THE STUDY OF MORPHOLOGY OF ATRIOVENTRICULAR VALVES OF THE HEART IN CHINESE
- VernacularTitle:中国人心脏房室瓣形态学的研究
- Author:
Ji LI
- Publication Type:Journal Article
- From:
Acta Anatomica Sinica
1954;0(02):-
- CountryChina
- Language:Chinese
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Abstract:
The atrio-ventricular valves of the normal heart in 200 Chinese cadavers of different ages were studied. The right atrioventricular valves were classified into three types and the left were classified into two types, according to the number of the main cusps. It was found that percentage of the second type (53.5%) of the right atrio-ventricular valves was higher than that of the first type (43.5%) and the first type (83.0%) of the left atrio-ventricular valves is in the majority, while the second type (17.0%) represents only a small percentage.An accessory cusp is situated between two main cusps. The accessory cusp was found in the right atrio-ventricular valves of 132 cases (66.0%), the majority of which had only one accessory cusp (95 cases. 72.0%), and among them there were 65 cases (37.4%) in which antero-medial accessory cusps were present. The accessory cusps were found in the left atrio-ventricular valves of 103 cases (51.5%), most of them also had only one cusp (92 cases 89.3%) and among them there were 71 cases (62.3) in which postero-medial accessory cusps were present.If the total number of the main and the accessory cusps was considered, in the right ventriculus, four cusps were found in 40.5% of the cases, five in 29.0%, three in 19.5%, six in 9.0%, two in 1.5%, seven in 0.5%; while in the left ventriculus, three cusps were found in 51.5% of the cases, two in 37.0%, four in 11.0% and five in 0.5%.The size of the valves was measured. In the right ventriculus the postero-medial valve is the broadest (40.1 mm), the postero-lateral valve is the highest (24.5 mm). In the left ventriculus the postero-lateral valve is the broadest (36.9 mm), the antero-medial valve is the hightest (20.8 mm). The associated valves are usually larger than the other common main valves, the diameters of which are larger than that of the accessory valves. The perimeter of left artrio-ventricular ring is 79.69 mm and the right is 97.79 mm.
