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Imaging Microcirculation and Gross Hemodynamics in Elective Colorectal Surgery

NCT02688946 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 70

Last updated 2018-03-06

No results posted yet for this study

Summary

Rationale: The interaction between macro and microcirculation remains uncertain. Microvascular alterations can occur when systemic hemodynamic parameters are within an acceptable range. Perfusion changes and microvascular alterations may play an important role in anastomotic healing and the onset of anastomotic leakage after gastrointestinal surgery. Nowadays, assessment of bowel perfusion is macroscopically performed by the surgeon prior to anastomosis creation. However, local oxygen delivery may still be compromised as little is known about microcirculatory alterations of the bowel during colorectal surgery. Dark Field (DF) imaging is a technique using a stroboscopic light-emitting diode ring-based imaging modality incorporated in a hand-held device, which illuminates an area of interest and provides high contrast dynamic images of the microvasculature. DF-imaging enables to visualize the bowel's microcirculation.

Objective: To describe the human gastrointestinal microcirculation during gastrointestinal surgery under general anesthesia and to observe whether there is a correlation between bowel microcirculation and systemic hemodynamic parameters.

Study design: A prospective, single center, observational, clinical, pilot study.

Study population: 70 patients undergoing elective, gastrointestinal surgery during which the gastrointestinal tract is accessible for DF-imaging.

Main study parameters/endpoints: To describe human gastrointestinal microcirculation on both the serosal and mucosal side of the bowel during gastrointestinal surgery under general anesthesia. Main parameter: Microvascular perfusion is quantified using the Microvascular Flow Index (MFI).

Nature and extent of the burden and risks associated with participation, benefit and group relatedness: The extend of burden and risk associated with participation is negligible. Using DF imaging on the bowel is a non-invasive technique requiring a minimal amount of time as is described in the study procedure. Previous studies did not show any safety concerns. Measuring will be performed under sterile conditions and the occurrence of tissue damage is highly unlikely. Patients are under general anesthesia and will thus not experience any inconvenience.

Conditions

  • Microcirculation

Interventions

OTHER

Not provided

Sponsors & Collaborators

  • St. Antonius Hospital

    lead OTHER

Principal Investigators

  • Mat Van Iterson, PhD · St. Antonius Hospital

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2014-05-31
Primary Completion
2016-12-01
Completion
2016-12-01

Countries

  • Netherlands

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02688946 on ClinicalTrials.gov