Wavelet variance analysis of high-resolution ECG in patients prone to VT/VF during cardiac electrophysiology studies
2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628) - Tập 2 - Trang 1133-1136 vol.2
Tóm tắt
This study evaluates influence of increased heart rate on beat-to-beat variability of vector magnitude depolarisation signal in patients admitted for cardiac electrophysiology studies. Electrical variability is quantitatively assessed during normal sinus rhythm and during atrial pacing by means of the Morlet wavelet transform variance in high-frequency region of 100 Hz to 250 Hz. Results suggest that pacing increases the electrical variability of QRS-complex more in patients with inducible ventricular tachyarrhythmia than in non-inducible ones. Instead of provoking arrhythmias by more intense stimulation to evaluate risk of VT/VF, more natural perturbation of the system by increasing heart rate and measuring the described parameter may be useful.
Từ khóa
#Wavelet analysis #Analysis of variance #Electrocardiography #Wavelet transforms #Myocardium #Frequency estimation #Heart rate #Circuits #Mathematical model #PhysicsTài liệu tham khảo
10.1109/CIC.1996.542537
zipes, 1995, Cardiac electrophysiology - from cell to bedside
anderson, 0, Clinical value of cardiac electrophysiological studies, [3], 1133
10.1016/0002-8703(91)90728-Z
marchlinski, 0, Electrical events associated with arrhythmia initiation and stimulation techniques for arrhythmia prevention, [3], 863
callans, 0, Ventricular tachycardias in the setting of coronary artery disease, [3], 732
10.1109/10.909634
10.1109/CIC.1995.482709
10.1088/0967-3334/19/1/007