Title :
Computer detection of P-waves from wide QRS type arrhythmia recordings
Author :
Paul, JS ; Reddy, MRS ; Kumar, VJ ; Muralidharan, TR
Author_Institution :
Indian Inst. of Technol., Madras, India
Abstract :
A common feature in both VT and SVT is the occurrence of ventricular complexes with wide and large deflections, thereby masking the occurrence of the low amplitude P-waves. To identify the presence of atrio-ventricular (AV) dissociation, it becomes necessary to detect the P-waves. The work presented in this article focusses on the detection of the dissociated rhythm of P-waves based on the singular value ratio (SVR) spectrum of a residual signal constructed after subtracting the principal component from the original ECG record. The reliability of our method has been tested on 20 examples of wide QRS type arrhythmia waveforms and verified by comparing the reconstructed waveforms with the corresponding set of intra-atrial recordings
Keywords :
cepstral analysis; discrete cosine transforms; electrocardiography; medical signal processing; principal component analysis; signal reconstruction; singular value decomposition; ECG record; atrio-ventricular dissociation; cepstral decomposition; computer detection of P-waves; discrete cosine transform; dissociated rhythm; frequency response; low amplitude P-waves; principal component subtraction; reconstructed waveforms; residual signal; singular value ratio spectrum; tachycardia; ventricular complexes; wide QRS type arrhythmia recordings; Autocorrelation; Cardiology; Data mining; Discrete cosine transforms; Electrocardiography; Electrodes; Esophagus; Hospitals; Rhythm; Surface treatment;
Conference_Titel :
Computers in Cardiology 1998
Conference_Location :
Cleveland, OH
Print_ISBN :
0-7803-5200-9
DOI :
10.1109/CIC.1998.731950
