Assessment of ventricular repolarization in a large group of children with early onset deafness

Ercan Tutar, Mustafa Tekin, Tayfun Uçar, Elif Çomak, Burhan Öcal, Semra Atalay

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

This study examined the ECG traces of 397 deaf children (age 12.5 ± 2.9 years, range 6-19 years), after exclusion of cases with Jervell and Lange-Nielsen syndrome (JLNS), and compared them to those of 361 normal hearing counterparts (age 12.5 ± 2.7 years; range 7-18 years). An observer, who was unaware of the hearing status of the subjects, measured QT and QTc intervals and calculated dispersions of QT and QTc from standard 12-lead EGGs recorded at a speed of 25 mm/s at rest. Although the mean QT was found to be longer in deaf children than that observed in the control group (P < 0.0001), the mean QTc was significantly shorter (P < 0.0001). The mean heart rate was significantly lower in deaf children. When QT and QTc data were recompared after the children were grouped according to the heart rate, the observed difference became less significant or disappeared. In conclusion, there are no major abnormalities for repolarization parameters in children with congenital sensorineural deafness, when compared to hearing counterparts, if heart rates are similar. Based on these results, routine ECG screening of deaf children for repolarization abnormalities may be unnecessary unless they have a history of syncope or positive family history of syncope and/or early sudden death.

Original languageEnglish (US)
Pages (from-to)1217-1220
Number of pages4
JournalPACE - Pacing and Clinical Electrophysiology
Volume27
Issue number9
DOIs
StatePublished - Sep 1 2004

Keywords

  • Bradycardia
  • Electrocardiography
  • QT/QTc
  • QT/QTc dispersion
  • Sensorineural deafness

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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