Systolic and Diastolic Septal and Posterior Wall Echocardiographic Measurements in Normal Subjects

M-mode echocardiographic measurement of septal and left ventricular ex cursions and velocities was attempted in 109 subjects. Seventy subjects had ade quate echocardiograms enabling detailed measurement. Two groups of subjects were studied: a group of normal adults aged nineteen to seventy-eight years and a group of normal juveniles aged nine to eighteen years. The posterior wall excursion (PWE), systolic septal excursion (SSE), diastolic septal excursion (DSE), and diastolic septal velocity (DSV) did not differ in these groups. There were significant differences in the posterior wall excursion during isovolumetric contraction (B-Ce, p < 0.002), mean posterior wall velocity (PWV mean, p < 0.002), and systolic septal velocity (SSV, p=0.05) between the two groups. The measurements were obtained by using the recently published method of the specific points for labeling and description of the wall motion.

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