Evidence map›Paper›PMID 41733198›Full record

Observational studyBrazilian journal of cardiovascular surgery2026

Portable Smartphone-Based Thermal Imaging for Real-Time Assessment of Coronary Artery Bypass Grafting Graft Patency and Cardioplegia Distribution: A Feasibility Case Series.

Henrique Madureira da Rocha Coutinho, Eduardo Saito, Gustavo Kikuta, Bernardo Ferreira Americano Brasil, Pedro Ricardo Garcia Jazbik, Gabriel Bittencourt, Giovana Pedro, Nathalia Lino, Joaquim Henrique de Souza Coutinho, Rodolfo Acatauassú Nunes

Abstract readObservational Study
PubMed Full text at PMC Publisher
In one paragraph

Observational study in Brazilian journal of cardiovascular surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0cells of the map it votes in
0citing papers in PubMed
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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

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Henrique Madureira da Rocha CoutinhoUniversidade do Estado do Rio de Janeiro Hospital Universitário Pedro Ernesto Department of Cardiovascular Surgery Rio de Janeiro Rio de Janeiro Brazil Department of Cardiovascular Surgery, Hospital Universitário Pedro Ernesto, Universidade do Estado do Rio de Janeiro (HUPE-UERJ), Rio de Janeiro, Rio de Janeiro, Brazil.
Eduardo SaitoUniversidade do Estado do Rio de Janeiro Hospital Universitário Pedro Ernesto Department of Thoracic Surgery Rio de Janeiro Rio de Janeiro Brazil Department of Thoracic Surgery, Hospital Universitário Pedro Ernesto, Universidade do Estado do Rio de Janeiro (HUPE-UERJ), Rio de Janeiro, Rio de Janeiro, Brazil.
Gustavo KikutaUniversidade do Estado do Rio de Janeiro Hospital Universitário Pedro Ernesto Department of Cardiovascular Surgery Rio de Janeiro Rio de Janeiro Brazil Department of Cardiovascular Surgery, Hospital Universitário Pedro Ernesto, Universidade do Estado do Rio de Janeiro (HUPE-UERJ), Rio de Janeiro, Rio de Janeiro, Brazil.
Bernardo Ferreira Americano BrasilUniversidade do Estado do Rio de Janeiro Hospital Universitário Pedro Ernesto Department of Cardiovascular Surgery Rio de Janeiro Rio de Janeiro Brazil Department of Cardiovascular Surgery, Hospital Universitário Pedro Ernesto, Universidade do Estado do Rio de Janeiro (HUPE-UERJ), Rio de Janeiro, Rio de Janeiro, Brazil.
Pedro Ricardo Garcia JazbikUniversidade do Estado do Rio de Janeiro Hospital Universitário Pedro Ernesto Department of Cardiovascular Surgery Rio de Janeiro Rio de Janeiro Brazil Department of Cardiovascular Surgery, Hospital Universitário Pedro Ernesto, Universidade do Estado do Rio de Janeiro (HUPE-UERJ), Rio de Janeiro, Rio de Janeiro, Brazil.
Gabriel BittencourtUniversidade do Estado do Rio de Janeiro Hospital Universitário Pedro Ernesto Department of Cardiovascular Surgery Rio de Janeiro Rio de Janeiro Brazil Department of Cardiovascular Surgery, Hospital Universitário Pedro Ernesto, Universidade do Estado do Rio de Janeiro (HUPE-UERJ), Rio de Janeiro, Rio de Janeiro, Brazil.
Giovana PedroUniversidade do Estado do Rio de Janeiro Hospital Universitário Pedro Ernesto Department of Cardiovascular Surgery Rio de Janeiro Rio de Janeiro Brazil Department of Cardiovascular Surgery, Hospital Universitário Pedro Ernesto, Universidade do Estado do Rio de Janeiro (HUPE-UERJ), Rio de Janeiro, Rio de Janeiro, Brazil.
Nathalia LinoUniversidade do Estado do Rio de Janeiro Hospital Universitário Pedro Ernesto Department of Cardiovascular Surgery Rio de Janeiro Rio de Janeiro Brazil Department of Cardiovascular Surgery, Hospital Universitário Pedro Ernesto, Universidade do Estado do Rio de Janeiro (HUPE-UERJ), Rio de Janeiro, Rio de Janeiro, Brazil.
Joaquim Henrique de Souza CoutinhoUniversidade do Estado do Rio de Janeiro Hospital Universitário Pedro Ernesto Department of Cardiovascular Surgery Rio de Janeiro Rio de Janeiro Brazil Department of Cardiovascular Surgery, Hospital Universitário Pedro Ernesto, Universidade do Estado do Rio de Janeiro (HUPE-UERJ), Rio de Janeiro, Rio de Janeiro, Brazil.
Rodolfo Acatauassú NunesUniversidade do Estado do Rio de Janeiro Hospital Universitário Pedro Ernesto Department of Thoracic Surgery Rio de Janeiro Rio de Janeiro Brazil Department of Thoracic Surgery, Hospital Universitário Pedro Ernesto, Universidade do Estado do Rio de Janeiro (HUPE-UERJ), Rio de Janeiro, Rio de Janeiro, Brazil.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionIntraoperative assessment of graft patency and cardioplegia distribution during coronary artery bypass grafting (CABG) is essential for surgical success but remains challenging in resource-limited settings. Conventional tools such as flow measurement or intraoperative angiography are often unavailable in public hospitals, where evaluation relies mainly on clinical judgment.

methodsWe conducted a prospective observational case series of 10 CABG patients operated between February and July 2025 at a public university hospital. Myocardial temperature distribution during cardioplegia infusion and after grafting was monitored with a portable smartphone-based thermal camera (FLIR One Pro).

resultsThermal imaging documented cardioplegia distribution and graft patency in all cases. In one patient, heterogeneous distribution in the lateral wall was identified, leading to a change in surgical sequence and improved myocardial protection. All patients were weaned from bypass with stable rhythm, showed expected postoperative troponin kinetics, and had no new wall motion abnormalities on echocardiography.

conclusionPortable thermal imaging is a feasible, safe, and inexpensive method for real-time intraoperative evaluation of cardioplegia distribution and graft patency in CABG. It may represent a valuable adjunct in resource-limited environments. Larger studies are needed to confirm these findings.

Indexed as

Coronary Artery BypassHeart Arrest, InducedMonitoring, IntraoperativeSmartphoneThermographyVascular PatencyAgedFeasibility StudiesFemaleHumansMaleMiddle AgedProspective StudiesBlood Vessel PatencyCardioplegiaCoronary Artery BypassIntraoperative Monitoring.Thermography

Identifiers

PMID41733198
PMCPMC12931436

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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 OpenQuestion graph.