Evidence map›Paper›PMID 19609893›Full record

ArticleClinical cardiology2009

Value of early cardiac troponin I to predict long-term adverse events after coronary artery bypass graft surgery in patients presenting with acute coronary syndromes.

Amit P Amin, Ekanka Mukhopadhyay, Sirikarn Napan, Manju Mamtani, Russell F Kelly, Hemant Kulkarni

Abstract read
In one paragraph

Article in Clinical cardiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed, 1 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

4 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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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

6 authors.

Amit P AminThe John H. Stroger Jr. Hospital of Cook County, Chicago, Illinois, USA.
Ekanka Mukhopadhyay
Sirikarn Napan
Manju Mamtani
Russell F Kelly
Hemant Kulkarni

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundHigh values of both preoperative and postoperative cardiac troponin I (cTnI) contribute to higher rates of short-term cardiac events following coronary artery bypass graft (CABG) surgery in patients with acute coronary syndrome (ACS). The prognostic value of very early cTnI in this context is unclear. HYPOTHESIS: Measurement of cTnI very early after admission to the emergency room can be used as a prognosticator for long-term outcomes after CABG.

methodsWe conducted a cohort study on 160 consecutive patients with ACS undergoing CABG at The John H. Stroger Jr. Hospital of Cook County (Chicago, IL) representing a total follow-up of 290.42 person-years. Adverse outcomes were defined as death or reinfarction. We used robust multivariate survival analyses to determine whether early cTnI measurement can independently predict the adverse outcomes in the study subjects.

resultsIn univariate and stepwise multivariate Cox proportional hazards modeling we found that unit rise in early cTnI is associated with a 3% (95% confidence interval [CI]: 2%- 5%, p < 0.001) faster progression to long-term adverse events after CABG even after adjusting for the type of ACS. Prognostically, the most informative cut off value for cTnI was 5.6 ng/mL. Above this value, CABG patients progressed 2.58 times faster to adverse outcomes (95% CI: 1.05-6.36, p = 0.039). This effect remained after adjustment for other significant confounders namely, poor compliance to medications, female sex, Medicaid insurance, and electrocardiographic ischemia.

conclusionEarly cTnI measurement after admission can predict adverse outcomes after CABG. This association extends to long-term adverse events after CABG.

Indexed as

Acute Coronary SyndromeAgedBiomarkersCoronary Artery BypassDisease ProgressionFemaleHumansMaleMiddle AgedPredictive Value of TestsProportional Hazards ModelsRecurrenceRetrospective StudiesRisk AssessmentRisk FactorsTime FactorsBiomarkersTroponin I

Identifiers

PMID19609893
PMCPMC6653328

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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.