Therapy of antibiotic-associated pseudomembranous colitis

Area of Science:

• Gastroenterology
• Infectious Diseases
• Pharmacology

Background:

• Antibiotic-associated pseudomembranous colitis is a serious gastrointestinal condition.
• Cholestyramine is an ion-exchange resin used for bile acid binding.

Observation:

• Seven patients with pseudomembranous colitis received oral cholestyramine.
• Clinical response to cholestyramine was inconsistent, with only one patient achieving a satisfactory outcome.
• Five patients experienced persistent systemic symptoms like fever and leukocytosis during cholestyramine therapy.

Findings:

• Six of seven patients reported a decrease in daily stool frequency during cholestyramine treatment.
• All patients demonstrated persistent cytopathic toxin in stool samples after 3-7 days of cholestyramine therapy.
• Subsequent treatment with oral vancomycin in six patients led to rapid clinical improvement and toxin clearance.

Implications:

• Cholestyramine monotherapy may not be sufficient for treating antibiotic-associated pseudomembranous colitis.
• The persistence of toxin suggests cholestyramine does not effectively neutralize or eliminate the causative agent.
• Oral vancomycin appears to be a more effective treatment option, indicated by prompt clinical recovery and toxin eradication.