Overt hyperthyroidism is associated with increased dispersion of ventricular repolarization: a case-control study - Takeaways - MDSpire

Overt hyperthyroidism is associated with increased dispersion of ventricular repolarization: a case-control study

  • By

  • Maksymilian Kłosowicz

  • Magdalena Urbańczuk

  • Aleksandra Burbelka

  • Agnieszka Gala-Błądzińska

  • Krzysztof Balawender

  • July 7, 2026

  • 0 min

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  • 1

    The study evaluated electrocardiographic dispersion parameters in 55 patients with overt hyperthyroidism and 42 healthy controls.

  • 2

    All six assessed ventricular repolarization dispersion parameters were significantly higher in overt hyperthyroidism compared to controls.

  • 3

    The best discriminatory performance for identifying overt hyperthyroidism was observed for JTcFd and QTcBd with AUC values of 0.813 and 0.804, respectively.

  • 4

    In multivariable analysis, Tp-ed was independently associated with overt hyperthyroidism, while correlations with thyroid hormone levels were weak.

  • 5

    The study suggests an association between overt hyperthyroidism and increased ventricular repolarization heterogeneity, but clinical implications remain uncertain.

Original Source(s)

Overt hyperthyroidism is associated with increased dispersion of ventricular repolarization: a case-control study

  • by Maksymilian Kłosowicz, Magdalena Urbańczuk, Aleksandra Burbelka, Agnieszka Gala-Błądzińska, Krzysztof Balawender

  • July 7, 2026

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