• A Sheikhzadeh, U Stierle, and K W Diederich.
• Herz. 1985 Apr 1; 10 (2): 59-71.

AbstractNoninvasive and invasive diagnostic procedures permit a differentiated insight into the hypertrophic cardiomyopathies. For a better understanding of the disease, classification according to morphologic and functional criteria was introduced. It has proven useful to subdivide hypertrophic obstructive cardiomyopathy into two types: idiopathic hypertrophic subaortic stenosis and midventricular obstruction; hypertrophic nonobstructive cardiomyopathies can be subdivided into two forms designated as asymmetrical septal hypertrophy and apical hypertrophy. Combined forms can also be recognized. With a high degree of accuracy, it is possible to differentiate between hypertrophic obstructive and hypertrophic nonobstructive cardiomyopathy by means of noninvasive procedures such as clinical examination, electrocardiography, mechanocardiography and, above all, echocardiography. Experience has shown that two-dimensional echocardiography, in particular, has assumed an especially important role, the value of which approaches that of cardiac catheterization. In this overview, emphasis is placed on the diagnostic peculiarities of idiopathic hypertrophic subaortic stenosis as well as the findings in midventricular obstruction and apical hypertrophy. In the past, only relatively little attention has been focused on the latter subgroups even though they can be diagnosed with a high degree of accuracy with noninvasive as well as invasive procedures.

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