A nurse is caring for a client who is receiving warfarin therapy to prevent deep vein thrombosis. Which of the following medications should the nurse have available in the event of an overdose?

Epinephrine

Vitamin K

Atropine

Protamine

Answer and Explanation

The Correct Answer is B

Choice A reason : Epinephrine is an adrenergic agonist primarily used in the management of cardiac arrest, anaphylaxis, and severe asthma attacks. It is not used to reverse the effects of warfarin overdose. Warfarin acts as an anticoagulant by inhibiting vitamin K-dependent clotting factors, and epinephrine has no role in this mechanism.

Choice B reason : Vitamin K is the antidote for warfarin toxicity. Warfarin works by inhibiting the vitamin K-dependent clotting factors II, VII, IX, and X. In the event of an overdose, vitamin K is administered to reverse the anticoagulant effects of warfarin and restore the clotting factor levels to normal. The administration can be oral or intravenous, depending on the severity of the overdose and the urgency of the situation.

Choice C reason : Atropine is an anticholinergic drug used to treat bradycardia (slow heart rate) and as an antidote for organophosphate poisoning. It does not have a role in reversing warfarin overdose as it does not affect the clotting cascade or vitamin K metabolism.

Choice D reason : Protamine is used to reverse the effects of heparin, another anticoagulant, but not warfarin. Protamine sulfate binds to heparin, forming a stable complex and neutralizing its anticoagulant effects. Since warfarin's mechanism of action is different from heparin's, protamine is not effective in reversing warfarin toxicity.

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Correct Answer is C

Explanation

Choice A reason : The statement that warfarin dissolves clots in the bloodstream is incorrect. Warfarin does not dissolve existing clots. Instead, it is an anticoagulant that works by decreasing the production of certain clotting factors in the blood, which helps prevent the formation of new clots.

Choice B reason : This statement is not accurate regarding the action of warfarin. Warfarin does not affect the electrical impulses of the heart. Medications that slow the response of the ventricles to fast atrial impulses are typically antiarrhythmic drugs, not anticoagulants like warfarin.

Choice C reason : This is the correct statement. Warfarin is prescribed for clients with atrial fibrillation to reduce the risk of stroke. Atrial fibrillation increases the risk of forming blood clots in the heart, which can then travel to the brain, causing a stroke. Warfarin's anticoagulant effect helps to prevent these clots from forming.

Choice D reason : Warfarin does not help maintain a normal heart rhythm. It is not an antiarrhythmic drug but an anticoagulant. The purpose of warfarin in atrial fibrillation is to prevent stroke by reducing the risk of clot formation, not to correct the heart rhythm.

A. Set your goal body weight within 25% of your ideal body weight. B. Limit alcohol consumption to two drinks a day for men and one drink a day for women when hypertensive. C. Plan to lower sodium intake to less than 2,300 mg each day. D. Plan to have potassium blood levels checked when taking thiazide diuretics. E. None F. None

Correct Answer is C

Explanation

Choice A reason : Setting a goal body weight within 25% of the ideal body weight can be misleading. The ideal body weight should be determined based on body mass index (BMI), considering the individual's height and weight. A BMI of 18.5 to 24.9 is considered normal.

Choice B reason : This is a general guideline for alcohol consumption, but for individuals with hypertension, it is often recommended to limit alcohol intake even further to help manage blood pressure

Choice C reason : This is a key recommendation for managing hypertension. Reducing sodium intake helps lower blood pressure and is a widely accepted guideline

Choice D reason : Monitoring potassium levels is crucial when taking thiazide diuretics because these medications can decrease potassium levels in the blood, leading to hypokalemia.

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A nurse is caring for a client who is receiving warfarin therapy to prevent deep vein thrombosis. Which of the following medications should the nurse have available in the event of an overdose?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Correct Answer is C

Explanation

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Correct Answer is C

Explanation

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