Warfarin sodium (Coumadin) is ordered for a client.
The client asks the nurse about dietary restrictions while taking this medication. Which of the following foods should be limited?
Wheat bread and butter.
Mangoes and tomatoes.
Spinach and salads.
Aged cheeses and wine.
The Correct Answer is C
This is because spinach and salads contain a lot of vitamin K, which can make warfarin less effective at preventing blood clots.

Vitamin K helps the blood to clot, so eating foods high in vitamin K can counteract the effect of warfarin.
Choice A is wrong because wheat bread and butter do not contain a lot of vitamin K and do not affect warfarin.
Choice B is wrong because mangoes and tomatoes do not contain a lot of vitamin K and do not affect warfarin.
Choice D is wrong because aged cheeses and wine do not contain a lot of vitamin K and do not affect warfarin.
It is important to keep a stable diet while taking warfarin and avoid sudden changes in the amount of vitamin K intake. Foods that are high in vitamin K include green leafy vegetables, chickpeas, liver, egg yolks, avocado, and olive oil.
These foods should be limited but not eliminated from the diet. Do not drink cranberry or grapefruit juice while taking warfarin as they can increase the risk of bleeding.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
The directive takes effect only if the client is incapable of personally making health care decisions. This statement demonstrates an understanding of health care proxy and care because it reflects the definition of a health care proxy as a person who can make health care decisions for the client only when the client is unable to communicate these themselves.
Choice A is wrong because the daughter does not have the authority to make all of the client’s health care decisions, only those that the client has not specified in advance or that are not covered by the living will.
Choice B is wrong because no extraordinary means, such as cardiopulmonary resuscitation, will be initiated only if the client has expressed this preference in a living will or a do-not-resuscitate order.
Choice D is wrong because the closest relative, such as the spouse, does not have to be consulted before the daughter in making health care decisions, unless the client has designated them as an alternate proxy.
Correct Answer is D
Explanation
I give the client his medications when the wife is grocery shopping. This statement would require the nurse to re-evaluate and correct the plan of care because home health aides are not allowed to administer medications in most states. Home health aides can only provide medication reminders, help put the medication into the hands of the user, or assist with self-administration of certain forms of medications.
Giving medications to the client without supervision or delegation by a registered nurse or physician is a violation of the scope of practice and could harm the client.
Choice A is wrong because removing throw rugs from the client’s walking path is a safety measure that can prevent falls and injuries for a client with Alzheimer’s disease.
Choice B is wrong because documenting activities with the client before leaving for the day is a professional responsibility that ensures continuity of care and accountability.
Choice C is wrong because contacting the nurse if there are any questions about the plan of care is a sign of good communication and collaboration that can enhance the quality of care for the client.
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