A Study of Bacteria Present on the Skin and within the Gastrointestinal Tract and the Connection to Postoperative Infectious Complications


About this study

The purpose of this study is to better understand why patients get infectious complications after colon or rectal surgery by identifying the bacteria present on the skin and within the gastrointestinal tract in both healthy volunteers undergoing a colonoscopy, and in patients undergoing colon and rectal surgery. By comparing the bacteria within these two groups, we will better understand the causes of postoperative infectious complications.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. There is no guarantee that every individual who qualifies and wants to participate in a trial will be enrolled. Contact the study team to discuss study eligibility and potential participation.

Inclusion Criteria

  • Surgical patients
    • Is undergoing colon resection for diverticulitis, inflammatory bowel disease, or malignancy
    • Age ≥ 18
  • Healthy Controls
    • Undergoing a screening colonoscopy
    • Age ≥ 18

Exclusion Criteria 

  • History of colorectal cancer
  • History of antibiotic use in last 30 days

Participating Mayo Clinic locations

Study statuses change often. Please contact the study team for the most up-to-date information regarding possible participation.

Mayo Clinic Location Status

Rochester, Minn.

Mayo Clinic principal investigator

Heidi Nelson, M.D.

Closed for enrollment

More information


Publications are currently not available

Study Results Summary

Not yet available

Supplemental Study Information

Not yet available

Additional contact information

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Phone: 800-664-4542 (toll-free)

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