Modulation of spatial variance of ventricular repolarization after myocardial infarction

MARIA P BONOMINI; PEDRO D ARINI

BIOMEDICAL SIGNAL PROCESSING AND CONTROL

ELSEVIER SCI LTD

Lugar: Amsterdam; Año: 2016 vol. 34 p. 214 - 219

1746-8094

Myocardial infarction (MI) alters spatial features of thesurface electrocardiogram. Spatial variance of the T-wave (SVT )describes the interlead dispersion about a mean T-wave morphology. SVTwas linked to arrhythmiavulnerability and sudden cardiac death. In this work, we studied theevolution of SVT over the healing (MI7, up to 7 days after MI) and healed(MI60, from 60 days on post-MI) stages following MI. A control group(n=49) was compared to paired MI7 and MI60 groups (n=39). Fiverepresentative sets of frontal and precordial leads were analyzed: I-IIIII,V1-V2-V3, V4-V5-V6, aVF -V2-V5 and II-aVF -V5. SVT index signicantlyincreased at MI7 (p