QT interval disturbances in elderly residents of long-term care facilities

Emily Lubart*, Refael Segal, Stella Megid, Alexandra Yarovoy, Arthur Leibovitz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Background: The QT interval reflects the total duration of ventricular myocardial repolarization. Disturbed QT - either prolonged or shortened - is associated with arrhythmia and is life-threatening. Objectives: To investigate an elderly population for disturbed QT interval. Methods: We conducted a cross-sectional study on residents of long-term care wards in a geriatric hospital. Excluded were those with pacemaker, atrial fibrillation or bundle branch block. The standard 12 lead and lead 2 electrocardiograms in the patients' files were used for the evaluation of QT interval. Results: We screened the ECGs of 178 residents. QTc prolongation based on the mean 12 ECG leads was detected in 48 (28%), while 45 (25%) had prolonged QTc based on lead L2. Factors associated with QT prolongation were male gender, chronic renal failure and diabetes mellitus. Short QT was found in 7 residents (4%) and was not related to any parameter. Conclusions: About one-third of the elderly long-term care residents in our study had QT disturbances. Such a considerable number warrants close QT interval follow-up in predisposed patients.

Original languageEnglish
Pages (from-to)244-246
Number of pages3
JournalIsrael Medical Association Journal
Issue number4
StatePublished - Apr 2012


  • Long-term care elderly residents
  • QT interval disturbances


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