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英文誌(2004-)

Journal of Medical Ultrasonics

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1990 - Vol.17

Vol.17 No.06

Case Report(症例報告)

(0696 - 0702)

成人三心房心の1例:カラードプラ心エコー図による副室から真の左房への流入血流シグナルの観察

A Case of Cor Triatriatum in an Adult: Detection of Inflow Signals Passing from Accessory Chamber into Left Atrium Using Color Doppler Echocardiogaraphy

斎藤 誠1, 小竹 寛1, 長谷川 純一1, 山崎 純一1, 都田 裕之1, 真柴 裕人1, 谷口 巖2, 佐々木 成一朗2, 森 透2

Makoto SAITOH1, Hiroshi KOTAKE1, Jun-ichi HASEGAWA1, Jun-ichi YAMASAKI1, Hiroyuki MIYAKODA1, Hiroto MASHIBA1, Iwao TANIGUCHI2, Sei-ichiro SASAKI2, Toru MORI2

1鳥取大学医学部第1内科, 2鳥取大学医学部第2外科

1The First Department of Iiternal Medicine, Tottori University School of Medicine, 2The Second Department of Surgery, Tottori University School of Medicine

キーワード : Cor triatrum, Color Doppler echocardiography, Transesophageal two-dimensional echocardiography, Inflow signal

A 45-year-old female with cor triatriatum was reported with special reference to the inflow signals passing from the accessory chamber to the left atrium using color Doppler echocardiography. Transthoracic and transesophageal 2-dimensional echocardiography (2-D echo) revealed a bright, echodense septum between the inter-atrial septum and the left atrial wall. However, a fenestration within this abnormal septum could not be visualized by 2-D echo. Transthoracic color Doppler echocardiography showed only the one inflow signal in short axis view, but transesophageal color Doppler echocardiography showed the two inflow signals. During surgery we found a spiral-shaped septum originating from the posterior wall of the left atrium and no fenestration within the septum. A fenestration of about 1 cm in diameter was composed of the abnormal septum and the posterior wall of the left atrium. The three inflow signals detected by color Doppler echocardiography were believed to show the abnormal intra-atrial hemodynamic patterns caused by the complex structure of the left atrium. Transesophageal 2-D echo color Doppler echocardiography proved to be useful in detecting the complex structures and the hemodynamic patterns in our case of cor triatriatum.