A client taking warfarin (Coumadin) should be instructed to avoid herbal supplements such as green tea, ginkgo, feverfew, garlic, and ginger because these could:
Increase the risk for bleeding
Cause severe headache
Decrease the effects of the warfarin (Coumadin)
Cause severe hypotension
The Correct Answer is A
A. Increase the risk for bleeding: Herbal supplements like green tea, ginkgo, feverfew, garlic, and ginger can potentiate the effects of warfarin by enhancing its anticoagulant properties. This increases the risk of bleeding, as warfarin itself is a blood thinner designed to prevent clot formation. These herbs can further inhibit platelet aggregation or enhance anticoagulation, leading to a higher risk of bleeding complications.
B. Cause severe headache: While some herbal supplements can cause headaches as a side effect, this is not the primary concern when combined with warfarin. The interaction between these herbs and warfarin does not commonly result in severe headaches. The primary issue is the increased risk of bleeding.
C. Decrease the effects of the warfarin (Coumadin): These particular herbal supplements do not generally decrease the effects of warfarin. In fact, they are more likely to increase its anticoagulant effects. Some other substances might interfere with warfarin's efficacy, but the herbs listed are known to enhance its bleeding risk.
D. Cause severe hypotension: Severe hypotension is not a common result of combining these herbal supplements with warfarin. The primary interaction is related to the blood-thinning effects, not to blood pressure regulation. Herbal supplements that might affect blood pressure are not typically those that interact significantly with warfarin in this manner.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. To prevent overuse of prescription medications: While some patients may use herbal therapies as an alternative to avoid overuse of prescription medications, this is not the primary reason for the widespread use of herbal therapies. People often turn to herbal remedies for their perceived natural benefits and to complement conventional treatments, rather than to prevent overuse.
B. Because herbal therapies are so much safer than manmade drugs: This is a common misconception. Herbal therapies are not necessarily safer than prescription drugs. They can have potent effects and interact with medications, potentially causing adverse reactions. The safety of herbal remedies varies widely depending on the specific herb and its use.
C. To increase feelings of wellness and promote holistic treatment: Many patients use herbal therapies as part of a holistic approach to health. They seek to improve overall wellness, balance, and harmony in their body, mind, and spirit. Herbal therapies are often integrated into a lifestyle that values natural and preventive health measures.
D. Because herbal therapies are much more regulated than prescription drugs: This statement is incorrect. Herbal therapies are generally less regulated than prescription drugs. In many countries, herbal supplements are not subject to the same rigorous testing and approval processes as prescription medications, leading to variability in quality and potency.
Correct Answer is C
Explanation
A. Nausea and vomiting: Nausea and vomiting can occur with epoetin alfa, but it's not the most common side effect.
B. Orthostatic hypotension: This is not a common side effect of epoetin alfa. Orthostatic hypotension is a decrease in blood pressure upon standing.
C. Hypertension: Epoetin alfa stimulates the production of red blood cells. When the red blood cell count increases too quickly, it can lead to increased blood pressure, which is the most common adverse effect.
D. Dizziness: Dizziness can occur with epoetin alfa, but it's less common than hypertension.
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