IAM   02674
INSTITUTO ARGENTINO DE MATEMATICA ALBERTO CALDERON
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Analysis of QRS Loop in the Vectorcardiogram of Patients with Chagas Disease
Autor/es:
RAÚL CORREA; ERIC LACIAR; PEDRO ARINI; RAIMON JANÉ
Reunión:
Conferencia; 32nd Annual International Conference of the IEEE EMBS; 2010
Resumen:
In the present work, we have studied the QRS
loop in the Vectorcardiogram (VCG) of 95 chronic chagasic
patients classified in different groups (I, II and III) according
to their degree of myocardial damage. For comparison, the
VCGs of 11 healthy subjects used as control group (Group O)
were also examined. The QRS loop was obtained for each
patient from the XYZ orthogonal leads of their High-
Resolution Electrocardiogram (HRECG) records. In order to
analyze the variations of QRS loop in each detected beat, it has
been proposed in this study the following vectorcardiographic
parameters a) Maximum magnitude of the cardiac
depolarization vector, b) Volume, c) Area of QRS loop, d) Ratio
between the Area and Perimeter, e) Ratio between the major
and minor axes of the QRS loop and f) QRS loop Energy. It has
been found that one or more indexes exhibited statistical
differences (p<0.05) between groups 0-II, O-III, I-II, I-III and
II-III. We concluded that the proposed method could be use as
complementary diagnosis technique to evaluate the degree of
myocardial damage in chronic chagasic patients.