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Updated: May 29, 2026

A Protocol to Characterize the Morphological Changes of Clostridium difficile in Response to Antibiotic Treatment
Published on: May 25, 2017
Current Treatment Options for Severe Clostridium difficile-associated Disease.
Edie P Shen1, Christina M Surawicz
1Dr. Shen is Acting Instructor of General Internal Medicine at the University of Washington in Seattle, Washington, where Dr. Surawicz serves as Professor of Medicine in the Division of Gastroenterology.
Treatment for Clostridium difficile infection (CDI) requires careful consideration, especially with the rise of severe cases. Guidelines suggest metronidazole for mild CDI, but vancomycin is crucial for severe or refractory infections.
Area of Science:
- Infectious Diseases
- Gastroenterology
- Microbiology
Background:
- Emergence of hyper-virulent Clostridium difficile NAP1/027 strain leading to increased severity and poorer outcomes.
- Growing need for optimized treatment strategies in refractory Clostridium difficile infections (CDI).
- Limitations of current therapies in managing severe CDI cases.
Purpose of the Study:
- To review and emphasize appropriate treatment regimens for Clostridium difficile colitis.
- To outline therapeutic approaches based on disease severity and patient tolerance.
- To highlight the evolving management strategies for CDI in light of new strains.
Main Methods:
- Review of current clinical guidelines and literature on Clostridium difficile infection management.
- Analysis of treatment efficacy for metronidazole and vancomycin in mild, moderate, and severe CDI.
- Consideration of adjunctive therapies, including rectal vancomycin and intravenous metronidazole for specific patient groups.
Main Results:
- Oral metronidazole is effective for mild-to-moderate Clostridium difficile colitis.
- Vancomycin is recommended for severely ill patients or those unresponsive to metronidazole.
- Adjunctive rectal vancomycin and intravenous metronidazole may benefit patients with ileus.
Conclusions:
- Treatment decisions for Clostridium difficile infection must be tailored to disease severity.
- The rise of hyper-virulent strains necessitates a re-evaluation of standard treatment protocols.
- Early surgical consultation is vital for patients with severe or refractory Clostridium difficile colitis requiring colectomy.
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