酒井 吉郎, 中村 憲司, 藤田 洋子, 中川 真澄, 細田 瑳一

Kichiro SAKAI, Kenji NAKAMURA, Yoko FUJITA, Masumi NAKAGAWA, Saichi HOSODA

東京女子医科大学日本心臓血圧研究所循環器内科

Department of Cardiology, The Heart Institute of Japan, Tokyo Women's Medical College

キーワード : transesophageal echocardiography, Mitral regurgitation, SJM

We evaluated mitral SJM prosthetic leakage, which seemed to be clinically normal, by transesophageal echocardiography (TEE) and also by transthoracic echocardiography (TTE) and cardiac catheterization. The study group consisted of 27 patients (pts). Based on the postoperative period (POP) , these pts were divided into 2 groups: Group A (POP In all cases, TEE showed holosystolic regurgitant signals, which was convergent flow into LA. The MRA was 1.1-9.9 cm² (mean 4.2 cm²) and was not significantly affected by prosthetic size nor by LA size. The MRA of pts in Group B was significantly larger than that of pts in Group A (6.4 cm² vs 3.2 cm² p2 (mean 0.82 cm²). The correlation between MRA by TEE and that by TTE was not significant. The LVG showed mitral regurgitation with Sellers 1° in all pts.
In conclusion, mitral SJM prosthesis with clinically normal function had mild leakage, which was clearly detected by the TEE. The MRA varied in size for each case, and was larger in the pts with long postoperative periods. This MRA varience could not be evaluated by other examination methods.