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QRS subtraction for atrial electrograms: flat, linear and spline interpolations.

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 detecti...

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Publicado en:Medical & Biological Engineering & Computing Vol. 49; no. 11; pp. 1321 - 1329
Autores principales: Ahmad A, Salinet JL Jr, Brown P, Tuan JH, Stafford P, Ng GA, Schlindwein FS, Ahmad, A, Salinet, J L Jr, Brown, P, Tuan, J H, Stafford, P, Ng, G Andre, Schlindwein, F S
Formato: research Journal Article
Publicado: Springer Nature Nov2011
Acceso en línea:Ver este registro en EBSCOhost
Sumario: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.