Cardiac atrophy can be divided into three categories: (1) centripetal-the size of the heart cavity decreases, but the thickness of the ventricular wall remains unchanged; (2) Aneurysm type-the ventricular wall is obviously thinner and the cardiac cavity is dilated; (3) Simple type-the ventricular wall becomes thinner, but the heart volume does not change much. 184 1 year, Bouillaud made a detailed clinical study according to this classification. He pointed out that it is wrong to use the wall thickness as an indicator of atrophy, especially in centripetal groups. In this case, the wall thickness of the ventricle may be normal or thicker than that of the normal heart. The weight of the heart is only 1/3 ~ 1/4 of the normal heart. He cited 7 cases of heart atrophy, with an average heart weight of 65438 0.75 g, emphasizing that the degree of heart weight and volume reduction is not consistent. Clinically, it has the following characteristics: the heart sounds are far away, the beating in the precordial area is weakened, the voiced area is narrowed, and the pulse is narrow. Local factors can cause atrophy, such as pericardium.

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