DocumentCode :
3174001
Title :
Geometrical and temporal ECG features for quantification of increased ventricular repolarization dispersion in an experimental heart rabbit model
Author :
Arini, Pd ; Valverde, Er ; Bertran, Gc ; Laguna, P.
Author_Institution :
Argentina Inst. of Math., CONICET
fYear :
2005
fDate :
25-28 Sept. 2005
Firstpage :
89
Lastpage :
92
Abstract :
Abnormal increase of ventricular repolarization dispersion (VRD) is an important risk factor for severe arrhythmia development. An increased VRD implies a modification of the spatio/temporal T wave morphology. Our objective is to study the ECG derived VRD feature markers that better represent the electrical modifications generated by increased VRD in an in vitro rabbit heart experiment which has global VRD induced, at all myocardium areas, by supplying d-Sotalol (dS) and by premature ventricular stimulation (PVS). Temporal (T-wave duration, T W) and geometrical (mean repolarization axis, ThetaXT , measured respect to a fix reference X axis) features were shown as the better markers of increased VRD, with the higher discrinant power in the T wave duration. Results are: TW:(95plusmn7 ms) vs (118plusmn15 ms) for Control vs PVS; TW:(78plusmn10 ms) vs (133plusmn29 ms) for Control vs dS; ThetaXT-(35plusmn51deg) vs (117plusmn49deg) for Control vs dS
Keywords :
bioelectric potentials; biomedical measurement; electrocardiography; muscle; spatiotemporal phenomena; arrhythmia; d-Sotalol; geometrical features; heart rabbit model; myocardium areas; premature ventricular stimulation; risk factor; spatio-temporal T wave morphology; temporal ECG features; ventricular repolarization dispersion; Biomedical engineering; Electrocardiography; Electrodes; Heart rate variability; In vitro; Mathematical model; Protocols; Rabbits; Signal analysis; Solid modeling;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Computers in Cardiology, 2005
Conference_Location :
Lyon
Print_ISBN :
0-7803-9337-6
Type :
conf
DOI :
10.1109/CIC.2005.1588041
Filename :
1588041
Link To Document :
بازگشت