A (Calcium and magnesium) is incorrect because calcium levels are not specifically mentioned as crucial for digoxin therapy. Choice B (Sodium and calcium) is incorrect as sodium is not typically monitored in relation to digoxin therapy. Choice C (Potassium and chloride) is incorrect because although potassium is vital, chloride is not typically associated with digoxin therapy.

5. To help minimize the risk of postoperative respiratory complications after a hypophysectomy, during preoperative teaching, the nurse should instruct the client how to:

• A. Use incentive spirometry.
• B. Turn in bed.
• C. Take deep breaths.
• D. Cough.

Correct answer: C

Rationale: The correct answer is to instruct the client on how to take deep breaths. Deep breathing exercises are essential in preventing postoperative respiratory complications like atelectasis by promoting lung expansion. Using incentive spirometry is a more specific and advanced method of promoting deep breathing and lung expansion, making it a better choice than just turning in bed. While turning in bed may help with overall comfort and positioning, it is not as directly related to respiratory complications as deep breathing exercises. Coughing, although important for clearing secretions, is not as effective in preventing atelectasis as deep breathing exercises.

Similar Questions