A nurse is teaching a client who takes warfarin daily. Which of the following statements by the client indicates a need for further teaching?
I eat a green salad every night with dinner.
I take this medication at the same time each day.
I have started taking ginger root to treat my joint stiffness.
I had my INR checked three weeks ago.
The Correct Answer is C
Choice A reason: Eating a green salad every night with dinner is not the statement that indicates a need for further teaching. This is a consistent and balanced dietary choice for the client, as long as the amount of vitamin K in the salad is not excessive or variable. Vitamin K is a nutrient that helps the blood to clot and can interfere with the action of warfarin, which is an anticoagulant that inhibits the formation of blood clots. The client should avoid sudden changes in their intake of vitamin K and inform the provider of any dietary modifications.
Choice B reason: Taking this medication at the same time each day is not the statement that indicates a need for further teaching. This is a correct and important instruction for the client, as it helps to maintain a steady and effective level of warfarin in the blood. Warfarin has a narrow therapeutic range and requires frequent monitoring and dose adjustment. The client should take the medication as prescribed and avoid missing or skipping doses.
Choice C reason: Starting to take ginger root to treat joint stiffness is the statement that indicates a need for further teaching. This is a risky and potentially harmful herbal supplement for the client, as it can interact with warfarin and increase its anticoagulant effect. Ginger root has antiplatelet and fibrinolytic properties, which can inhibit the formation of blood clots and enhance the breakdown of fibrin, a protein that stabilizes blood clots. Taking ginger root with warfarin can increase the risk of bleeding and bruising and alter the international normalized ratio (INR), which is a measure of the blood's clotting ability. The client should avoid taking ginger root and other herbal supplements without consulting the provider.
Choice D reason: Having the INR checked three weeks ago is not the statement that indicates a need for further teaching. This is a reasonable and appropriate frequency for the client, depending on their stability and response to warfarin therapy. The INR is a blood test that measures the time it takes for the blood to clot and indicates the effectiveness of warfarin. The target INR range for most clients is 2 to 3, but it may vary depending on the indication and the risk of bleeding. The client should have their INR checked regularly and follow the provider's orders and the protocol for dose adjustment.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: Atropine is not the correct answer, as it is an anticholinergic medication that is used to treat bradycardia, not warfarin overdose. Atropine has no effect on the INR or the coagulation cascade.
Choice B reason: Epinephrine is not the correct answer, as it is a catecholamine medication that is used to treat anaphylaxis, cardiac arrest, or severe hypotension, not warfarin overdose. Epinephrine has no effect on the INR or the coagulation cascade.
Choice C reason: Vitamin K is the correct answer, as it is the antidote for warfarin overdose. Vitamin K is a fat-soluble vitamin that is essential for the synthesis of clotting factors II, VII, IX, and X. Vitamin K can reverse the effects of warfarin and lower the INR to a therapeutic range.
Choice D reason: Protamine is not the correct answer, as it is the antidote for heparin overdose, not warfarin overdose. Protamine is a protein that binds to and neutralizes heparin, but has no effect on warfarin or the INR.
Correct Answer is A
Explanation
Choice A reason: Grapefruit juice should be avoided while taking verapamil, as it can increase the blood levels of the medication and cause adverse effects such as hypotension, bradycardia, and dizziness. Grapefruit juice inhibits the enzyme that metabolizes verapamil in the liver, leading to higher concentrations of the drug in the bloodstream.
Choice B reason: Orange juice is not a contraindication for verapamil, as it does not affect the metabolism or absorption of the medication. Orange juice is a good source of vitamin C and potassium, which may benefit clients with hypertension.
Choice C reason: Milk is not a contraindication for verapamil, as it does not affect the metabolism or absorption of the medication. Milk is a good source of calcium and protein, which may benefit clients with hypertension.
Choice D reason: Coffee is not a contraindication for verapamil, as it does not affect the metabolism or absorption of the medication. However, coffee contains caffeine, which is a stimulant that can increase the heart rate and blood pressure. Therefore, clients with hypertension should limit their intake of caffeine and other stimulants.
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