Evidence map›Paper›PMID 21219624›Full record

SynthesisJournal of cardiothoracic surgery2011

The effect of tight glycaemic control, during and after cardiac surgery, on patient mortality and morbidity: A systematic review and meta-analysis.

Kristin K Haga, Katie L McClymont, Scott Clarke, Rebecca S Grounds, Ka Ying B Ng, Daniel W Glyde, Robert J Loveless, Gordon H Carter, R Peter Alston

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Journal of cardiothoracic surgery, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 3 pooled it
–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

33 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
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  7. Glycated Haemoglobin (HbAJournal of clinical medicine · 2024
    Review
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  20. [Position statement: surgery and diabetes mellitus].Wiener klinische Wochenschrift · 2016
    Review
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

9 authors.

Kristin K HagaSchool of Medicine and Veterinary Medicine, University of Edinburgh, Chancellors Building, 47 Little France Crescent, Edinburgh, EH16 4TJ, UK. K.Haga@sms.ed.ac.uk
Katie L McClymont
Scott Clarke
Rebecca S Grounds
Ka Ying B Ng
Daniel W Glyde
Robert J Loveless
Gordon H Carter
R Peter Alston

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundHyperglycaemia is a common occurrence during cardiac surgery, however, there remains some uncertainty surrounding the role of tight glycaemic control (blood glucose <180 mg/dL) during and/or after surgery. The aim of this study was to systematically review the literature to determine the effects of tight versus normal glycaemic control, during and after cardiac surgery, on measures of morbidity and mortality.

methodThe literature was systematically reviewed, based on pre-determined search criteria, for clinical trials evaluating the effect of tight versus normal glycaemic control during and/or after cardiac surgery. Each paper was reviewed by two, independent reviewers and data extracted for statistical analysis. Data from identified studies was combined using meta-analysis (RevMan5®). The results are presented either as odds ratios (OR) or mean differences (MD) with 95% confidence intervals (CIs).

resultsA total of seven randomised controlled trials (RCTs) were identified in the literature, although not all trials could be used in each analysis. Tight glycaemic control reduced the incidence of early mortality (death in ICU) (OR 0.52 [95% CI 0.30, 0.91]); of post-surgical atrial fibrillation (odds ratio (OR 0.76 [95%CI 0.58, 0.99]); the use of epicardial pacing (OR 0.28 [95%CI 0.15, 0.54]); the duration of mechanical ventilation (mean difference (MD) -3.69 [95% CI -3.85, -3.54]) and length of stay in the intensive care unit (ICU) (MD -0.57 [95%CI -0.60, -0.55]) days. Measures of the time spent on mechanical ventilation (I2 94%) and time spent in ICU (I2 99%) both had high degrees of heterogeneity in the data.

conclusionThe results from this study suggest that there may be some benefit to tight glycaemic control during and after cardiac surgery. However, due to the limited number of studies available and the significant variability in glucose levels; period of control; and the reporting of outcome measures, further research needs to be done to provide a definitive answer on the benefits of tight glycaemic control for cardiac surgery patients.

Indexed as

Cardiac Surgical ProceduresHyperglycemiaBlood GlucoseGlobal HealthHumansMonitoring, IntraoperativeMorbidityPostoperative CarePrognosisSurvival RateBlood Glucose

Identifiers

PMID21219624
PMCPMC3023693

What OpenQuestion holds

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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.