Abstract
Introduction: Reference values for T-wave morphology analysis and evaluation of the relationship with age, sex, and heart rate are lacking in the literature. In this study, we characterized T-wave morphology in a large sample of healthy individuals. Method: A total of 1081 healthy subjects (83% men; range, 17-81 years) were included. T-wave morphology variables describing the duration, area, slopes, amplitude, and distribution were calculated using 10-second digital electrocardiogram recordings. Multivariate regression was used to test for dependence of T-wave variables with the subject age, sex, and heart rate. Results: Lead V5 (men vs women) T-wave variables were as follows: amplitude, 444 versus 317 μV; area, 48.4 versus 33.2 ms * mV; Tpeak-Tend interval, 94 versus 92 milliseconds; maximal descending slope, -5.15 versus -3.69 μV/ms; skewness, -0.24 versus -0.22; and kurtosis, -0.36 versus -0.35. Tpeak-Tend interval, skewness, and kurtosis were independent of age, sex, and heart rate (r2 < 0.05), whereas Bazett-corrected QT-interval was more dependent (r2 = 0.40). Conclusion: A selection of T-wave morphology variables is found to be clinically independent of age, sex, and heart rate, including Tpeak-Tend interval, skewness, and kurtosis.
Original language | English |
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Journal | Journal of Electrocardiology |
Volume | 43 |
Issue number | 1 |
Pages (from-to) | 31-9 |
Number of pages | 9 |
ISSN | 0022-0736 |
DOIs | |
Publication status | Published - Jan 2010 |
Keywords
- Adolescent
- Adult
- Aged
- Aged, 80 and over
- Electrocardiography
- Female
- Heart Conduction System
- Heart Rate
- Humans
- Male
- Middle Aged
- Minnesota
- Reference Values
- Reproducibility of Results
- Sensitivity and Specificity
- Young Adult