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recurrent C diff

fecal microbial transplant methods

How FMT stool transfer methods for C. diff have evolved

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FMT stool transfer methodsFecal microbial transplant (FMT), also known as stool transfer or stool transplant or fecal transplant, is a revolutionary treatment for C. diff patients that is constantly evolving. While the treatment at one time required a colonoscopy, there are now other options. In the following interview, C. Diff In 30 Minutes author and Harvard Medical School Professor J. Thomas Lamont discusses new FMT stool transfer methods.

Question: In an earlier update to C. Diff In 30 Minutes, you introduced the concept of FMT, using stool transfers from family members. In the new second edition, you describe the stool transfer `methods evolving significantly. How so?

Lamont: In the past, FMT required a stool donor, typically a family member, who was free of any infections and who was willing to donate a stool that was used to prepare a treatment for recurrent C. difficile. A suspension of the donor stool was injected into the patient with recurrent disease via the colonoscope. This was highly effective treatment but many patients were not happy to have a solution of feces introduced into their body.

The current FMT treatment does not require a stool donor or the injection of fresh feces. Instead the treatment involves injection at the time of colonoscopy of frozen feces in capsules provided from a biotech company. This form of treatment can also be administered orally, or by swallowing the capsules thus avoiding the necessity of a colonoscopy.

Question: Recurrent C. diff sounds terrible for patients and their families. Is there any hope for managing this condition?

Lamont: I tell all my patients with recurrent C. difficile that we can provide effective treatment using several techniques. More than 90% of patients with recurrent C. difficile can be effectively managed by FMT as described above.

Another small percentage of patients who fail FMT or do not wish to have it can be managed by daily dosing with small amounts of vancomycin which prevent recurrent disease. These patients do not have any symptoms of diarrhea or abdominal pain and can lead a normal life simply by taking a single 125 mg dose of vancomycin every day.

Disclaimer: This publication is designed to provide accurate and authoritative information in regard to the subject matter covered. Nothing in this publication is intended to constitute medical advice, a clinical diagnosis, or treatment. The information in this publication is not intended as a recommendation or endorsement of any specific tests, products, procedures, opinions, or other information that may be mentioned. The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies.

Recurrent C. diff: Why does C. diff sometimes keep coming back?

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Recurrent C. diff: Description and risk factors

Earlier we looked at the C. diff case study of Al, an electrician who contracted Clostridium difficile after receiving dental treatment which required antibiotics. Al’s case illustrates several aspects of recurrent C. diff, a huge problem that occurs in up to 30% of patients who get C. diff after the initial treatment with the antibiotics Flagyl or Vanco. Recurrent C. diff is a huge problem:

  • In cases of recurrent C. diff, the infection comes back or recurs within days or weeks of stopping the antibiotics.
  • Some unlucky patients experience ten or more recurrences and start to think they will never recover.

After initial “cure” of Clostridium difficile with antibiotics, about 15-25% of patients develop a recurrence within a few days to several months. The chance of a recurrence depends in large part on the type of antibiotic being taken, such as Flagyl, Vanco, or Dificid, as well as the age of the patient.

This repeat infection can keep on recurring, even after multiple courses of antibiotics. We have seen some unfortunate patients with 10 or more attacks of C. diff in a two-year period. It can lead to chronic diarrhea, weight loss, and diminished quality of life.

We think that recurrence of C. diff depends on a “Perfect Storm” of several factors:

  • Simultaneous failure of the immune system with inadequate antibody formation
  • Failure of the colonic flora to regenerate, owing to exposure to antibiotics.

Failure of the immune system to generate an antibody response is quite common after age 60. The older the patient, the weaker the response to an infection or to vaccination:

Recurrent C. diff chart showing age as a risk factor

During an initial bout of C. diff infection, a healthy immune system develops antibodies that protect against another bout of C. diff infection. But after age 50 or so, this immune response is diminished. That’s why recurrent C. diff infections are much more common in 80 year olds (35%) vs. 40 year olds (10%).

This article about recurrent C. diff was excerpted from C. Diff In 30 Minutes: A guide to Clostridium difficile for patients and families by Dr. J. Thomas Lamont, M.D. To learn more about C. diff, download or purchase a copy.