Usefulness of echocardiographic tissue synchronization imaging to predict acute response to cardiac resynchronization therapy
Usefulness of echocardiographic tissue synchronization imaging to predict acute response to cardiac resynchronization therapy
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DOI：
10.1016/j.amjcard.2004.01.054
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发表时间：
2004-05-01
影响因子：
2.8
通讯作者：
Schwartzman, D
中科院分区：
文献类型：
--
作者：
Gorcsan, J;Kanzaki, H;Schwartzman, D
超声心动图组织同步成像（TSI）由颜色编码的组织峰值时间多普勒速度组成-这项对29名接受心脏再同步治疗（CRT）的患者进行的研究表明，TSI对侧室壁的基线说话时间速度差异较大15名患者的血流动力学得到了急性改善。在心尖长轴切面上，从前间隔到后壁的延迟大于或等于65 ms，预测急性反应的敏感性为87%，特异性为100%。虽然没有急性改善的亚组后来收缩末期容积下降，表明急性反应低估了长期影响，但TSI有可能帮助指导CRT。(C)2004年，Excerpta Medica，Inc.
Echocardiographic tissue synchronization imaging (TSI) consists of color-coding time-to-peak tissue Doppler velocities-This study of 29 patients who underwent cardiac resynchronization therapy (CRT) demonstrated that differences in baseline time-to-speak velocities of opposing ventricular walls by TSI were greater in 15 patients, with an acute hemodynamic improvement. A greater than or equal to65 ms delay from the anterior septum to the posterior wall using the apical long-axis view had 87% sensitivity and 100% specificity for predicting an acute response. Although a subgroup without acute improvement had later decreases in end-systolic volume, suggesting that acute response underestimates long-term effects, TSI has potential to assist in guiding CRT. (C) 2004 by Excerpta Medica, Inc.