Endoscopic COlorectal Mucosal Evaluation of Oxygen Tension

Conditions

• Anastomotic Leak Large Intestine
• Anastomotic Leak Rectum

Eligibility Criteria

Sex

ALL

Age

18 Years - N/A

Healthy Volunteers

Not accepted

Interventions

• A novel endoscopic imaging system that displays real-time oxygen saturation levels — DEVICE
  The imaging system in this study maps mucosal oxygen tension, where tissue first shows signs of hypoxia, rather than serosal oxygen tension, which has been the focus of previous studies

Study Details

Anastomosis refers to the surgical connection between two segments of the bowel, typically performed during colon and rectal surgeries to restore the continuity of the digestive tract after a section has been removed. It is necessary that the ends of the tissue at the anastomotic site are healthy (and capable of healing properly) as this will prevent dreaded complications like anastomotic leaks or strictures which can occur in almost a fifth of patients leading to increased hospital length of stay, costs, and mortality. Currently, the most widely used method for assessing tissue viability during anastomosis is indocyanine green fluorescence angiography (ICG-FA). This technique involves injecting a fluorescent dye (indocyanine green) into the bloodstream, which highlights blood flow and tissue perfusion under a special camera. However, ICG-FA has limitations due to allergies and reliability due to the dye's rapid disappearance from the bloodstream. Additionally, the dye cannot be administered repeatedly. This study explores a new method of measuring tissue oxygenation by evaluating mucosal oxygen saturation (StO2) as an alternative to ICG-FA. By evaluating StO2 levels, the research aims to provide a more reliable and repeatable way to assess tissue viability without the drawbacks of using fluorescent dyes. Secondly, any blood supply interruption to the bowel will first lead to mucosal ischemia, which can potentially be reliably captured by measuring mucosal StO2 levels only. In this single-center prospective single-arm study, we will evaluate whether mucosal StO2 levels are associated with or can predict anastomotic complications. This study will not involve any intervention that would affect the standard of care.

Key Dates

Start date

Mar 16, 2026

Status verified

Jun 2026

Primary completion

Apr 30, 2027

Completion

Apr 30, 2028

Study Design

Enrollment

80 participants (estimated)

Primary Outcome Measure

Anastomotic complications [ Time Frame: 30 days ]

Central Contacts

• Aimal Khan
  +1 (615)343-4612
  [email protected]

Locations (1)

Find similar trials in Nashville, TN