Examkin

Soru

Zorluk: OrtaGastroenterology and Hepatology

Appropriate antimicrobial stewardship is critical in gastroenterology to prevent resistance, adverse drug effects, and disease exacerbation. Match the following clinical presentations of gastrointestinal and hepatobiliary conditions with their correct antimicrobial management strategy.

  • A 28-year-old otherwise healthy patient with culture-confirmed non-typhoidal Salmonella gastroenteritis and resolving symptoms.Withhold antimicrobial therapy to avoid prolonging asymptomatic bacterial carriage in the gastrointestinal tract.
  • A 45-year-old patient with acute necrotizing pancreatitis demonstrating 40% sterile glandular necrosis on computed tomography.Avoid prophylactic antimicrobial agents entirely; manage primarily with fluid resuscitation and nutritional support.
  • A 55-year-old patient who is 24 hours post-uncomplicated laparoscopic cholecystectomy for acute calculous cholecystitis.Discontinue all perioperative antibiotics immediately, as adequate surgical source control has already been achieved.
  • A 22-year-old patient with acute bloody diarrhea, severe abdominal cramps, and a stool assay positive for Shiga toxin.Strictly withhold antibiotics to minimize the risk of inducing toxin release and precipitating hemolytic uremic syndrome.

Cevap

Non-typhoidal Salmonella requires withholding antibiotics to prevent prolonged carriage; sterile necrotizing pancreatitis requires avoiding prophylaxis to prevent resistance; post-cholecystectomy patients require stopping antibiotics at 24 hours due to source control; and STEC requires withholding antibiotics to prevent hemolytic uremic syndrome.
Each clinical scenario represents a specific high-yield indication where antibiotics must be actively withheld or discontinued to adhere to antimicrobial stewardship. STEC treatment with antibiotics risks HUS. Prophylaxis in sterile pancreatitis risks multidrug-resistant superinfection. Post-source control in cholecystitis requires antibiotic cessation. Finally, treating non-typhoidal Salmonella in healthy adults paradoxically prolongs fecal carriage.

Adım Adım Çözüm

1
Analyze the management of the patient with Shiga toxin-producing E. coli (STEC).
Match STEC to withholding antibiotics to minimize the risk of toxin release.
Antibiotic-induced bacterial lysis increases Shiga toxin release, precipitating hemolytic uremic syndrome (HUS).
2
Analyze the management of the patient with sterile necrotizing pancreatitis.
Match to avoiding prophylactic antimicrobial agents entirely.
Guidelines explicitly recommend against prophylaxis for sterile pancreatic necrosis to prevent the emergence of resistant strains and fungal superinfections.
3
Analyze the postoperative management of acute cholecystitis.
Match to discontinuing antibiotics immediately.
Surgical removal of the infected organ provides definitive source control, eliminating the need for continued antimicrobial therapy beyond the initial 24-hour perioperative window.
4
Analyze the management of resolving non-typhoidal Salmonella.
Match to withholding therapy to avoid prolonged gastrointestinal bacterial carriage.
Empiric antibiotics in healthy adults with this infection prolong fecal shedding of the bacteria and do not improve clinical outcomes.

Anahtar Kavram

Antimicrobial stewardship and specific contraindications for antibiotic use in gastrointestinal infections and inflammatory conditions.
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Konular

Gastroenterology and Hepatology

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