Management of Polyethylene Glycol (PEG) Bowel Preparation in Patients on Vancomycin for C. difficile Prophylaxis

Rationale for Continuing PEG Preparation

The superior pharmacokinetic properties of vancomycin allow it to remain concentrated in the gut lumen, which explains its effectiveness in C. difficile infection 2

Vancomycin is the preferred agent for C. difficile prophylaxis due to its superior efficacy compared to metronidazole, as recommended by the Infectious Diseases Society of America 3, 4

After completion of the PEG preparation, ensure the patient resumes their vancomycin prophylaxis schedule promptly, as advised by the American College of Gastroenterology 1
Monitor for signs of C. difficile recurrence following the procedure, such as three or more unformed stools in 24 hours with positive C. difficile testing, as recommended by the American Gastroenterological Association 5
Be aware that patients with a history of multiple C. difficile recurrences are at higher risk and may require closer monitoring, according to the Infectious Diseases Society of America 4, 5
Consider the risk-benefit ratio of the procedure requiring bowel preparation, as any disruption to the gut microbiome could theoretically increase risk of C. difficile recurrence, as noted by the American College of Gastroenterology 6

If the patient experiences recurrent C. difficile infection despite prophylaxis, consider alternative approaches such as fidaxomicin or fecal microbiota transplantation, as recommended by the Infectious Diseases Society of America and the American Gastroenterological Association 4, 5