"1"^^ . "Peca, Marek" . . . "atrial fibrillation; dominant frequency; spectral analysis"@en . "446588" . . "Real-time Dominant Frequency Mapping of Atrial Fibrillation - Feasibility Study"@en . "RIV/68407700:21230/07:00135815" . . "1"^^ . . . "21230" . . "9" . . "GB - Spojen\u00E9 kr\u00E1lovstv\u00ED Velk\u00E9 Brit\u00E1nie a Severn\u00EDho Irska" . "Real-time Dominant Frequency Mapping of Atrial Fibrillation - Feasibility Study" . . . "Real-time Dominant Frequency Mapping of Atrial Fibrillation - Feasibility Study"@en . "1099-5129" . "7"^^ . . "Real-time Dominant Frequency Mapping of Atrial Fibrillation - Feasibility Study" . "Z(MSM6840770038)" . . . "[431561B238BC]" . "Analysis of local dominant frequency of atrial fibrillation (AF) identifies the sites of high-frequency activity that represent the substrate for arrhythmia perpetuation. We developed a system that analyzes bipolar mapping signal, sampled, digitally filtered, rectified. Obtained envelope is processed by discrete Fourier transform (3 Hanning-weighted 1-second segments, 50% overlap). Dominant frequency (DF) is calculated by autocorrelation function in order to suppress the impact of higher harmonic spectral components. Colour-coded electroanatomical map of DF is created. We investigated 10 patients with paroxysmal/persistent AF. We documented hierarchical distribution of DF reflecting one or more left atrium mother rotors. In case of paroxysmal AF, single driver within a pulmonary vein antrum was usually identified with centrifugal DF gradient. In persistent AF, we observed more disperse distribution of sites with high-frequency activity with predilection at interatrial septum." . . "Suppl1.3" . "RIV/68407700:21230/07:00135815!RIV10-MSM-21230___" . "Analysis of local dominant frequency of atrial fibrillation (AF) identifies the sites of high-frequency activity that represent the substrate for arrhythmia perpetuation. We developed a system that analyzes bipolar mapping signal, sampled, digitally filtered, rectified. Obtained envelope is processed by discrete Fourier transform (3 Hanning-weighted 1-second segments, 50% overlap). Dominant frequency (DF) is calculated by autocorrelation function in order to suppress the impact of higher harmonic spectral components. Colour-coded electroanatomical map of DF is created. We investigated 10 patients with paroxysmal/persistent AF. We documented hierarchical distribution of DF reflecting one or more left atrium mother rotors. In case of paroxysmal AF, single driver within a pulmonary vein antrum was usually identified with centrifugal DF gradient. In persistent AF, we observed more disperse distribution of sites with high-frequency activity with predilection at interatrial septum."@en . . "Europace" .