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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...
In the present work, we have studied dynamic changes of QRS loop in the vectocardiogram (VCG) of 80 patients that underwent percutaneous transluminal coronary angioplasty (PTCA). The VCG was obtained for each patient using the XYZ orthogonal leads of their electrocardiographic (ECG) records acquired before, during and after PTCA procedure. In order to analyze the variations of VCG, it has been proposed...
In this work we analyzed the T wave width evolution on an ECG database containing 27 records coming from diabetic patients performing the Valsalva Maneuver (VM). The objective is to assess whether the maneuver is accompanied with early signs of ischemia and if those are measurable by T wave shortening. The hypothesis for this T wave shortening is that endocardial action potentials reduce their duration...
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