[Relationship between left ventricular dysfunction studied by multigated radionuclide angiography and carotid...

The multigated radio nuclide angiography was executed in 55 patients that were investigated for coronary heart disease and the left ventricular contour was determined in left anterior oblique view. The left ventricular contour was divided in 5 sectors and the isocontours (percentage of excursion between the systole and the diastole) and the regional ejection fractions were determined. The continuous wave Doppler test of the carotids was executed in the same patients. The patients were divided in 3 groups according to Doppler test: the group 1 owned the patients with the normal test (35 patients); the group 2 owned the patient with the moderately diseased test (14 patients); the group 3 owned the patients with frankly diseased test (6 patients). The following statistical analysis was executed: the 5 values of the isocontours and the 5 values of the ejection fractions were used to classify the patients in the 3 groups by mean of a discriminant analysis according to Fisher and the group for the highest conditional probability was considered for every patient. The analysis fixed that the 5 + 5 values of each patient classified correctly the 67.27 of the cases. If the only the values of the isocontours or of the ejection fractions or of the septum or of the ventricular lateral wall were used, the cases correctly classified were fewer. This paper contributes to the study of the relationship between the heart disease and the brain vessel disease and allows to regard the atherosclerosis a unique disease.