Evidence map›Paper›PMID 37253021›Full record

SynthesisThe British journal of surgery2023

Intraoperative bowel perfusion assessment methods and their effects on anastomotic leak rates: meta-analysis.

Maxwell S Renna, Mariusz T Grzeda, James Bailey, Alison Hainsworth, Sebastien Ourselin, Michael Ebner, Tom Vercauteren, Alexis Schizas, Jonathan Shapey

Open access · hybridAbstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in The British journal of surgery, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 3 pooled it
9.4field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

29 citing papers in PubMed, 3 syntheses or guidelines pooled it, 41 citations in OpenAlex.

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  15. Intraoperative assessment of anastomotic microcirculation during right hemicolectomy with real-time laser speckle contrast imaging is safe and feasible.Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland · 2025
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 3 institutions in 1 country.

Maxwell S RennaSchool of Biomedical Engineering and Imaging Sciences, King's College London, London, UK.ORCID 0000-0002-0136-4311
Mariusz T GrzedaSchool of Biomedical Engineering and Imaging Sciences, King's College London, London, UK.
James BaileyDepartment of General Surgery, University of Nottingham, Nottingham, UK.ORCID 0000-0002-2437-3050
Alison HainsworthDepartment of General Surgery, Guy's and St Thomas' NHS Foundation Trust, London, UK.
Sebastien OurselinSchool of Biomedical Engineering and Imaging Sciences, King's College London, London, UK.
Michael EbnerHypervision Surgical Ltd, London, UK.ORCID 0000-0002-0170-7062
Tom VercauterenSchool of Biomedical Engineering and Imaging Sciences, King's College London, London, UK.ORCID 0000-0003-1794-0456
Alexis SchizasDepartment of General Surgery, Guy's and St Thomas' NHS Foundation Trust, London, UK.
Jonathan ShapeySchool of Biomedical Engineering and Imaging Sciences, King's College London, London, UK.
King's College London · GBGuy's and St Thomas' NHS Foundation Trust · GBUniversity of Nottingham · GB

Funding

Wellcome Trust
6 · The paper itself

Abstract

backgroundAnastomotic leak is one of the most feared complications of colorectal surgery, and probably linked to poor blood supply to the anastomotic site. Several technologies have been described for intraoperative assessment of bowel perfusion. This systematic review and meta-analysis aimed to evaluate the most frequently used bowel perfusion assessment modalities in elective colorectal procedures, and to assess their associated risk of anastomotic leak. Technologies included indocyanine green fluorescence angiography, diffuse reflectance spectroscopy, laser speckle contrast imaging, and hyperspectral imaging.

methodsThe review was preregistered with PROSPERO (CRD42021297299). A comprehensive literature search was performed using Embase, MEDLINE, Cochrane Library, Scopus, and Web of Science. The final search was undertaken on 29 July 2022. Data were extracted by two reviewers and the MINORS criteria were applied to assess the risk of bias.

resultsSome 66 eligible studies involving 11 560 participants were included. Indocyanine green fluorescence angiography was most used with 10 789 participants, followed by diffuse reflectance spectroscopy with 321, hyperspectral imaging with 265, and laser speckle contrast imaging with 185. In the meta-analysis, the total pooled effect of an intervention on anastomotic leak was 0.05 (95 per cent c.i. 0.04 to 0.07) in comparison with 0.10 (0.08 to 0.12) without. Use of indocyanine green fluorescence angiography, hyperspectral imaging, or laser speckle contrast imaging was associated with a significant reduction in anastomotic leak.

conclusionBowel perfusion assessment reduced the incidence of anastomotic leak, with intraoperative indocyanine green fluorescence angiography, hyperspectral imaging, and laser speckle contrast imaging all demonstrating comparable results.

Indexed as

Anastomotic LeakDigestive System Surgical ProceduresAnastomosis, SurgicalHumansIndocyanine GreenPerfusionIndocyanine Green

Identifiers

PMID37253021
PMCPMC10416696
OpenAlexW4378783276

What Socratic holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.