Nursing Elites

1. What lab value should a healthcare provider monitor for a patient on warfarin therapy?

• A. Potassium
• B. PT/INR
• C. Sodium
• D. Calcium

Correct answer: B

Rationale: The correct answer is B: PT/INR. When a patient is on warfarin therapy, healthcare providers monitor the PT/INR levels to evaluate the effectiveness of the treatment and assess the risk of bleeding. Monitoring potassium, sodium, or calcium levels is not directly related to warfarin therapy and would not provide the necessary information needed to manage the medication effectively.

2. While caring for a client with an arterial line, which of the following actions should the nurse take?

• A. Level the transducer with the client's phlebotomy site
• B. Flush the arterial line every 8 hours
• C. Obtain a blood sample for arterial blood gases
• D. Keep the client's hand elevated above the heart level

Correct answer: C

Rationale: Obtaining arterial blood gases is a crucial nursing action when caring for a client with an arterial line. This procedure helps assess the client's oxygenation status and acid-base balance accurately. Leveling the transducer with the client's phlebotomy site (A) is important for accurate pressure measurements, but it is not the primary action in this scenario. Flushing the arterial line every 8 hours (B) is a routine maintenance procedure and not the immediate priority. Keeping the client's hand elevated above the heart level (D) is a good practice to prevent swelling, but it is not directly related to the arterial line care in this case.

3. A client is receiving warfarin for atrial fibrillation. Which of the following laboratory tests should the nurse expect to be ordered to monitor the effect of warfarin?

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

Correct answer: B

Rationale: The correct answer is B: International normalized ratio (INR). When a client is on warfarin therapy, the INR is monitored regularly to assess the anticoagulant effects of the medication. A therapeutic INR range for most indications is between 2.0 to 3.0. Choices A, C, and D are not typically used to monitor the effect of warfarin. Platelet count assesses the number of platelets in the blood, PT measures the clotting time of plasma, and PTT evaluates the intrinsic pathway of coagulation.

4. What is the best intervention for a patient experiencing respiratory distress?

• A. Administer oxygen
• B. Administer bronchodilators
• C. Administer IV fluids
• D. Reposition the patient

Correct answer: A

Rationale: Administering oxygen is the best intervention for a patient experiencing respiratory distress because it helps improve oxygenation. Oxygen therapy is the initial and priority intervention to ensure an adequate oxygen supply to the body tissues. Administering bronchodilators (Choice B) may be appropriate for specific respiratory conditions like asthma or COPD but is not the first-line intervention in all cases of respiratory distress. Administering IV fluids (Choice C) is not a standard intervention for respiratory distress unless there is an underlying cause like dehydration. Repositioning the patient (Choice D) can aid in optimizing ventilation but is not the primary intervention for respiratory distress.

5. Which lab value is critical for monitoring warfarin therapy?

• A. Monitor INR
• B. Monitor platelet count
• C. Monitor sodium levels
• D. Monitor calcium levels

Correct answer: A

Rationale: The correct answer is A: Monitor INR. INR (International Normalized Ratio) is crucial for monitoring warfarin therapy as it helps assess the therapeutic effectiveness and bleeding risks associated with the medication. INR measures the clotting tendency of blood, which is essential in determining the appropriate dosage of warfarin. Monitoring platelet count (B), sodium levels (C), or calcium levels (D) is not primarily used for assessing warfarin therapy. Platelet count is more relevant in assessing bleeding disorders, while sodium and calcium levels are typically monitored for different medical conditions unrelated to warfarin therapy.

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