A nurse is preparing to administer a daily dose of warfarin to a client. Which of the following laboratory values should the nurse check prior to administration?

WBC

INR

Platelets

АPTT

Answer and Explanation

The Correct Answer is B

A. WBC: White blood cell count is unrelated to warfarin therapy.
B. INR: Warfarin’s anticoagulant effect is monitored using the International Normalized Ratio (INR). A therapeutic INR range is typically 2–3 for most indications.
C. Platelets: While platelets are important for overall clotting, INR is the specific measure for warfarin.
D. APTT: Activated partial thromboplastin time (APTT) is used to monitor heparin, not warfarin.

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Correct Answer is D

Explanation

A. Dry cough: This is not typically associated with lithium toxicity and may indicate another issue, such as a respiratory infection.
B. Elevated blood pressure: Lithium toxicity usually results in hypotension, not elevated blood pressure.
C. Stooped posture: This is not a typical sign of lithium toxicity.
D. Slurred speech: Slurred speech can be an early sign of lithium toxicity, indicating that the medication level is too high.

Correct Answer is ["0.85"]

Explanation

Volume to administer = Prescribed dose/ available concentration

= 17, 000 units/20, 000 units/mL

= 0.85 mL

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A nurse is preparing to administer a daily dose of warfarin to a client. Which of the following laboratory values should the nurse check prior to administration?

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Naxlex Comprehensive Predictor Exams

A nurse in a mental health facility is collecting data from a client taking lithium. Which of the following information should the nurse report to the provider as an indication of lithium toxicity?

Correct Answer is D

Explanation

A nurse is preparing to administer 17,000 units heparin subcutaneously. Available is heparin 20,000 units/mL. How many mL should the nurse administer? (Round the answer to the nearest hundredth. Use a leading zero if applicable. Do not use a trailing zero.)

Correct Answer is ["0.85"]

Explanation

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