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Description
| - 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.
- 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)
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Title
| - Real-time Dominant Frequency Mapping of Atrial Fibrillation - Feasibility Study
- Real-time Dominant Frequency Mapping of Atrial Fibrillation - Feasibility Study (en)
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skos:prefLabel
| - Real-time Dominant Frequency Mapping of Atrial Fibrillation - Feasibility Study
- Real-time Dominant Frequency Mapping of Atrial Fibrillation - Feasibility Study (en)
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skos:notation
| - RIV/68407700:21230/07:00135815!RIV10-MSM-21230___
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
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http://linked.open...iv/cisloPeriodika
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/68407700:21230/07:00135815
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - atrial fibrillation; dominant frequency; spectral analysis (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
| - GB - Spojené království Velké Británie a Severního Irska
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...UplatneniVysledku
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http://linked.open...v/svazekPeriodika
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http://linked.open...iv/tvurceVysledku
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http://linked.open...n/vavai/riv/zamer
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issn
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number of pages
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http://localhost/t...ganizacniJednotka
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