TY  - CHAP
U1  - Konferenzveröffentlichung
A1  - Tumampos, Jonas
A1  - Heinke, Matthias
A1  - Hörth, Johannes
T1  - Spectral analysis of signal averaging electrocardiography in atrial and ventricular tachyarrhythmias
T2  - Biomedical Engineering / Biomedizinische Technik
N2  - Background: Targeting complex fractionated atrial electrograms detected by automated algorithms during ablation of persistent atrial fibrillation has produced conflicting outcomes in previous electrophysiological studies. The aim of the investigation was to evaluate atrial and ventricular high frequency fractionated electrical signals with signal averaging technique.
Methods: Signal averaging electrocardiography (ECG) allows high resolution ECG technique to eliminate interference noise signals in the recorded ECG. The algorithm uses automatic ECG trigger function for signal averaged transthoracic, transesophageal and intracardiac ECG signals with novel LabVIEW software (National Instruments, Austin, Texas, USA). For spectral analysis we used fast fourier transformation in combination with spectro-temporal mapping and wavelet transformation for evaluation of detailed information about the frequency and intensity of high frequency atrial and ventricular signals.
Results: Spectral-temporal mapping and wavelet transformation of the signal averaged ECG allowed the evaluation of high frequency fractionated atrial signals in patients with atrial fibrillation and high frequency ventricular signals in patients with ventricular tachycardia. The analysis in the time domain evaluated fractionated atrial signals at the end of the signal averaged P-wave and fractionated ventricular signals at the end of the QRS complex. The analysis in the frequency domain evaluated high frequency fractionated atrial signals during the P-wave and high frequency fractionated ventricular signals during QRS complex. The combination of analysis in the time and frequency domain allowed the evaluation of fractionated signals during atrial and ventricular conduction.
Conclusions: Spectral analysis of signal averaging electrocardiography with novel LabVIEW software can utilized to evaluate atrial and ventricular conduction delays in patients with atrial fibrillation and ventricular tachycardia. Complex fractionated atrial electrograms may be useful parameters to evaluate electrical cardiac arrhythmogenic signals in atrial fibrillation ablation.
KW  - wavelet transformation
KW  - signal averaging
Y1  - 2017
SN  - 1862-278X (Online)
SS  - 1862-278X (Online)
SN  - 0013-5585 (Print)
SS  - 0013-5585 (Print)
U6  - https://doi.org/10.1515/bmt-2017-5071
DO  - https://doi.org/10.1515/bmt-2017-5071
VL  - 62
IS  - S1
SP  - S366
S1  - 1
PB  - Walter de Gruyter
CY  - Berlin, Boston
ER  -