QRS subtraction for atrial electrograms: flat, linear and spline interpolations.
Med Biol Eng Comput
; 49(11): 1321-8, 2011 Nov.
Article
em En
| MEDLINE
| ID: mdl-21959592
ABSTRACT
The main objective of this article is to implement and compare QRS subtraction techniques for intra-cardiac atrial electrograms based on using the surface ECG as a reference. A band-pass filter between 8 and 20 Hz followed by rectification, and then a low-pass filter at 6 Hz are used for QRS detection. QRS subtraction was performed using three different approaches flat, linear and spline interpolations. QRS subtraction affects the power of the signals but it normally does not affect the dominant frequency. The average power of the atrial electrograms after QRS subtraction is significantly reduced for frequencies above 10 Hz.
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Fibrilação Atrial
/
Processamento de Sinais Assistido por Computador
/
Técnicas Eletrofisiológicas Cardíacas
Tipo de estudo:
Evaluation_studies
Limite:
Humans
Idioma:
En
Revista:
Med Biol Eng Comput
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
Reino Unido