Title :
Dynamic number of segments of spectral temporal mapping of the signal-averaged electrocardiogram derived from duration of the QRS complex
Author :
Kulakowski, Piotr ; Malik, Marek ; Bashir, Yaver ; Heald, Spencer ; Odemuyiwa, Olusola ; Camm, A. John
Author_Institution :
Dept. of Cardiological Sci., St. George´´s Hospital Med. Sch., London, UK
Abstract :
The signal-averaged electrocardiogram (ECG) was recorded and analyzed in 30 postinfarction patients with ventricular tachycardia and long late potentials, and in 30 controls with normal signal-averaged ECG to investigate whether the results of spectral temporal mapping of the signal-averaged ECG are disturbed in patients with long late potentials, and to calculate a formula for computing the number of ECF segments to be analyzed in such patients. When a new formula, based on the difference between the total filtered and the standard QRS durations, was used, the identification of patients with ventricular tachycardia and long late potentials was significantly improved
Keywords :
electrocardiography; medical signal processing; ECF segments; QRS complex duration; long late potentials; postinfarction patients; signal-averaged electrocardiogram; spectral temporal mapping; ventricular tachycardia; Density estimation robust algorithm; Electrocardiography; Filtering; Filters; History; Noise level; Signal analysis; Signal mapping; Time domain analysis; Voltage;
Conference_Titel :
Computers in Cardiology 1992, Proceedings of
Conference_Location :
Durham, NC
Print_ISBN :
0-8186-3552-5
DOI :
10.1109/CIC.1992.269447
