Proton Pump Inhibitors · Pharmacology

Long-term use of PPIs has been associated with an increased risk of which gastrointestinal infection?

  1. Helicobacter pylori
  2. Clostridioides difficile
  3. Giardia lamblia
  4. Hepatitis A
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Correct answer: Clostridioides difficile

Gastric acid serves as a primary defense against ingested pathogens. By significantly raising gastric pH, PPIs facilitate the colonization of the colon by C. difficile, leading to associated diarrhea and colitis.

Difficulty: Medium Question 6 of 20

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