Evidence map›Paper›PMID 30630413›Full record

ArticleBMC cardiovascular disorders2019

Why complicate an important task? An orderly display of the limb leads in the 12-lead electrocardiogram and its implications for recognition of acute coronary syndrome.

T Lindow, Y Birnbaum, K Nikus, A Maan, U Ekelund, O Pahlm

Abstract read
In one paragraph

Article in BMC cardiovascular disorders, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

3 citing papers in PubMed.

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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.

T LindowDepartment of Clinical Physiology, Växjö Central Hospital, Växjö, Sweden. Thomas.a.lindow@gmail.com.ORCID 0000-0002-2943-0034
Y BirnbaumThe Section of Cardiology, Baylor College of Medicine, and the Texas Heart Institute, Baylor St Luke Medical Center, Houston, TX, USA.
K NikusHeart Center, Tampere University Hospital, Tampere, Finland.
A MaanDepartment of Cardiology, Leiden University Medical Center, Leiden, The Netherlands.
U EkelundClinical Sciences, Emergency Medicine, Skane University Hospital, Lund, Sweden.
O PahlmClinical Physiology and Nuclear Medicine, Skane University Hospital, Lund, Sweden.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn the standard ECG display, limb leads are presented in a non-anatomical sequence: I, II, III, aVR, aVL, aVF. The Cabrera system is a display format which instead presents the limb leads in a cranial/left-to-caudal/right sequence, i.e. in an anatomically sequential order. Lead aVR is replaced in the Cabrera display by its inverted version, -aVR, which is presented in its logical place between lead I and lead II. MAIN TEXT: In this debate article possible implications of using the Cabrera display, instead of the standard, non-contiguous lead display, are presented, focusing on its use in patients with possible acute coronary syndrome. The importance of appreciating reciprocal limb-lead ECG changes and the diagnostic and prognostic value of including aVR or lead -aVR in ECG interpretation in acute coronary syndrome is covered. Illustrative cases and ECGs are presented with both the standard and contiguous limb lead display for each ECG. A contiguous lead display is useful when diagnosing acute coronary syndrome in at least 3 ways: 1) when contiguous leads are present adjacent to each other, identification of ST elevation in two contiguous leads is simple; 2) a contiguous lead display facilitates understanding of lead relationships as well as reciprocal changes; 3) it makes the common neglect of lead aVR unlikely. CONLUSIONS: It is logical to display the limb leads in their sequential anatomical order and it may have advantages both in diagnostics and ECG learning.

Indexed as

Data DisplayAction PotentialsAcute Coronary SyndromeElectrocardiographyEquipment DesignHeart RateHumansPredictive Value of TestsPrognosisReproducibility of ResultsSignal Processing, Computer-Assisted

Identifiers

PMID30630413
PMCPMC6329183

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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.