Pulsed Doppler tissue imaging in different models of asymmetric septal hypertrophy

Asymmetric Septal Hypertrophy

This patient demonstrated abnormal echoes which were present in the pulmonic valve echocardiogram during systole, in the right ventricular outflow tract in systole and diastole, and more inferiorly in the right ventricular cavity in diastole. The tricuspid valve appeared normal. These findings suggested the presence of a tumor high in the right ventricle, which traversed the pulmonic orifice in...

Pulsed tissue Doppler imaging of the left ventricular septal mitral annulus in healthy dogs

This study evaluated pulsed TDI variables including the isovolumic time interval and duration of the major wave in a population of large healthy dogs. Longitudinal myocardial motion at the septal mitral annulus was evaluated with pulsed TDI in 45 healthy adult dogs. Maximal myocardial velocities, isovolumic time intervals, and duration of the myocardial waves were measured. The correlation betw...

Asymmetric Septal Hypertrophy and Myocardial Fiber Disarray

The specificity and significance of the asymmetric septal hypertrophy (ASH) and myocardial fiber disarray of idiopathic hypertrophic subaortic stenosis (IHSS) is uncertain. To examine this we studied 215 hearts, including normal embryos, fetuses, children, and adults; and hearts with congenital and acquired disease. Disproportionate septal thickening was present in all embryos and in some abnor...

Asymmetric septal hypertrophy and hypertrophic cardiomyopathy.

Washout rates of Tc-99m tetrofosmin in asymmetric septal hypertrophy.

The aim of this study was to evaluate the washout rate of Tc-99m tetrofosmin in asymmetric septal hypertrophy (ASH). As Tc-99m tetrofosmin accumulation and retention depend on sarcolemmal and/or mitochondrial function, the presence or absence of abnormalities in the washout rate of Tc-99m tetrofosmin could provide information about sarcolemmal and/or mitochondrial damage noninvasively. The stud...