2-D spatiotemporal imaging of T-wave alternans in precordial ECG leads by means of Poincare sections

• Autorzy: Strumiłło P.
• Języki publikacji: EN

Abstrakty

EN

T-wave alternans (TWA), i.e., characteristic variations of the T-wave shape in ECGs are considered as important indicator of myocardial ischemia posing risk of sudden death. The aim of the study is proposition of a new visualization scheme of TWA detected in standard V1-V6 precordial leads. TWA levels are detected by means of Poincare sections then, 2-D spatiotemporal maps are obtained by means of biharmonic spline interpolation method. TWA mappings are tested on 30 ECGs recorded from postinfarction patients. TWA maps can be used for simultaneous spatio-temporal location of alternans in precordial leads – feature not offered in other TWA detection methods.

Słowa kluczowe

EN

ECG; T-wave repolarisation alternans; body surface mapping

PL

EKG; mapowanie powierzchni ciała

• Wydawca: University of Silesia, Institute of Informatics, Computer Systems Department
• Czasopismo: Journal of Medical Informatics & Technologies
• Rocznik: 2001
• Tom: Vol. 2, Part. 2
• Strony: MT67--MT73
• Opis fizyczny: Bibliogr. 10 poz., rys., tab., wykr.

Twórcy

autor

Strumiłło P.

• Technical University of Lodz, Institute of Electronics, 18/22Stefanowskiego Str., 90-924 Lodz, Poland

Bibliografia

• [1] BABLOYANTZ A., DESTEXHE A., Is the normal heart a periodic oscillator?, Biological Cybernetics, vol. 58, pp. 203-211, 1988.
• [2] BURRATINI L., ZAREBA W., MOSS A.J., Correlation method for detection of transient T-wave alternans in digital Holter ECG recordings, Annals of Noninvasive Electrocardiology, vol. 4, no. 4, pp. 416-424, 1999.
• [3] NEARING B.D., HUANG A.H., VERRIER R.L., Dynamic tracking of cardiac vulnerability by complex demodulation of the T-wave, Science, vol. 252, pp. 437-440, 1991.
• [4] PARKER T.S., CHUA L.O., Practical numerical algorithms for chaotic systems, Springer-Verlag, 1989.
• [5] ROSENBAUM D.S., JAKSON L.E., SMITH J.M., GARAN H., RUSKIN J.N., COHEN R.J., Electrical alternans and vulnerability to ventricular arrhythmias, New England Journal of Medicine, 330, pp. 235-241, 1994.
• [6] RUTA J., STRUMILLO P., Usefulness of the Poincare maps in detection of T-wave alternans in precordial leads of standard ECG - a comparison with the spectral method, Medical Science Moniotor, vol. 7, no. 3, pp. 471-476.
• [7] SANDWELL D. T., Biharmonic spline interpolation of Geos-3 and Seasat altimeter data, Geophysical Research Letters, vol. 2, pp. 139-142,1987.
• [8] SMITH J.M., CLANCY E.A., VALERI C.R., RUSKIN J.N., COHEN R.J., Electrical alternans and clinical electrical instability, Circulation, vol. 77, pp. 110-121, 1988.
• [9] STRUMILLO P., Haar-wavelet filter for precise detection of the QRS complex in ECGs, Proc. 5th International Conference on Computers in Medicine, Lodz, Poland, September 1999, vol. I, pp. 150-155.
• [10] STRUMILLO P., RUTA J., MACIEJEWSKI P., Spatial approximation of the body surface potentials across standard precordial leads for diagnosis of myocardial electrical events, IEEE Computers in Cardiology 1999, Hannover, September, 1999, vol. 26, pp. 297-300.