Abstract
Purpose
Surgical exploration and bowel resection are frequently required for treating non-occlusive mesenteric ischemia. Intraoperative evaluation of intestinal perfusion is subjective and challenging. In this feasibility study, ICG fluorescence angiography was performed in order to evaluate intestinal perfusion in patients with acute mesenteric ischemia.
Methods
This is a retrospective analysis of 52 patients who were operated for acute mesenteric ischemia using ICG fluorescence angiography. Patients with occlusive disease requiring recanalization were excluded. The SPY and PinPoint imaging systems were used for open and laparoscopic surgery, respectively. Intraoperative macroscopic assessment of perfusion was compared with the ICG angiography results.
Results
Surgical exploration was performed for ischemia of the colon (n = 12), the small bowel (n = 23), or both (n = 16). One patient had ischemia of the esophagus and stomach. All patients had a preoperative CT angiography to rule out stenosis or occlusion of the mesenteric vessels. In 18 cases (34.6%), ICG fluorescence angiography provided information that was supplemental to macroscopic evaluation, but most patients did not survive the postoperative course. However, in six of those cases (11.5%), ICG angiography led to a major change in operative strategy resulting in a significant clinical benefit for those patients. For two cases, ICG fluorescence produced false negative results.
Discussion
ICG tissue angiography is feasible and technically reliable for evaluating intestinal perfusion in acute mesenteric ischemia and led to a significant clinical benefit in 11% of our patients. A relevant discrepancy between surgical visual assessment and fluorescence angiography was found in 35% of the cases, which may help to define resection margins more accurately and thus support surgical decision-making.
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We would like to thank our colleague, Ms. Joy Fest, for language editing.
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Contributions
Ioannis Karampinis was responsible for the acquisition of data, analysis, interpretation, and drafting of the manuscript.
Michael Keese was involved in the study conception and design and revised the manuscript.
Jens Jakob was involved in the study conception and design and revised the manuscript.
Vytautas Stasiunaitis participated in the acquisition of the data and the data analysis.
Andreas Gerken was involved in the acquisition of the data and the data analysis.
Ulrike Attenberger was involved in the acquisition of the data and the data analysis.
Stefan Post critically revised the manuscript.
Peter Kienle was involved in data analysis and revision of the manuscript.
Kai Nowak planed the study, performed the acquisition of data, drafted and revised the manuscript.
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Ethical Approval
The study was approved by the ethic committee of the Mannheim medical faculty at the University of Heidelberg, Germany (2015-854R-MA). ICG is approved for intravenous application. Written informed consent was obtained whenever possible. Severely septic patients were operated on as emergency procedures.
Availability of Data and Materials
The datasets generated during the current study are not publicly available as the main findings are included in this article. The complete database is available from the corresponding author upon reasonable request.
Conflict of Interests
IK has no competing interests to declare.
MK has no competing interests to declare.
JJ has no competing interests to declare.
VS has no competing interests to declare.
UA has no competing interests to declare.
SP has no competing interests to declare.
PK has no competing interests to declare.
KN serves as a consultant in the field of intraoperative fluorescent technology for Stryker and Novadaq.
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Karampinis, I., Keese, M., Jakob, J. et al. Indocyanine Green Tissue Angiography Can Reduce Extended Bowel Resections in Acute Mesenteric Ischemia. J Gastrointest Surg 22, 2117–2124 (2018). https://doi.org/10.1007/s11605-018-3855-1
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DOI: https://doi.org/10.1007/s11605-018-3855-1