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Ptcb Flashcards: Drug Interactions

Study Drug Interactions in Ptcb with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

QUESTION

What interaction occurs when warfarin is taken with trimethoprim-sulfamethoxazole (TMP-SMX)?

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ANSWER

Increased INR and bleeding. TMP-SMX inhibits CYP2C9 metabolism of warfarin, elevating its levels and anticoagulant activity.

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Ptcb: Medications

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What this deck covers

This deck focuses on Drug Interactions, giving you a quick way to review the definitions, rules, and examples that matter most for Ptcb.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Practice questions

1 of 20Practice questions for this set
A patient's profile shows they are taking warfarin. A new prescription for sulfamethoxazole/trimethoprim is entered. The computer system flags a potential interaction. This interaction increases the risk of which of the following?
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