Evidence map›Paper›PMID 29938866›Full record

ArticleAnnals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc2018

Association of QRS-T angle and heart rate variability with major cardiac events and mortality in hemodialysis patients.

Dimitrios Poulikakos, Katerina Hnatkova, Debasish Banerjee, Marek Malik

Abstract read
In one paragraph

Article in Annals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing 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.

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3 · Its place in the literature

Who cites it

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

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  20. Association of QRS-T angle and heart rate variability with major cardiac events and mortality in hemodialysis patients.Annals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc · 2018
    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

4 authors.

Dimitrios PoulikakosRenal Unit, Centre for Cardiac Research, Institute of Cardiovascular Sciences, Salford Royal NHS Foundation Trust, Manchester, UK.ORCID 0000-0001-7987-2247
Katerina HnatkovaImperial College, National Heart and Lung Institute, London, UK.
Debasish BanerjeeRenal and Transplantation Unit, St. Georges University Hospital NHS Foundation Trust, Cardiology Clinical Academic Group, Molecular and Clinical Sciences Research Institute, St George's, University of London, London, UK.
Marek MalikImperial College, National Heart and Lung Institute, London, UK.ORCID 0000-0002-3792-1407

Funding

British Heart Foundation NH/16/2/32499
6 · The paper itself

Abstract

introductionMortality in hemodialysis (HD) patients is high with significant proportion attributed to fatal arrhythmias. In a pilot study, we showed that intradialytic electrocardiographic (ECG) monitoring can yield stable profiles of selected repolarisation descriptors and heart rate variability (HRV) parameters. This study investigated the relationship of these ECG markers with major adverse cardiac events (MACE) and mortality.

methodsContinuous ECGs were obtained during HD and repeated five times at 2-week intervals. The QRS-T angle calculated as Total Cosine R to T (TCRT) and T-wave morphology dispersion (TMD) were calculated in overlapping 10 s ECG segments. High- (HF) and low (LF)-frequency components and the LF/HF ratio of HRV were calculated every 5 min. These indices were averaged during the first hour of dialysis and subsequently overall recordings in each subject.

resultsAll ECG parameters were available in 72 patients aged 61 ± 15, 23 (31.9%) females and 26 (36.1%) diabetics. After a median follow up of 54.8 months, 16 patients died, 20 were transplanted, and 9 suffered MACE. TCRT (in degrees) was higher and LF/HF was lower in patients who died compared to survivors (112 ± 30 vs. 73 ± 35, p = 0.000 and 0.222 ± 0.418 vs. 0.401 ± 0.274, p = 0.000, respectively) and in MACE positive compared to negative (117 ± 40 vs. 77 ± 34, p = 0.017 and 0.125 ± 0.333 vs.0.401 ± 0.274, p = 0.007 respectively). In multivariate Cox regression analysis of mortality risk adjusted for age, diabetes mellitus, and coronary artery disease, TCRT and LF/HF remained significant predictors (p < 0.05).

conclusionQRS-T angle and HRV may serve risk assessment in future prospective studies in HD patients.

Indexed as

ComorbidityAgedAge FactorsArrhythmias, CardiacCohort StudiesDeath, Sudden, CardiacElectrocardiographyElectrocardiography, AmbulatoryFemaleHeart RateHumansKaplan-Meier EstimateMaleMiddle AgedMultivariate AnalysisPilot Projectsarrhythmiaselectrocardiogramheart rate variabilitymortalityQRS-T anglesudden cardiac death

Identifiers

PMID29938866
PMCPMC6931824

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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.