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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 YangJLJingyi LuoKLKun Li

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Overview

Cohort study identifies ECG parameters related to arrhythmic events in congenital long QT syndrome, suggesting potential predictive indicators.

Key Points

  • Heart rate less than 60 beats/min predicts life-threatening arrhythmic events in long QT syndrome patients, suggesting early intervention may be necessary.
  • QTc interval of 500 ms or more is identified as a significant predictor, highlighting the importance of ECG parameters for risk assessment.
  • Cox regression analysis reveals peak T-wave alternans value of 55.5 μV or greater as an independent predictor, indicating its potential diagnostic value.
  • Patients with documented torsades de pointes or ventricular fibrillation show higher risk of arrhythmic events, emphasizing the need for continuous monitoring.

Cite This Study

Yang et al. (2025) studied this question.

synapsesocial.com/papers/68af75147567bf4f94fedfdbhttps://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. 1Congenital long QT syndrome - can a 12-lead Holter ECG improve diagnosis?2026
  2. 2Paediatric long QT syndrome: clinical outcomes and therapy in the Spanish National Registry2026 · 1 citations
  3. 3Left ventricular hypertrabeculation is a novel predictor of life-threatening arrhythmic events in long QT syndrome patients2025
  4. 4Software-based analysis of T-wave morphology: identifying the electrocardiogram signature of high-risk long QT syndrome2025 · 1 citations
  5. 5Long QT syndrome in paediatric patients: a single-centre perspective2026