Mystery of QTc interval dispersion

Am J Cardiol. 1997 Mar 15;79(6):785-7. doi: 10.1016/s0002-9149(96)00869-7.


Reporting QTc dispersion values without paying attention to the original QT dispersion values and to the heart rate may be seriously misleading because differences in QTc dispersion between clinically well-defined populations may only be caused by differences in the underlying heart rate. This is demonstrated by showing the significant differences in "heart-rate corrected" length of the surname between long-term survivals and nonsurvival patients of acute myocardial infarction.

Publication types

  • Editorial
  • Review

MeSH terms

  • Diagnostic Errors
  • Electrocardiography / methods*
  • Heart Rate
  • Humans