Clostridium difficile infection
ICD-10 A04.7 · ICD-11 1A04

Non-Severe CDI: When Tapering Vancomycin or Fidaxomicin Does Not Achieve Sustained Cure

This protocol addresses Clostridioides difficile infection in patients classified as non-severe at diagnosis who have experienced a further recurrence — specifically those whose prior first-recurrence treatment did not result in sustained symptomatic cure.

Non-Severe Classification Criteria

White blood cell count below 15,000 cells/mm3 and serum creatinine 1.5 mg/dL or below — the thresholds that define non-severe CDI at initial presentation.

Prior Treatment — Failure Condition

The preceding step used tapering/pulsed-dose vancomycin or fidaxomicin to manage a first CDI recurrence. This protocol is indicated when that treatment did not achieve the required outcome: sustained symptomatic cure with initial resolution of diarrhea and no evidence of further CDI recurrence.

Treatment Approach at This Stage

Fecal microbiota transplantation (FMT) is the recommended intervention for patients reaching this stage of CDI recurrence. The full protocol specifies how it should be delivered and under what circumstances alternative delivery methods apply.

Instant Access to Structured Evidence-Based Regimens

References

DOI: 10.14309/ajg.0000000000001278

We recommend the following criteria, which are predictive of unfavorable outcomes, be used to classify severe C. difficile infection at the time of diagnosis: white blood cell (WBC) ≥15,000 cells/mm3 or serum creatinine >1.5 mg/dL.

We recommend patients experiencing their second or further recurrence of CDI be treated with FMT to prevent further recurrences (strong recommendation, moderate quality of evidence).

We recommend FMT be delivered through colonoscopy (strong recommendation, moderate quality of evidence) or capsules (strong recommendation, moderate quality of evidence) for treatment of rCDI; we suggest delivery by enema if other methods are unavailable (conditional recommendation, low quality of evidence).

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