ArticleEuropace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology2023
Manual vs. automatic assessment of the QT-interval and corrected QT.
Article in Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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.
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.
Who cites it
16 citing papers in PubMed, 24 citations in OpenAlex.
- Annual assessment of ECG intervals in patients with myotonic dystrophy type 1 using a mobile 6‑lead ECG device: TeleCheck-DM1.International journal of cardiology. Heart & vasculature · 2026Article
- Incidence and Predictors of QTC Prolongation Among Drug-Resistant Tuberculosis Patients Receiving Bedaquiline-Based TB Regimens in Uganda: A Countrywide Retrospective Cohort Study.Open forum infectious diseases · 2026Article
- Methadone administration and QT interval prolongation: protocol for a systematic review and meta-analysis.BMJ open · 2026Article
- Mean and Cut-Off Values of the Corrected QT Interval From Childhood to Adolescence.Circulation reports · 2026Article
- Risk for QTc prolongation in patients of various medical specialties - a retrospective study on risk factors and usability of the Tisdale Score.Clinical research in cardiology : official journal of the German Cardiac Society · 2026Article
- From Empirical to More Precise Correction: Multidimensional Performance Evaluation of QTc Formulas in a Cohort of Healthy Asian Youth.Journal of the American Heart Association · 2026Article
- QTc measurement using Apple Watch electrocardiogram in congenital long QT syndrome.European heart journal. Digital health · 2026Article
- Precise peak width estimation for solving key challenges in biosignal and spectral analysis.Scientific reports · 2026Article
- Tisdale-score-based risk stratification of QTc prolongations in hospitalized patients receiving azole antifungal therapy-a retrospective study.Frontiers in cardiovascular medicine · 2026Article
- Central adiposity and sex are associated with the integrative architecture of physiological networks in healthy youth: a cross-sectional study in a cohort of Chinese college students.Frontiers in physiology · 2026Article
- QTcNet: a deep learning model for direct heart rate corrected QT interval estimation.Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology · 2025Article
- A smartphone application for semi-automated QT interval analysis based on a snapshot of an electrocardiogram trace displayed on a patient monitor.Journal of clinical monitoring and computing · 2025Article
- Determining ECG Parameters for Electrical Risk Score in Patients with Non-ST Elevation Myocardial Infarction.Anatolian journal of cardiology · 2025Article
- Article
- Prioritize Variant Reclassification in Pediatric Long QT Syndrome-Time to Revisit.Pediatric cardiology · 2024Article
- Effects of cohort, genotype, variant, and maternal β-blocker treatment on foetal heart rate predictors of inherited long QT syndrome.Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology · 2023Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
13 authors at 6 institutions in 2 countries.
Funding
Abstract
aimsSudden cardiac death (SCD) is challenging to predict. Electrocardiogram (ECG)-derived heart rate-corrected QT-interval (QTc) is used for SCD-risk assessment. QTc is preferably determined manually, but vendor-provided automatic results from ECG recorders are convenient. Agreement between manual and automatic assessments is unclear for populations with aberrant QTc. We aimed to systematically assess pairwise agreement of automatic and manual QT-intervals and QTc. METHODS AND
resultsA multi-centre cohort enriching aberrant QTc comprised ECGs of healthy controls and long-QT syndrome (LQTS) patients. Manual QT-intervals and QTc were determined by the tangent and threshold methods and compared to automatically generated, vendor-provided values. We assessed agreement globally by intra-class correlation coefficients and pairwise by Bland-Altman analyses and 95% limits of agreement (LoA). Further, manual results were compared to a novel automatic QT-interval algorithm. ECGs of 1263 participants (720 LQTS patients; 543 controls) were available [median age 34 (inter-quartile range 35) years, 55% women]. Comparing cohort means, automatic and manual QT-intervals and QTc were similar. However, pairwise Bland-Altman-based agreement was highly discrepant. For QT-interval, LoAs spanned 95 (tangent) and 92 ms (threshold), respectively. For QTc, the spread was 108 and 105 ms, respectively. LQTS patients exhibited more pronounced differences. For automatic QTc results from 440-540 ms (tangent) and 430-530 ms (threshold), misassessment risk was highest. Novel automatic QT-interval algorithms may narrow this range.
conclusionPairwise vendor-provided automatic and manual QT-interval and QTc results can be highly discrepant. Novel automatic algorithms may improve agreement. Within the above ranges, automatic QT-interval and QTc results require manual confirmation, particularly if T-wave morphology is challenging.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.