Evidence map›Paper›PMID 25861295›Full record

ArticleArchives of medical science : AMS2015

Evaluation of T-wave alternans in high-resolution ECG maps recorded during the stress test in patients after myocardial infarction.

Dariusz Janusek, Michał Kania, Rajmund Zaczek, Małgorzata Kobylecka, Marek Chojnowski, Leszek Królicki, Grzegorz Opolski, Roman Maniewski

Open access · goldAbstract read
In one paragraph

Article in Archives of medical science : AMS, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.4field-weighted citation impact, top 30% 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

6 citing papers in PubMed, 7 citations in OpenAlex.

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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

8 authors at 3 institutions in 1 country.

Dariusz JanusekNalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, Warsaw, Poland.
Michał KaniaNalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, Warsaw, Poland.
Rajmund ZaczekDepartment of Cardiology, Medical University of Warsaw, Warsaw, Poland.
Małgorzata KobyleckaDepartment of Nuclear Medicine, Medical University of Warsaw, Warsaw, Poland.
Marek ChojnowskiDepartment of Nuclear Medicine, Medical University of Warsaw, Warsaw, Poland.
Leszek KrólickiDepartment of Nuclear Medicine, Medical University of Warsaw, Warsaw, Poland.
Grzegorz OpolskiDepartment of Cardiology, Medical University of Warsaw, Warsaw, Poland.
Roman ManiewskiNalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, Warsaw, Poland.
Medical University of Warsaw · PLPolish Academy of Sciences · PLInstitute of Biocybernetics and Biomedical Engineering · PL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionRecent studies point to analysis of T-wave alternans as a promising indicator of an increased risk of life-threatening ventricular arrhythmias. In this study the occurrence of T-wave alternans in the high-resolution ECGs recorded during the exercise stress test and scintigraphic tests (SPECT) in patients with ischemic heart disease was examined. MATERIAL AND

methodsThe study group consisted of 33 patients after myocardial infarction. In the group of patients after myocardial infarction and with low left ventricular ejection fraction correlations of 70% between the test results of T-wave alternans and SPECT and 60% between the test results of T-wave alternans and stress test were found.

resultsIn the group of patients after myocardial infarction but with high left ventricular ejection fraction correlations were respectively 39% and 48%. The analysis of the electrocardiographic maps showed a strong dependence of this correlation on the T-wave alternans amplitude and location of the ECG measuring electrode on the chest. The results might suggest that in patients after myocardial infarction and at increased risk for sudden cardiac death T-wave alternans may also provide information about cardiac electrical instability associated with ischemia.

conclusionsIt can also be assumed that the position of the electrode where the highest level of the T-wave alternans was detected can indicate the location of the ischemic region of the heart.

Indexed as

arrhythmiasingle-photon emission computed tomographystress testsudden cardiac deathT-wave alternans

Identifiers

PMID25861295
PMCPMC4379364
OpenAlexW2333109671

What OpenQuestion holds

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Registered trials

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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.