Med Biol Eng Comput - QRS subtraction for atrial electrograms: flat, linear and spline interpolations.

Tópicos

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Resumo

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.

Resumo Limpo

main object articl implement compar qrs subtract techniqu intracardiac atrial electrogram base use surfac ecg refer bandpass filter hz follow rectif lowpass filter hz use qrs detect qrs subtract perform use three differ approach flat linear spline interpol qrs subtract affect power signal normal affect domin frequenc averag power atrial electrogram qrs subtract signific reduc frequenc hz

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