ECG signal quantization effects in the analysis of atrial fibrillation

Vaya, C.; Rieta, J.J.

doi:10.1109/cic.2007.4745526

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“…Time-domain methods have been successfully applied in the characterization of AF periods using ECG [25]. Anuradha et al [2] use time-domain methods to classify the cardiac signals.…”

Section: Time Analysismentioning

confidence: 99%

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

Ahmad

Salinet

Brown

et al. 2011

Med Biol Eng Comput

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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.

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“…Time-domain methods have been successfully applied in the characterization of AF periods using ECG [25]. Anuradha et al [2] use time-domain methods to classify the cardiac signals.…”

Section: Time Analysismentioning

confidence: 99%