Oral Absorption of Enteral Vancomycin in a Child with Clostridium difficile Colitis and Renal Impairment

Area of Science:

• Pharmacology
• Pediatric Infectious Diseases
• Nephrology

Background:

• Vancomycin is typically administered enterally for Clostridium difficile infections, with minimal systemic absorption expected.
• Pediatric patients with Clostridium difficile colitis and renal insufficiency present unique challenges in antibiotic management.

Observation:

• A 2-year-old patient with C. difficile colitis and renal insufficiency received enteral vancomycin.
• Measurable systemic vancomycin concentrations (up to 17.8 mg/L) were observed despite enteral administration.

Findings:

• Systemic absorption of enteral vancomycin was documented in a pediatric patient with renal insufficiency.
• Vancomycin absorption diminished as the patient's C. difficile colitis improved, indicating a transient absorption pattern.

Implications:

• This case highlights the potential for significant systemic absorption of enteral vancomycin in specific pediatric populations.
• Monitoring systemic vancomycin levels may be warranted in pediatric patients with renal impairment and C. difficile infection.
• Further research into the mechanisms and clinical significance of this rare phenomenon is needed.