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.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Ask another nurse to check the medication dosage prior to administration is a good practice for double-checking dosages but does not ensure the right medication is given to the right client.
B. Use two client identifiers prior to administering the medication is essential to ensure the right medication is given to the right client. This helps prevent medication errors.
C. Verify a written order with the medication administration record is important but does not directly ensure the right medication is given to the right client.
D. Document the full name of the prescribed medication after administration is necessary for accurate record-keeping but does not ensure the right medication is given to the right client.
Correct Answer is B
Explanation
A. Blurred vision can be a side effect of many medications, but it is not a common adverse effect specifically associated with rifampin. Rifampin’s side effects are more commonly related to liver function and gastrointestinal issues.
B. Jaundice is a significant adverse effect of rifampin, indicating potential liver damage. Rifampin can cause hepatotoxicity, leading to elevated liver enzymes and bilirubin levels, which manifest as jaundice. Monitoring liver function tests is crucial for clients on rifampin to detect any early signs of liver damage.
C. Irregular heart rate is not typically associated with rifampin. While rifampin can interact with other medications that affect heart rate, it does not directly cause arrhythmias.
D. Constipation is not a common adverse effect of rifampin. Gastrointestinal side effects of rifampin usually include nausea, vomiting, and diarrhea rather than constipation.
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