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


  • Study type

  • Study IDs

  • Describes the nature of a clinical study. Types include:

    • Observational study — observes people and measures outcomes without affecting results.
    • Interventional study (clinical trial) — studies new tests, treatments, drugs, surgical procedures or devices.
    • Medical records research — uses historical information collected from medical records of large groups of people to study how diseases progress and which treatments and surgeries work best.
  • Site IRB
    • Rochester, Minnesota: 16-006382
    Sponsor Protocol Number: 16-006382

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. If you need assistance understanding the eligibility criteria, please contact the study team.

See eligibility criteria

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 us for help.

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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