Title :
Finding coordinated atrial activity during ventricular fibrillation using wavelet decomposition
Author :
Addison, Paul S. ; Watson, James N. ; Clegg, Gareth R. ; Steen, Petter A. ; Robertson, Colin E.
Author_Institution :
Fac. of Eng. & Comput., Napier Univ. of Edinburgh, UK
Abstract :
Until recently, the ECG recorded during ventricular fibrillation was thought to represent disorganized and unstructured electrical activity of the heart. Using a new signal analysis technique based on wavelet decomposition, we have begun to reveal previously unreported structure within the ECG tracing. We report preliminary findings that provide the first evidence linking this structure to unexpected mechanical phenomena occurring in the heart.
Keywords :
electrocardiography; medical signal processing; signal classification; wavelet transforms; Morlet wavelet; aorta pressure trace; coordinated atrial activity; porcine model; signal analysis technique; sudden cardiac death; surface ECG; unstructured electrical activity; ventricular fibrillation; wavelet decomposition; zero phase plot; Anesthesia; Animals; Continuous wavelet transforms; Electrocardiography; Fibrillation; Heart; Medical treatment; Pressure measurement; Signal analysis; Wavelet analysis; Animals; Atrial Function, Right; Death, Sudden, Cardiac; Diagnosis, Differential; Electric Stimulation; Electrocardiography; Electrophysiologic Techniques, Cardiac; Heart Arrest, Induced; Heart Atria; Humans; Models, Animal; Models, Cardiovascular; Models, Statistical; Pressure; Swine; Tachycardia, Ventricular; Ventricular Fibrillation;
Journal_Title :
Engineering in Medicine and Biology Magazine, IEEE
