Nursing Elites

1. A nurse is assessing a client who has a history of atrial fibrillation and is receiving warfarin. Which of the following laboratory values should the nurse monitor to determine the effectiveness of the warfarin?

• A. Platelet count
• B. International normalized ratio (INR)
• C. Bleeding time
• D. Partial thromboplastin time (PTT)

Correct answer: B

Rationale: The correct answer is B: International normalized ratio (INR). The INR is used to monitor the effectiveness of warfarin therapy. A higher INR indicates a longer time it takes for the blood to clot, which is desirable in patients receiving warfarin to prevent blood clots. Platelet count (Choice A) assesses the number of platelets in the blood and is not directly related to warfarin therapy. Bleeding time (Choice C) evaluates the time it takes for a person to stop bleeding after a standardized wound, but it is not specific to monitoring warfarin effectiveness. Partial thromboplastin time (PTT) (Choice D) is more commonly used to monitor heparin therapy, not warfarin.

2. A nurse is preparing to administer a pneumococcal vaccine. Which of the following should the nurse verify?

• A. Client's allergy to eggs
• B. Client's current medications
• C. Client's vaccination history
• D. Client's blood pressure

Correct answer: C

Rationale: The correct answer is C: Client's vaccination history. Before administering a pneumococcal vaccine, the nurse should verify the client's vaccination history to ensure they are due for the vaccine. Verifying the vaccination history helps prevent unnecessary vaccinations and ensures that the client receives the appropriate immunization at the right time. Choices A, B, and D are not directly related to the administration of the pneumococcal vaccine. Checking for allergies to eggs may be important for other vaccines, but it is not specifically relevant to pneumococcal vaccination. The client's current medications and blood pressure are important for general health assessment but are not directly related to verifying the need for a pneumococcal vaccine.

3. A healthcare professional is preparing to administer an IM injection to a 4-month-old infant. Which of the following injection sites should the healthcare professional use?

• A. Ventrogluteal
• B. Deltoid
• C. Dorsogluteal
• D. Vastus lateralis

Correct answer: D

Rationale: The vastus lateralis is the preferred site for IM injections in infants under 1 year of age because it is well developed and easily accessible compared to other muscle groups. The ventrogluteal and deltoid sites are not typically used for infants due to muscle development and size. The dorsogluteal site is not recommended for infants or young children due to its proximity to major nerves and blood vessels.

4. A nurse is caring for a client who has chronic kidney disease. The nurse should identify which of the following laboratory values as an indication for hemodialysis?

• A. Glomerular filtration rate of 14 mL/min
• B. BUN 16 mg/dL
• C. Serum magnesium 1.8 mg/dL
• D. Serum phosphorus 4.0 mg/dL

Correct answer: A

Rationale: A glomerular filtration rate (GFR) of 14 mL/min indicates severely impaired kidney function, often necessitating hemodialysis to support renal function and manage fluid and electrolyte balance. A BUN level of 16 mg/dL falls within the normal range (7-20 mg/dL) and does not specifically indicate the need for hemodialysis. Serum magnesium at 1.8 mg/dL and serum phosphorus at 4.0 mg/dL are also within normal ranges and do not typically prompt the immediate need for hemodialysis in chronic kidney disease.

5. A client is newly diagnosed with hypothyroidism and prescribed levothyroxine. Which of the following instructions should the nurse include?

• A. Take the medication with food.
• B. Take the medication in the evening.
• C. Take the medication on an empty stomach.
• D. Take the medication only when experiencing symptoms.

Correct answer: C

Rationale: The correct instruction is to take levothyroxine on an empty stomach. This is necessary for proper absorption and effectiveness of the medication. Taking it with food can interfere with absorption. Timing is also crucial; it is usually recommended to take levothyroxine in the morning to prevent potential interactions with food and other medications throughout the day. Taking the medication in the evening may lead to sleep disturbances. Lastly, waiting to take the medication only when symptoms occur is not appropriate as levothyroxine is typically taken regularly to maintain thyroid hormone levels within the body.

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