Title:Frequency Domain Mapping of Atrial Fibrillation - Methodology, Experimental Data and Clinical Implications
VOLUME: 8 ISSUE: 3
Author(s):Vassil B. Traykov, Robert Pap and Laszlo Saghy
Affiliation:Clinic of Cardiology and Angiology, Tokuda Hospital - Sofia, N.Vaptzarov blvd. 51B, 1407 Sofia, Bulgaria.
Keywords:Atrial fibrillation, frequency domain analysis, dominant frequency, fast Fourier transform
Abstract:The concept of dominant frequency (DF) has been used as a way to express local atrial activation rate during
atrial fibrillation (AF). The rotor theory explaining the pathophysiology of AF is widely based upon spatial distribution of
DF in the atria. Using frequency domain analysis to represent the rate of atrial activation by DF can avoid some of the
limitations of time domain analysis of signals during AF. Understanding the concept of DF is of utmost importance to the
proper use and interpretation of frequency domain analysis in AF. The current review focuses on the basic principles and
methodology of frequency domain analysis using the Fourier transform during different types of AF. It also provides an
update of the published experimental and clinical data on frequency domain analysis in light of the rotor theory for AF
maintenance.
