1. The pathology of aortic valve was bicuspid valve (19 cases, 59%).

2. Valvar stenosis is most frequently associated with a bicuspid valve or other cardiovascular malformation.

3. Another 10 patients with rheumatic bicuspid valve disease combined by HF, who were hospitalized before(RHF group 2), were only performed bicuspid valve replacement.

4. The main valve pathological changes were pure aorta petal diseases (54.2%), followed by combined diseases of bicuspid valve and aorta petal (33.1%).

5. From the left atrium the blood passes through the bicuspid valve into the right ventricle.

6. From the left atrium the blood passes through the bicuspid valve into the left ventricle.