Evidence map›Paper›PMID 36003589›Full record

ArticleJTCVS open2021

Warm versus cold cardioplegia in cardiac surgery: A meta-analysis with trial sequential analysis.

Thompson Ka Ming Kot, Jeffrey Shi Kai Chan, Saied Froghi, Dawnie Ho Hei Lau, Kara Morgan, Francesco Magni, Amer Harky

Abstract read
In one paragraph

Article in JTCVS open, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

1 citing paper in PubMed.

  1. Article
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

7 authors.

Thompson Ka Ming KotFaculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong.
Jeffrey Shi Kai ChanFaculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong.
Saied FroghiDivision of Surgery and Interventional Sciences, Royal Free Hospital, University College London, London, United Kingdom.
Dawnie Ho Hei LauFaculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong.
Kara MorganDepartment of Cardiology, Manchester Royal Infirmary, Manchester, United Kingdom.
Francesco MagniFaculty of Medicine, University College London, London, United Kingdom.
Amer HarkyDepartment of Cardiothoracic Surgery, Liverpool Heart and Chest Hospital, Liverpool, United Kingdom.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Objective: This meta-analysis aimed to compare clinical outcomes of warm and cold cardioplegia in cardiac surgeries in adult patients, with trial sequential analysis (TSA) used to determine the conclusiveness of the results. Methods: Electronic searches were performed on PubMed, Medline, Scopus, EMBASE, and Cochrane library to identify all studies that compared warm and cold cardioplegia in cardiac surgeries. Primary end points were in-hospital or 30-day mortality, myocardial infarction, low cardiac output syndrome, intra-aortic balloon pump use, stroke, and new atrial fibrillation. Secondary end points were acute kidney injury, hospital length of stay, and intensive care unit length of stay. Prespecified subgroup analyses were performed for (1) studies published since publication of Fan and colleagues in 2010, (2) randomized controlled studies, (3) studies with low risk of bias, (4) coronary artery bypass graft surgeries, and (5) studies with cold blood versus those with cold crystalloid cardioplegia. TSA was performed to determine conclusiveness of the results, using on all outcomes without significant heterogeneity from studies of low risk of bias. Results: No significant differences were found between post-operative rates of mortality, myocardial infarction, low cardiac output syndrome, intra-aortic balloon pump use, stroke, new atrial fibrillation, and acute kidney injury between warm and cold cardioplegia. TSA concluded that current evidence was sufficient to rule out a 20% relative risk reduction in these outcomes. Conclusions: Concerning safety outcomes, current evidence suggests that the choice between warm and cold cardioplegia remains in the surgeon's preference.

Indexed as

AF, atrial fibrillationAKI, acute kidney injuryCABG, coronary artery bypass graftcardiac surgeriesCI, confidence intervalcold cardioplegiaIABP, intra-aortic balloon pumpICU, intensive care unitLCOS, low cardiac output syndromeLOS, length of staymeta-analysisMI, myocardial infarctionNOS, Newcastle–Ottawa Quality Assessment ScalePRISMA, Preferred Reporting Items for Systematic Reviews and Meta-AnalysesRCT, randomized controlled trialRR, risk ratiotrial sequential analysisTSA, trial sequential analysiswarm cardioplegiaWMD, weighted mean difference

Identifiers

PMID36003589
PMCPMC9390447

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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.