Title :
The effects of coronary occlusion location on the RR signal
Author :
Clariá, F. ; Vallverdú, M. ; Caminal, P.
Author_Institution :
ESAII Dept., Tech. Univ. of Catalonia, Spain
Abstract :
We carry out the study of the energy contribution of the RR signal in the three frequency bands (LF, MF, and HF) during percutaneous transluminal coronary angioplasty. Furthermore, variables based on instantaneous frequency and on group delay computed from RR signal in the three frequency bands are analyzed. All these variables are calculated by applying the Choi-Williams distribution to the RR signal. The purpose of studying these variables is to provide a punctual location of the energy in the time-frequency plane, since this can allow different kinds and locations of coronary lesions to be distinguished.
Keywords :
cardiovascular system; electrocardiography; medical signal processing; signal representation; time series; time-frequency analysis; Choi-Williams distribution; ECG recordings; RR signal; cardiovascular system; coronary lesions; coronary occlusion location effects; energy contribution; group delay; instantaneous frequency; ischemia; percutaneous transluminal coronary angioplasty; time series; time-frequency plane; Arterial occlusion; Arteries; Cardiovascular system; Control systems; Delay; Heart rate variability; Ischemic pain; Rhythm; Signal analysis; Time frequency analysis;
Journal_Title :
Engineering in Medicine and Biology Magazine, IEEE
DOI :
10.1109/MEMB.2002.1032640
