Heart Rate Dependency and Inter-Lead Variability of the T Peak - T End Intervals.
ECG lead comparison
T wave peak
T wave spatial loop
heart rate dependency
sex differences
Journal
Frontiers in physiology
ISSN: 1664-042X
Titre abrégé: Front Physiol
Pays: Switzerland
ID NLM: 101549006
Informations de publication
Date de publication:
2020
2020
Historique:
received:
17
08
2020
accepted:
14
10
2020
entrez:
1
1
2021
pubmed:
2
1
2021
medline:
2
1
2021
Statut:
epublish
Résumé
The electrocardiographic (ECG) assessment of the T peak-T end (Tpe) intervals has been used in many clinical studies, but several related physiological aspects have not been reported. Specifically, the sources of the Tpe differences between different ECG leads have not been systematically researched, the relationship of Tpe duration to underlying heart rate has not been firmly established, and little is known about the mutual correspondence of Tpe intervals measured in different ECG leads. This study evaluated 796,620 10-s 12-lead ECGs obtained from long-term Holters recorded in 639 healthy subjects (311 female) aged 33.8 ± 9.4 years. For each ECG, transformation to orthogonal XYZ lead was used to measure Tpe in the orthogonal vector magnitude (used as a reference for lead-to-lead comparisons) and to construct a three-dimensional T wave loop. The loop roundness was expressed by a ratio between its circumference and length. These ratios were significantly related to the standard deviation of Tpe durations in different ECG leads. At the underlying heart rate of 60 beats per minute, Tpe intervals were shorter in female than in male individuals (82.5 ± 5.6 vs 90.0 ± 6.5 ms,
Identifiants
pubmed: 33384609
doi: 10.3389/fphys.2020.595815
pmc: PMC7769826
doi:
Types de publication
Journal Article
Langues
eng
Pagination
595815Subventions
Organisme : British Heart Foundation
ID : NH/16/2/32499
Pays : United Kingdom
Informations de copyright
Copyright © 2020 Andršová, Hnatkova, Šišáková, Toman, Smetana, Huster, Barthel, Novotný, Schmidt and Malik.
Déclaration de conflit d'intérêts
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
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