title: [Application of spectral frequency analysis in atrial fibrillation mechanism assessment].
abstract: 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.
authors.affiliation: Instytut Kardiologii, ul. Alpejska 42, 04-628 Warszawa. urbil@wp.pl
authors.forename: Piotr
authors.initials: P
authors.lastname: Urbanek
authors.forename: Paweł
authors.initials: P
authors.lastname: Kuklik
authors.forename: Lukasz
authors.initials: L
authors.lastname: Szumowski
authors.forename: Paweł
authors.initials: P
authors.lastname: Derejko
authors.forename: Roman
authors.initials: R
authors.lastname: Kepski
authors.forename: Robert
authors.initials: R
authors.lastname: Bodalski
authors.forename: Ewa
authors.initials: E
authors.lastname: Szufladowicz
authors.forename: Andrzej
authors.initials: A
authors.lastname: Przybylski
authors.forename: Michał
authors.initials: M
authors.lastname: Orczykowski
authors.forename: Joanna
authors.initials: J
authors.lastname: Zakrzewska
authors.forename: Jan
authors.initials: J
authors.lastname: Zebrowski
authors.forename: Franciszek
authors.initials: F
authors.lastname: Walczak
mesh_terms: D001281:Atrial Fibrillation / Q000145:classification / Q000175:diagnosis* / Q000628:therapy; D017115:Catheter Ablation / Q000379:methods; D004562:Electrocardiography / Q000379:methods*; D022062:Electrophysiologic Techniques, Cardiac / Q000379:methods; D005260:Female; D006801:Humans; D008875:Middle Aged; D011667:Pulmonary Veins / Q000503:physiopathology; D012815:Signal Processing, Computer-Assisted; D017550:Spectroscopy, Fourier Transform Infrared