Defining indocyanine green fluorescence to assess anastomotic perfusion during gastrointestinal surgery: systematic review.
Journal
BJS open
ISSN: 2474-9842
Titre abrégé: BJS Open
Pays: England
ID NLM: 101722685
Informations de publication
Date de publication:
05 03 2021
05 03 2021
Historique:
received:
10
01
2020
accepted:
09
04
2020
entrez:
24
4
2021
pubmed:
25
4
2021
medline:
23
11
2021
Statut:
ppublish
Résumé
The aim of this systematic review was to identify all methods to quantify intraoperative fluorescence angiography (FA) of the gastrointestinal anastomosis, and to find potential thresholds to predict patient outcomes, including anastomotic leakage and necrosis. This systematic review adhered to the PRISMA guidelines. A PubMed and Embase literature search was performed. Articles were included when FA with indocyanine green was performed to assess gastrointestinal perfusion in human or animals, and the fluorescence signal was analysed using quantitative parameters. A parameter was defined as quantitative when a diagnostic numeral threshold for patient outcomes could potentially be produced. Some 1317 articles were identified, of which 23 were included. Fourteen studies were done in patients and nine in animals. Eight studies applied FA during upper and 15 during lower gastrointestinal surgery. The quantitative parameters were divided into four categories: time to fluorescence (20 studies); contrast-to-background ratio (3); pixel intensity (2); and numeric classification score (2). The first category was subdivided into manually assessed time (7 studies) and software-derived fluorescence-time curves (13). Cut-off values were derived for manually assessed time (speed in gastric conduit wall) and derivatives of the fluorescence-time curves (Fmax, T1/2, TR and slope) to predict patient outcomes. Time to fluorescence seems the most promising category for quantitation of FA. Future research might focus on fluorescence-time curves, as many different parameters can be derived and the fluorescence intensity can be bypassed. However, consensus on study set-up, calibration of fluorescence imaging systems, and validation of software programs is mandatory to allow future data comparison.
Sections du résumé
BACKGROUND
The aim of this systematic review was to identify all methods to quantify intraoperative fluorescence angiography (FA) of the gastrointestinal anastomosis, and to find potential thresholds to predict patient outcomes, including anastomotic leakage and necrosis.
METHODS
This systematic review adhered to the PRISMA guidelines. A PubMed and Embase literature search was performed. Articles were included when FA with indocyanine green was performed to assess gastrointestinal perfusion in human or animals, and the fluorescence signal was analysed using quantitative parameters. A parameter was defined as quantitative when a diagnostic numeral threshold for patient outcomes could potentially be produced.
RESULTS
Some 1317 articles were identified, of which 23 were included. Fourteen studies were done in patients and nine in animals. Eight studies applied FA during upper and 15 during lower gastrointestinal surgery. The quantitative parameters were divided into four categories: time to fluorescence (20 studies); contrast-to-background ratio (3); pixel intensity (2); and numeric classification score (2). The first category was subdivided into manually assessed time (7 studies) and software-derived fluorescence-time curves (13). Cut-off values were derived for manually assessed time (speed in gastric conduit wall) and derivatives of the fluorescence-time curves (Fmax, T1/2, TR and slope) to predict patient outcomes.
CONCLUSION
Time to fluorescence seems the most promising category for quantitation of FA. Future research might focus on fluorescence-time curves, as many different parameters can be derived and the fluorescence intensity can be bypassed. However, consensus on study set-up, calibration of fluorescence imaging systems, and validation of software programs is mandatory to allow future data comparison.
Identifiants
pubmed: 33893811
pii: 6249560
doi: 10.1093/bjsopen/zraa074
pmc: PMC8271268
pii:
doi:
Substances chimiques
Coloring Agents
0
Indocyanine Green
IX6J1063HV
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Systematic Review
Langues
eng
Sous-ensembles de citation
IM
Informations de copyright
© 2020 The Authors. BJS Open published by John Wiley & Sons Ltd on behalf of British Journal of Surgery Society.
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