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Consensus Conference Statement on the general use of Near-infrared Fluorescence Imaging and Indocyanine Green Guided Surgery Results of a Modified Delphi Study

Background: In recent decades, the use of near-infrared light and fluores- cence-guidance during open and laparoscopic surgery has exponentially expanded across various clinical settings. However, tremendous variability exists in how it is performed.

Objective: In this first published survey of international experts on fluorescence-guided surgery, we sought to identify areas of consensus and non- consensus across 4 areas of practice: fundamentals; patient selection/ preparation; technical aspects; and effectiveness and safety.

Methods: A Delphi survey was conducted among 19 international experts in fluorescence-guided surgery attending a 1-day consensus meeting in Frank- furt, Germany on September 8th, 2019. Using mobile phones, experts were asked to anonymously vote over 2 rounds of voting, with 70% and 80% set as a priori thresholds for consensus and vote robustness, respectively.

Results: Experts from 5 continents reached consensus on 41 of 44 statements, including strong consensus that near-infrared fluorescence-guided surgery is both effective and safe across a broad variety of clinical settings, including the localization of critical anatomical structures like vessels, detection of tumors and sentinel nodes, assessment of tissue perfusion and anastomotic leaks, delineation of segmented organs, and localization of parathyroid glands. Although the minimum and maximum safe effective dose of ICG were felt to be 1 to 2 mg and >10 mg, respectively, there was strong consensus that determining the optimum dose, concentration, route and timing of ICG administration should be an ongoing research focus.

Conclusions: Although fluorescence imaging was almost unanimously per- ceived to be both effective and safe across a broad range of clinical settings, considerable further research remains necessary to optimize its use.
Keywords: consensus, Delphi survey, fluorescence-guided indocyanine green.

Dip, Fernando MD*,†; Boni, Luigi MD; Bouvet, Michael MD§; Carus, Thomas MD; Diana, Michele MD||; Falco, Jorge MD**; Gurtner, Geoffrey C. MD††; Ishizawa, Takeaki MD, PhD‡‡; Kokudo, Norihiro MD, PhD‡‡; Lo Menzo, Emanuele MD; Low, Philip S. PhD§§; Masia, Jaume MD¶¶; Muehrcke, Derek MD||||; Papay, Francis A. MD***; Pulitano, Carlo MD, PhD†††; Schneider-Koraith, Sylke MD‡‡‡; Sherwinter, Danny MD§§§; Spinoglio, Giuseppe MD¶¶¶; Stassen, Laurents MD, PhD||||||; Urano, Yasuteru PhD¶¶¶¶; Vahrmeijer, Alexander MD****; Vibert, Eric MD, PhD††††; Warram, Jason MD‡‡‡‡; Wexner, Steven D. MD, PhD (Hon); White, Kevin MD, PhD§§§§; Rosenthal, Raul J. MD


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