Laboratory Test Results Indicate That Warfarin Anticoagulant Therapy Is Suddenly

question 27

Multiple Choice

Laboratory test results indicate that warfarin anticoagulant therapy is suddenly ineffective in a patient who has been taking the drug for an extended time.The nurse suspects an interaction with herbal medications.What type of interaction does the nurse suspect?

• A) Antagonistic drug interaction
• B) Synergistic drug interaction
• C) Idiosyncratic reaction
• D) Drug incompatibility

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