Application of spectral frequency analysis in atrial fibrillation mechanism assessment
Urbanek, P.; Kuklik, P.Å‚; Szumowski, L.; Derejko, P.Å‚; Kepski, R.; Bodalski, R.; Szufladowicz, E.; Przybylski, A.; Orczykowski, M.Å‚; Zakrzewska, J.; Zebrowski, J.; Walczak, F.
Kardiologia Polska 64(9): 1021-1025
2006
ISSN/ISBN: 0022-9032 PMID: 17054038 Document Number: 598406
Recent studies have demonstrated spatio-temporal organisation in atrial fibrillation (AF), with a highest dominant frequencies (DF) at pulmonary veins ostia (PVo). We present a case of 58-year-old woman with AF evaluated by spectral frequency analysis. Simultaneous recordings at each veno-atrial junction and coronary sinus were obtained. Sequential fast Fourier transforms (FFT) of digitalized signals were performed. FFT profiles were analysed to determine DF. Low DF recorded at right inferior PVo suggested no contribution to AF process. Ablation of high DF PVo and low DF SVC with nonuniform anisotropic conduction resulted in AF termination and good clinical outcome in 1-year follow-up.