Which plant in the miscellaneous cardiotoxicity category is represented by Japanese and English yews?

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Get ready for the ACVPM Toxicology Exam with our comprehensive quiz. Enhance your knowledge with multiple-choice questions and detailed explanations. Prepare effectively for your certification exam!

Multiple Choice

Which plant in the miscellaneous cardiotoxicity category is represented by Japanese and English yews?

Explanation:
Yew plants are classic cardiotoxins because they contain taxine alkaloids that disrupt the heart’s electrical conduction. Ingestion of Japanese yew or English yew (Taxus species) can block cardiac conduction, leading to severe bradycardia, heart block, and possibly sudden death. This mechanism is why yews are the representative plant in the miscellaneous cardiotoxicity group. Other options cause different toxic effects—one is primarily a strong laxative, another leads to milk sickness from tremetol, and another involves different cardiac toxins—so they don’t fit the Taxus-related cardiotoxic mechanism.

Yew plants are classic cardiotoxins because they contain taxine alkaloids that disrupt the heart’s electrical conduction. Ingestion of Japanese yew or English yew (Taxus species) can block cardiac conduction, leading to severe bradycardia, heart block, and possibly sudden death. This mechanism is why yews are the representative plant in the miscellaneous cardiotoxicity group. Other options cause different toxic effects—one is primarily a strong laxative, another leads to milk sickness from tremetol, and another involves different cardiac toxins—so they don’t fit the Taxus-related cardiotoxic mechanism.

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