Different methods of 3D QRS area calculation from vectorcardiographic X, Y, and Z Leads.
Pacing Clin Electrophysiol
; 47(7): 974-976, 2024 Jul.
Article
em En
| MEDLINE
| ID: mdl-38529807
ABSTRACT
3DQRSarea is a strong marker for cardiac resynchronization therapy and can be obtained by taking the (i) summation or the (ii) difference of the areas subtended by positive and negative deflections in X, Y, Z vectorcardiographic electrocardiogram (ECG) leads. We correlated both methods with the instantaneous-absolute-3D-voltage-time-integral (VTIQRS-3D). 3DQRSarea consistently underestimated the VTIQRS -3D, but the summation method was a closer and more reliable approximation. The dissimilarity was less apparent in left bundle branch block (r2 summation .996 vs. difference .972) and biventricular paced ECGs (r2 .996 vs. .957) but was more apparent in normal ECGs (r2 .988 vs. .653).
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Vetorcardiografia
Limite:
Female
/
Humans
/
Male
Idioma:
En
Revista:
Pacing Clin Electrophysiol
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
Estados Unidos