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Difficulty: HardGastroenterology and Hepatology

Match each gastrointestinal or hepatobiliary clinical scenario with the most appropriate antimicrobial stewardship strategy or treatment plan.

  • A 45-year-old healthy man with CT-confirmed, mild uncomplicated acute diverticulitis who is afebrile and tolerating oral intake.Supportive outpatient care without antibiotics
  • A 58-year-old man with cirrhosis who completed 5 days of IV cefotaxime for an episode of spontaneous bacterial peritonitis and is now asymptomatic.Indefinite secondary prophylaxis with an oral antibiotic
  • A 62-year-old woman with a percutaneously drained pyogenic liver abscess (growing Klebsiella) who is clinically stable after 5 days of IV ceftriaxone.De-escalation to targeted oral antibiotics to complete a multi-week course
  • A 70-year-old woman with an initial, non-severe episode of Clostridioides difficile infection following clindamycin use.Targeted enteral antibiotic therapy for 10 days
  • A 50-year-old man with decompensated cirrhosis who is admitted to the ICU after successful endoscopic band ligation for acute variceal bleeding.Short-course intravenous antibiotic prophylaxis for 7 days

Answer

The correct matches align each distinct clinical scenario with its evidence-based antimicrobial duration, route, and indication based on current stewardship guidelines.
Each match accurately reflects current society guidelines and antimicrobial stewardship principles: observation for mild diverticulitis, de-escalation for stable abscesses, indefinite prophylaxis for resolved SBP, enteral agents for C. difficile, and short-course IV prophylaxis for cirrhotic GI bleeding.

Step-by-Step Solution

1
Analyze the acute diverticulitis scenario.
Identify mild, uncomplicated diverticulitis in an immunocompetent patient tolerating oral intake.
Recent guidelines favor avoiding unnecessary antibiotics in these specific patients, instead utilizing supportive outpatient care.
2
Evaluate the spontaneous bacterial peritonitis (SBP) scenario.
The patient has fully recovered from an initial episode of SBP and is ready for discharge.
SBP has a high recurrence rate; indefinite secondary prophylaxis with oral antibiotics is mandated.
3
Assess the pyogenic liver abscess scenario.
The patient is clinically stable after initial IV therapy, with known culture sensitivities.
Good antimicrobial stewardship requires de-escalating to oral therapy as soon as clinically feasible to complete the prolonged 4-6 week course.
4
Determine the Clostridioides difficile treatment plan.
The patient presents with a first-time, non-severe episode of C. difficile colitis.
Standard therapy involves targeted enteral (oral) administration of fidaxomicin or vancomycin for 10 days; IV antibiotics are ineffective for this indication.
5
Review the variceal bleeding scenario.
A patient with cirrhosis is admitted with an acute gastrointestinal hemorrhage.
GI bleeding in cirrhosis severely impairs immune function. A prophylactic 7-day course of IV ceftriaxone prevents translocational infections and improves survival.

Key Concept

Evidence-based antimicrobial stewardship and management in gastrointestinal and hepatobiliary infections
Estimated Time:2m 30s
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Topics

Gastroenterology and Hepatology

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