Schenk K E, Heinze G
Recent Adv Stud Cardiac Struct Metab. 1975;10:617-24.
The mode and extent of the regressions of heart valves, valvular rings, and tendon chords, as well as the size of atria and ventricles in 316 hearts of different age groups (macroscopically normal at autopsy), were studied. With increasing age, the valves showed marked thickening and loss of elasticity. Deposition of lipoids and calcification occur to a variable extent in the valvular tissue and rings; Valve size shows a change of minor degree, but tendon chords and papillary muscles shorten in old age. The diameters of the atria, mitral, tricuspid, pulmonary, and aortic rings increase continuously up to the 9th decade of life. The width and length of the ventricles show minor alterations in size. In old age, heart weight increases.
对316颗不同年龄组（尸检时宏观正常）心脏的心脏瓣膜、瓣膜环和腱索的退化方式及程度，以及心房和心室大小进行了研究。随着年龄增长，瓣膜明显增厚且弹性丧失。脂质沉积和钙化在瓣膜组织和瓣膜环中不同程度地发生；瓣膜大小有轻微变化，但腱索和乳头肌在老年时会缩短。心房、二尖瓣、三尖瓣、肺动脉和主动脉环的直径在生命的第九个十年前持续增加。心室的宽度和长度在大小上有轻微改变。在老年时，心脏重量增加。
