| Japanese |
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| Title | 組織ドプラ法による心室中隔壁の心筋収縮速度は壁厚増加率を反映する |
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| Subtitle | 原著 |
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| Authors | 比企美加, 渡部功三, 新見能成, 森田茂穂 |
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| Authors(kana) | |
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| Organization | 帝京大学麻酔科学講座 |
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| Journal | 循環制御 |
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| Volume | 25 |
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| Number | 4 |
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| Page | 382-385 |
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| Year/Month | 2004/12 |
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| Article | 原著 |
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| Publisher | 日本循環制御医学会 |
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| Abstract | 組織ドプラ法を用いた心筋収縮速度の測定は, 心エコーによる心筋虚血の客観的定量的診断方法として注目されている. 今回, 冠動脈バイパス手術中の心室中隔の壁厚増加率と組織ドプラ法による最大収縮速度および最大拡張速度の関係を調べた. 壁厚増加率が高いほど最大収縮速度は速い傾向にあったが, 最大拡張速度にははっきりとした関係を認めなかった. また, 壁厚増加率が2段階以上低下したとき, 最大収縮速度は有意に低下し, 反対に上昇したときは有意に上昇した. 心室中隔の長軸方向における最大収縮速度は, 壁厚増加率と関係することが示された. |
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| Practice | 基礎医学・関連科学 |
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| Keywords | tissue Doppler imaging, myocardial velocity, coronary artery bypass grafting, wall motion score |
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| English |
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| Title | Myocardial Systolic Velocity at the Septum Reflects the Extent of Myocardial Wall Thickening in Patients Undergoing Coronary Artery Bypass Grafting |
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| Subtitle | |
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| Authors | Mika Hiki, Kozo Watanabe, Yoshinari Niimi, Shigeho Morita |
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| Authors(kana) | |
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| Organization | Department of Anesthesiology, Teikyo University |
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| Journal | Circulation Control |
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| Volume | 25 |
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| Number | 4 |
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| Page | 382-385 |
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| Year/Month | 2004/12 |
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| Article | Original article |
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| Publisher | Japan Society of Circulation Control |
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| Abstract | Tissue Doppler imaging is a new technique that is based on color Doppler imaging principles and enables the quantification of intramural myocardial velocities by the detection of consecutive phase shifts of the ultrasound signal reflected from the contracting myocardium. We evaluated a correlation between myocardial velocity and the extent of wall motion thickening. In 31 patients undergoing coronary artery bypass grafting, the myocardial peak systolic velocity, peak diastolic velocity, and wall motion thickening were assessed in the basal and mid septum during surgery. A correlation was observed between myocardial peak systolic velocity and the extent of wall motion thickening. However, no significant correlation was observed between myocardial diastolic velocity and wall motion thickening. Myocardial systolic velocity which was derived from tissue Doppler imaging appears to be useful for quantification of regional left ventricular function. |
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| Practice | Basic medicine |
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| Keywords | tissue Doppler imaging, myocardial velocity, coronary artery bypass grafting, wall motion score |
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