The proton pump inhibitor Esomeprazole (Nexium) is prescribed for a client who incurred extensive burn injuries 5 days ago. Which nursing assessment would best evaluate the effectiveness of the drug?

A. Fecal Occult test: Proton pump inhibitors (PPIs) like esomeprazole are prescribed in burn patients primarily for stress ulcer prophylaxis, reducing gastric acid secretion and preventing gastrointestinal bleeding. A fecal occult blood test directly assesses for microscopic gastrointestinal bleeding, making it the most specific and objective measure. B. Stool frequency: Changes in stool frequency are not directly related to the effectiveness of PPIs. Esomeprazole does not influence bowel motility or diarrhea; assessing stool patterns would not provide meaningful information about gastric acid suppression or ulcer prevention. C. Abdominal distention: Abdominal distention may indicate ileus, obstruction, or fluid shifts, which are complications in burn patients, but it is not a reliable indicator of PPI effectiveness. Esomeprazole’s primary action is on gastric acid secretion rather than intestinal motility or distention. D. Bowel sounds: While auscultating bowel sounds assesses gastrointestinal motility, it does not reflect the acid-suppressing effect of PPIs or their ability to prevent stress ulcers. Effective monitoring requires evaluation of bleeding, not motility.