Yoshida S, Iimura O, Hirata K, Fukuda M
Department of Ultrasound and Medical Diagnosis, Sapporo Medical College.
J Cardiol Suppl. 1991;26:69-74.
Transesophageal echocardiography with high resolution (TEE; 5 MHz, convex type probe) revealed ruptured chordae tendinae of the mitral valve (RCT) in seven patients. However transthoracic echocardiography (TTE) was diagnostic only in two patients. These all seven patients had mitral valve prolapse and mitral regurgitation documentated by TTE. Six of seven patients were 59 years or older, and four patients had only mild symptoms. TEE showed the systolic appearance of an edge echo, suggesting an edge of ruptured chordae tendineae within the left atrium. These results show that TEE is a useful method for detecting RCT of the mitral valve, especially in the aged patients with MVP and mitral regurgitation. It is because of the availability of high resolution and nearfield in TEE.
高分辨率经食管超声心动图（TEE；5兆赫，凸阵探头）显示7例患者存在二尖瓣腱索断裂（RCT）。然而，经胸超声心动图（TTE）仅在2例患者中具有诊断价值。所有这7例患者均经TTE记录存在二尖瓣脱垂和二尖瓣反流。7例患者中有6例年龄在59岁及以上，4例仅有轻微症状。TEE显示收缩期边缘回声，提示左心房内存在断裂腱索的边缘。这些结果表明，TEE是检测二尖瓣RCT的一种有用方法，尤其是对于患有MVP和二尖瓣反流的老年患者。这是因为TEE具有高分辨率和近场优势。
