Evaluation of Microcirculation in Colon Wall & Bowel Anastomosis by Laser

Status Completed

Clinical Trial Summary

The aim of the study is to describe utility of dynamic fluorescence videoangiography of indocyanine green (ICG) in gastrointestinal surgery, for evaluation of microcirculation in colon wall and anastomosis before and after surgical resection; and if this technique can guide the surgeon to peroperative decision making considering recreate a new anastomosis or stoma for preventing anastomotic failure or stomia necrosis.

Clinical Trial Description

In our study the investigators prospectively include patients with colon cancer requiring elective surgical operation. All types of colon resection were carried out according to standard procedures. Guidelines for preoperative examination according to NGICG (Norwegian Gastro-Intestinal Cancer Group) to grade the disease, select the most suitable patients and plan further treatment. Microcirculation of colon wall was assessed by dynamic laser-induced-fluorescence-videoangiography (IC-VIEW, PULSION Medical Systems AG, Munich, Germany) of indocyanine green (ICG). ICG is a water-soluble tricarbocyanine dye that binds strongly to plasma proteins after intravenous injection and is exclusively distributed in intravascular space. Additionally this system houses a laser (energy Pi = 0.16 W, wavelength = 780 nm) that causes excitation/illumination of the fluorescence light from intravascular plasma bound ICG. This light has a spectral range near-infrared energy (NIR) with a maximum at 805 nm and emits fluorescence at 835 nm. It passes through infrared filter on a digital video camera and results in recording of real time fluorescent image from perfusion of plasma bound ICG within small plexus of blood vessels in the bowel wall. Besides that it also demonstrates perfusion from surrounding structures such as appendix epiploic and pericolic fat. The maximum penetration of the laser into tissue is 3-5 mm and general normal thickness of colon wall is 3-5 mm. This method makes it a presentable tracer for tissue perfusion of anterior bowel wall. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT01419860
Study type	Interventional
Source	Ostfold Hospital Trust
Contact
Status	Completed
Phase	N/A
Start date	January 2010
Completion date	December 2016

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Evaluation of Microcirculation in Colon Wall and Bowel Anastomosis by Laser Induced Fluorescence Video Angiography

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms