Cuantificación de la dispersión espacial de la repolarización ventricular cardíaca a través del electrocardiograma de superficie

PEDRO D. ARINI, ERIC LACIAR

Revista Argentina de Cardiologia

Sociedad Argentina de Cardiologia

Lugar: Buenos Aires (edición bimestral, enero-febrero); Año: 2009 vol. 77 p. 47 - 55

0034-7000

The ventricular repolarization dispersion (VRD) is determined basically by the heterogeneity of the action potentials in different myocardial regions. Usually the heart responds to certain physiopathological states by producing a VRD increase, which may lead to a malignant ventricular arrhythmia and/or sudden death. For 25 years, the VRD has been quantified with several indexes obtained by computer processing the electrocardiogram, in order to identify cardiac-risk patients. These indexes are based on the detection of T wave changes in duration or form, in the presence of cardiopathies. A revision of the spatial dispersion indexes and their potential as supporting tool for the diagnosis of cardiac risk is presented in this work.