Open GI Surgery
Conditions
Brief summary
This is a prospective, observational study of patients undergoing open GI surgery. At the time of operation, samples will be collected from the incision site and GI tract. The study will follow patients up to 30 days postoperatively, monitoring for signs of SSI. Samples will be taken from all patients who develop SSI. Sequencing will be performed on a subset of samples based on our specific aims. * Aim 1: conduct a case-control study of patients with SSI and age-, sex-, diagnosis-, and wound class-matched control patients without SSI, comparing microbiome alpha diversity and community composition with 16S RNA sequencing to determine the association with SSI. * Aim 2: identify the strain of bacteria isolated from SSIs using shotgun metagenomic sequencing and determine whether the specific strain was present in the skin and gut at the time of operation.
Interventions
OTHERNo intervention
samples from the incision site and GI tract collected
Sponsors
University of Minnesota
Study design
Observational model
CASE_CONTROL
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* We will include adult patients (age ≥ 18 years) * Undergoing open abdominal surgery during the study period. * Open abdominal surgery will include any abdominal procedure entering the peritoneal cavity through a midline incision with a skin incision that is 5cm or greater.
Exclusion criteria
* Patients with planned minimally invasive surgery including laparoscopic or robotic surgery as these patients have lower rates of surgical site infections (SSIs). Patients who have a laparoscopic or robotic surgery converted to open surgery will be excluded. * Appendectomy and cholecystectomy as these patients have lower risk of SSI. * Vascular, gynecological, obstetric, urological or transplantation. * Trauma patients. * Patients without source control at the index operation including those with an open abdomen, no fascial closure, or temporary abdominal closure device (such as abthera dressing). * Pediatric patients (age\<18 years). * Patients who decline swab/specimen collection.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| alpha diversity composition | Baseline, Day 30 post-op | Alpha diversity composition at the surgical incision site at multiple time points |
| microbial community composition | Baseline, Day 30 post-op | microbial community composition at the surgical incision site at multiple time points |
| pathogenic strain of bacteria | Baseline, Day 30 post-op | Pathogenic strain of bacteria at SSI compared with pathogens isolated from skin and/or GI tract microbiome |
Countries
United States
Contacts
PRINCIPAL_INVESTIGATORJennifer Rickard
University of Minnesota
Outcome results
None listed