Subjective Near-infrared Fluorescence Guidance in Perfusion Assessment of Ileal Pouch Formation and Ileal-pouch-anal Anastomosis

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

50 participants

Study Classification

INTERVENTIONAL

Study Start Date

2019-02-01

Study Completion Date

2021-01-31

Brief Summary

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In this prospective, non-randomized cohort study, real-time intraoperative visualization using near-infrared-fluorescence by indocyanine green injection (ICG-NIRF) is performed at three time points during ileal pouch reconstruction. The intraoperative imaging findings are then analysed and correlated with the 30 day postoperative clinical outcome including occurrence of anastomotic leak of the pouch.

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Detailed Description

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Near-infrared-fluorescence by indocyanine green (ICG-NIRF) utilises the fluorescent property of intravenously injected indocyanine green (ICG) as an intravascular indicator of tissue and bowel perfusion.

The investigators hypothesise that ICG-NIRF is a suitable, reliable and precise method of visualisation of the blood supply and bowel perfusion in the area of ileal pouch formation and the ileal pouch-anal anastomosis.

In this prospective, non-randomized cohort study, restorative proctocolectomy with ileal pouch reconstruction and ileal pouch-anal anastomosis is performed according to standard of care for medically-refractory ulcerative colitis (UC), UC-associated neoplasia, medically-refractory Crohn´s colitis, colorectal carcinoma or familial adenomatous polyposis (FAP) in open or laparoscopic surgery, according to the surgeon's choice.

Written informed consent for participation and ICG-administration is obtained one day before surgery.

Intraoperatively, Indocyanine Green (VerDye, Diagnostic Green GmbH, Aschheim Germany, 25 mg vials) is dissolved in 5 mL sterile water to yield a 5 mg/mL concentration. It will then be administered intravenously at three consecutive time points as a bolus of 2 ml per time point at the most. The overall dose of ICG will amount to no more than 30mg of ICG per patient.

Real-time intraoperative visualization is performed with the SpectrumTM Fluorescence Imaging Platform (Quest Innovations, Middenmeer, The Netherlands) directly after each ICG injection assessing bowel perfusion at three different time points respectively: before and after J-Pouch construction by stapler anastomosis and after ileoanal anastomosis formation.

Clinical data and follow-up Clinical data is be collected from all patients regarding anastomotic leak, bowel ischemia and necrosis as well as 30 day postoperative morbidity, mortality and length and cost of hospital stay.

Subjective data analysis will performed using Microsoft Excel® and IBM SPSS®.

Conditions

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Ulcerative Colitis Colorectal Cancer Crohn Disease Familial Adenomatous Polyposis Crohn Colitis Ileal Pouch

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

This is a non randomised prospective cohort study design.

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

NONE

Study Groups

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ICG-NIRF Imaging

ICG-NIRF imaging is used intraoperatively to visualise precisely the blood supply and bowel perfusion rate in the area of ileal pouch formation and the ileal pouch-anal anastomosis.

Group Type OTHER

ICG-NIRF Imaging

Intervention Type DIAGNOSTIC_TEST

intraoperative NIRF Imaging using the fluorescence agent ICG (indocyanine-green) at regions of interest before (T1) + after pouch construction (T2) + after ileoanal anastomosis (T3)

Interventions

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ICG-NIRF Imaging

intraoperative NIRF Imaging using the fluorescence agent ICG (indocyanine-green) at regions of interest before (T1) + after pouch construction (T2) + after ileoanal anastomosis (T3)

Intervention Type DIAGNOSTIC_TEST

Eligibility Criteria

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Inclusion Criteria

* age ≥ 18
* capability of signing the informed consent
* diagnosis of therapy resistent ulcerative colitis, colorectal cancer, Crohn's disease, familial adenomatous polyposis
* restaurative proctocolectomy (RPC) with reconstruction through ileal pouch formation and ileal pouch-anal anastomosis (IPAA) is possible and medically indicated
* ASA score ≤ 3