High-resolution multichannel measurement and analysis of cardiac repolarization

• Autorzy: Fereniec M. , Maniewski R. , Karpiński G. , Opolski G. , Rix H.
• Języki publikacji: EN

Abstrakty

EN

Time and spatial inhomogeneity of the repolarization phase is considered to be an important, noninvasive indication of sudden cardiac death in patients after myocardial infarction. Analysis of spatial variability of the repolarization phase was carried out on signals recorded with the 64-channel system for measurement of high-resolution ECG. The lead position on the torso, according to the University of Amsterdam lead system, was used. A new parameter, called the T-wave shape index and the distribution function method, as a method sensitive to shape variations, were applied to examine spatial variability of the T-wave shape in HR ECG maps. A group of 14 healthy volunteers and a group of 12 patients after myocardial infarction were studied. The diversity of spatial distributions of the parameters connected to the shape of the T-wave is clearly noticeable in the group of patients after myocardial infarction. The similarity of spatial distributions of proposed parameters in the group of healthy subjects is observed. The obtained results confirm the hypothesis that the spatial heterogeneity of the repolarization phase increases after myocardial infarction.

Słowa kluczowe

EN

high resolution ECG; repolarization phase; shape variability; myocardial infarction

PL

elektrokardiografia; wysoka rozdzielczość; zawał; mięsień sercowy; zmienność kształtu

• Wydawca: Nałęcz Institute of Biocybernetics and Biomedical Engineering of the Polish Academy of Sciences ; Elsevier
• Czasopismo: Biocybernetics and Biomedical Engineering
• Rocznik: 2008
• Tom: Vol. 28, no. 3
• Strony: 61--69
• Opis fizyczny: Bibliogr. 14 poz., wykr.

Twórcy

autor

Fereniec M.

autor

Maniewski R.

autor

Karpiński G.

autor

Opolski G.

autor

Rix H.

• Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, ul. Ks. Trojdena 4, 02-109 Warsaw, Poland,

Bibliografia

• 1. Bernardo D., Langley P., Murray A.: Effect of changes in heart rate and in action potential duration on the electrocardiogram T wave shape. Physiological Measurement, 2002, 23, 355-364.
• 2. Antzelevitch C., Litovsky S., Lukas A.: Epicardium versus endocardium Cardiac Electrophysiology: From Cell to Bedside. D. Zipes and J. Jalife, Philadelphia, 1991, 386-395.
• 3. Kuo C.S., Munakata K., Reddy C.P., Surawicz B.: Characteristics and possible mechanism of ventricular arrhythmia dependent on the dispersion of action potential durations. Circulation, 1983, 67, 1356-1367.
• 4. Corlan A.D., Ambroggi L.: New quantitative methods of ventricular repolarization analysis in patients with left ventricular hypertrophy. Italian Heart Journal, 2000, August, 542-548.
• 5. Sandor G., Kozmann G.: Methods for Assessement of Ventricular Repolarization: a Model Study. Proceedings of Computers in Cardiology 2000, 363-367.
• 6. Tysler M., Turzova M., Szathmary V.: Assessment of Heart Repolarization Properties from Body Surface Potentials Maps. Measurement Science Review, 2001, 1, 1, 23-26.
• 7. Gang Y., Hnatkova K., Guo X., Batchvarov V., Burak A., McKenna W.J., Malik M.: Reproducibility of T wave morphology assessment in patients with hypertrophic cardiomyopathy and in healthy subject. Proceedings Computers in Cardiology, 2001, 28, 393-396.
• 8. Okin P.M. at al.: Principal Component Analysis of T Wave and Prediction of Cardiovascular Mortality in American Indians. Circulation, 2002, 105-714.
• 9. Fereniec M., Kacprzak M., Karpiński G., Maniewski R., Opolski G., Ircha D.: Evaluation of T-Wave Morphology in High - Resolution ECG Mapping. International Journal of Bioelectromagnetism, 2002, 4, 2, 101-102.
• 10. Rix H., Malengé J.P.: Detecting small variations in shape. IEEE Transactions on Systems, Man, and Cybernetics, 1980, 10, 90-96.
• 11. Fereniec M., Kacprzak M., Maniewski R., Zbieć A., Ircha D.: The 64 channel system for high resolution ECG mapping. Proceedings of Computers in Cardiology, 2001, 28, 513-515.
• 12. Hoekama R., Uijen G., van Oosterom A.: On Selecting a Body Surface Mapping Procedure. Journal of Electrocardiology, 1999, 32, 93-102.
• 13. Lux R.L., Smith C.R., Wyatt R.F., Evans A.K., Vincent G.M., Abildskov J.A.: Clinically practical lead systems for improved electrocardiography: Comparison with precordial grids and conventional lead systems. Circulation, 1979, 59, 356-363.
• 14 Wang X., Kamakura S., Kiyotaka M., Ogawa M., Tanabe Y., Shimomura K.: Relation between spatial distribution of late potentials and location of origin of premature ventricular complexes on body surface map in patients with postinfarction ventricular tachycardia. International Journal of Cardiology, 2000, 72, 111-119.