Β’ Καρδιολογικό Τμήμα, Γ.Ν.Α. «Ο ΕΥΑΓΓΕΛΙΣΜΟΣ»
Modification of atrial substrate is a necessary complement in patients with non-paroxysmal atrial fibrillation. Radiofrequency ablation guided by intracardiac electrograms is a method used in several studies with various results. Complexity of atrial fibrillation electrograms makes signal analysis almost impossible in time domain but frequency domain analysis is a powerful tool which overtakes this barrier. Dominant frequency is an outcome of atrial electrogram signal frequency analysis that estimates activation cycle length and location of target sites for substrate modification. However dominant frequency is not free of limitations and technical considerations should be understood for accurate results.
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