QT dispersion in the elderly. The ILSA study

Giovanni Bortolan, Marta Bressan, Fiorenza Golferini, Luigi Amaducci, Guglielmo Scarlato, Marzia Baldereschi, Livia Candelise, Antonio Di Carlo, Francesco Grigoletto, Stefania Maggi, Nadia Minicuci, Elio Scarpini, Giuseppina Volonnino, Carlo Loeb, Carlo Gandolfo, Nicola Canal, Massimo Franceschi, Leontino Battistin, Giuliano Enzi, Augusto GhettiDomenico Inzitari, Rossano Vergassola, Salvatore Bonaiuto, Franco Rengo, Antonio Capurso, Paolo Livrea, Luciano Motta

Research output: Contribution to journalArticlepeer-review


Background and aims: In the last few years there has been active interest in the study of QT interval dispersion (QT-d) calculated from the 12-lead ECG, as a non-invasive method of investigating the homogeneity of ventricular recovery time. The aim of this study was to evaluate QT interval dispersion, analyzing in particular gender and age relationships. Discussion of its electrophysiologic and clinic meaning is still open; moreover, the method must be standardized and normal values should be clearly defined. Methods: The two common indices, range and standard deviation of QT, were taken into account. The study sample is part of the population-based Italian Longitudinal Study on Aging (ILSA) with individuals older than 64 years. Three groups were identified by clinical data: 256 healthy subjects, 98 patients with only cardiac diseases, and 472 patients with only hypertension. Results: Age (75) and gender subgroups were considered, showing that age and gender influence the QT-d differently in the three groups. QT-d indices were influenced in the healthy group by gender (p

Original languageEnglish
Pages (from-to)342-348
Number of pages7
JournalAging clinical and experimental research
Issue number5
Publication statusPublished - Oct 2004


  • Age
  • Elderly
  • Electrocardiography
  • Gender
  • QT dispersion

ASJC Scopus subject areas

  • Ageing


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