The nurse evaluates the effects of warfarin by monitoring what lab test?

Platelet count.

Activated thromboplastin time (APT).

Red blood count (RBC).

Prothrombin time (PT) and international normalized ratio (INR).

Answer and Explanation

The Correct Answer is D

Choice A rationale

Platelet count measures the number of platelets in the blood, which are essential for blood clotting. However, it is not specific to monitoring the anticoagulant effects of warfarin.

Choice B rationale

Activated thromboplastin time (APT) measures the intrinsic pathway of coagulation and is typically used to monitor heparin therapy, not warfarin.

Choice C rationale

Red blood count (RBC) measures the number of red blood cells in the blood, which can indicate anemia but is unrelated to the anticoagulant effects of warfarin.

Choice D rationale

Prothrombin time (PT) and international normalized ratio (INR) are specific tests used to monitor the anticoagulant effects of warfarin. PT measures the time it takes for blood to clot, and INR standardizes this measurement to ensure consistency across different laboratories.

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Correct Answer is C

Explanation

Choice A rationale

Poor self-care is not directly associated with reddened, bleeding gums in this context.

Choice B rationale

While aspirin can cause bleeding issues, the context here is related to seizure disorder and phenytoin.

Choice C rationale

Phenytoin, an anticonvulsant used to manage seizures, can cause gingival hyperplasia, leading to reddened and bleeding gums.

Choice D rationale

Hepatotoxicity is related to liver damage and does not present with reddened, bleeding gums.

A. 30 gtt/min. B. 33 gtt/min. C. 31 gtt/min. D. 32 gtt/min.

Correct Answer is A

Explanation

Step 1 is (120 mL ÷ 60 min) × 15 gtt/mL.

Step 2 is (2 mL/min) × 15 gtt/mL.

Step 3 is 30 gtt/min.

Final calculated answer is 30 gtt/min.

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The nurse evaluates the effects of warfarin by monitoring what lab test?

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Naxlex Comprehensive Predictor Exams

The nurse is caring for a patient that has seizure disorder.The nurse notes that the patient has reddened gums that bleed when oral care is given.The nurse recognizes this finding as:

Correct Answer is C

Explanation

Order: 1000ml D5W at 120ml/hr. Available: Macro drop 15ml/hr. What is the drip factor in drops per minute?

Correct Answer is A

Explanation

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