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August 24, 2025

Electrocardiographic prediction parameters for life-threatening arrhythmic events in congenital long QT syndrome patients.

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Authors

JYJing YangBeijing Institute of TechnologyJLJingyi LuoSun Yat-sen UniversityKLKun LiDongguan People’s Hospital

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Overview

Cohort study identifies heart rate, QTc interval, and T-wave parameters as predictors of arrhythmic events in congenital LQTS patients, indicating potential for early risk assessment.

Key Points

  • Heart rate less than 60 beats/min is associated with a higher risk of life-threatening arrhythmic events in patients with long QT syndrome, showing critical relevance.
  • QTc interval greater than or equal to 500 ms serves as a significant predictor, indicating elevated risk for serious cardiac complications.
  • T-wave alternans value above 55.5 μV is identified as an independent predictor for arrhythmic events, highlighting its importance in ECG evaluations.
  • Multivariate analysis emphasizes the role of documented torsades de pointes or ventricular fibrillation as key indicators for life-threatening events in congenital long QT syndrome.

Cite This Study

Yang et al. (2025) studied this question.

synapsesocial.com/papers/68af55d8ad7bf08b1eadc97bhttps://doi.org/10.3760/cma.j.cn112148-20250620-00450
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Improved Clinical Risk Stratification in Patients with Long QT Syndrome? Novel Insights from Multi-Channel ECGs2016 · 6 citations
  2. 2Investigation on Prediction of Life-Threatening Arrhythmia in Long QT Syndrome : A Systematic Review and Meta-Analysis2025
  3. 3Congenital long QT syndrome - can a 12-lead Holter ECG improve diagnosis?2026
  4. 4Assessment of absolute risk of life-threatening cardiac events in long QT syndrome patients2022 · 8 citations
  5. 5Novel risk predictor of arrhythmias for patients with potassium channel–related congenital long QT syndrome2024 · 2 citations