Student Paper Spectrum of Hypertrophic Cardiomyopathy Viewed by M-Mode, 2D, and Doppler Echocardiography

Hypertrophic cardiomyopathy is a primary myocardial disease that is characterized by a hypertrophied and nondilated left ventricle. Echocardiography has proved to be a valuable noninvasive tool in the diagnosis, follow-up, assessment of therapy, and family study of hypertrophic cardiomyopathy. A complete M-mode, 2D, and Doppler examination should be performed to define the structural, functional, and flow abnormalities in this condition. Key words: asymmetric septal hypertrophy, systolic anterior motion, hypertrophic cardiomyopathy, hyper-trophic obstructive cardiomyopathy, hypertrophic sub-aortic stensosis. Hypertrophic cardiomyopathy is a primary myocardial disease that is characterized in its early stages by a hypertrophied, hyperdynamic, and non-dilated left ventricle. It generally produces asym-metric hypertrophy of the heart with the greatest affinity for the septum. One needs to exclude secondary causes of the hypertrophy such as aortic stenosis or hypertension. It is usually inherited as an autosomal dominant trait with variable pene-trance and generally does not express itself clinically until the second or third decade of life.’ Several different names have been applied to hypertrophic cardiomyopathy (HCM), including a-symmetric septal hypertrophy (ASH), idiopathic hypertrophic subaortic stenosis (IHSS), hypertro-phic obstructive cardiomyopathy (HOCM), muscu