A nurse is caring for a client who is taking warfarin and reports taking several new herbal supplements. The nurse should identify that which of the following supplements is contraindicated for concurrent use with warfarin?
Valerian
Probiotics
Ginkgo biloba
Coenzyme Q10
The Correct Answer is C
A. Valerian is an herbal supplement commonly used for its sedative effects. It does not have a significant interaction with warfarin and is not contraindicated for concurrent use.
B. Probiotics are generally safe to use with warfarin and do not have a significant impact on its anticoagulant effects. They are not contraindicated for concurrent use.
C. Ginkgo biloba is known to increase the risk of bleeding when taken with warfarin. It has antiplatelet effects that can enhance the anticoagulant effects of warfarin, leading to an increased risk of bleeding complications. Therefore, it is contraindicated for concurrent use with warfarin.
D. Coenzyme Q10 is structurally similar to vitamin K and can potentially reduce the effectiveness of warfarin. However, it is not as strongly contraindicated as ginkgo biloba, which has a more pronounced effect on bleeding risk.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Increased appetite can be a positive sign but is not a direct indicator of spironolactone’s effectiveness in treating cirrhosis-related complications.
B. Decreased jaundice is a positive sign but is not the primary indicator of spironolactone’s effectiveness. Jaundice is more directly related to liver function.
C. Increased energy can indicate overall improvement but is not specific to the effects of spironolactone.
D. Decreased ascites is a direct indicator that spironolactone is effective. Spironolactone is a diuretic used to reduce fluid accumulation in the abdomen (ascites) associated with liver cirrhosis. A reduction in ascites indicates that the medication is working as intended.
Correct Answer is A
Explanation
A. Taking a high-ceiling diuretic, such as furosemide, can lead to hypokalemia (low potassium levels), which increases the risk of digoxin toxicity. Low potassium levels enhance the effects of digoxin on the heart, making toxicity more likely.
B. Taking an HMG-CoA reductase inhibitor (statin) is not directly related to digoxin toxicity. Statins are used to lower cholesterol levels and do not significantly interact with digoxin.
C. Having a 10-year history of COPD does not predispose a client to digoxin toxicity. COPD affects the respiratory system and is not directly related to digoxin metabolism or excretion.
D. Having a prolapsed mitral valve is a cardiac condition but does not specifically increase the risk of digoxin toxicity. The primary concern with digoxin toxicity is electrolyte imbalances, particularly potassium levels.
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