Our Experience of Surgical Aortic Reconstruction in Patient with Bicuspid Aortic Valve in Japan

Abstract

Objectives: We present the classification of bicuspid aortic valve (BAV) and morphometric analysis of the ascending aorta in patients with BAV.

Methods: From 2003 to 2018, 102 patients underwent aortic valve replacement for BAV in our institution. Surgical treatment for aorta reconstruction was performed in 39 patients. All patients were evaluated by Sievers classification of the BAV and Fazel Cluster classification of the aortic form.

Results: Sievers classification of the BAV showed 8 patients for type 0, 30 cases for type 1, and 1 case for type 2. Additionally, type 0 subtype included one patient of ap-type and seven patients of lat-type. In type 1, there are 18 patients as LR fusion type, 9 patients as RN fusion type, and 3 patients as LN fusion type. The mean diameter of the ascending aorta of 39 BAV patients who underwent aortic surgery was 47.8 ± 6.1 mm. Fazel Cluster classification showed eight patients in type 1, 28 patients in type 2 and 3, and three patients in type 4.

Conclusion: The frequency of Sievers classification was the same as that reported previously. All BAV types may be associated with a risk of the enlargement of ascending and arch aorta.