北京世纪坛医院学者称,新超声技术证实介入治疗CTO可改善心功能

2017-02-28 朱朱 中国循环杂志

北京世纪坛医院王萍等在本刊发表的一项研究提示,对于接受经皮冠状动脉介入治疗(PCI)的冠状动脉慢性完全性闭塞(CTO)患者,利用一种叫做二维斑点追踪显像(2D-STI)的新型超声诊断技术可以早期、定量、敏感地评价左心室功能的动态变化,为这类患者PCI的疗效判定和预后判定提供了一种无创新方法。 据介绍,2D-STI技术是近年发展起来的一项能从多个方向评价左心室心肌功能的新方法。在二维图像的



北京世纪坛医院王萍等在本刊发表的一项研究提示,对于接受经皮冠状动脉介入治疗(PCI)的冠状动脉慢性完全性闭塞(CTO)患者,利用一种叫做二维斑点追踪显像(2D-STI)的新型超声诊断技术可以早期、定量、敏感地评价左心室功能的动态变化,为这类患者PCI的疗效判定和预后判定提供了一种无创新方法。
 
据介绍,2D-STI技术是近年发展起来的一项能从多个方向评价左心室心肌功能的新方法。在二维图像的基础上,通过逐帧追踪心肌回声斑点的运动轨迹,自动计算出斑点的应变参数,无角度依赖性,时间分辨高,重复性好,可多角度(轴向、切向和环向)评价心肌运动,能够很好的评价心肌整体及局部功能。
 
这项研究纳入23例CTO患者,分别于PCI前,术后1 天、3 个月和6 个月行超声心动图检查,测量左心室射血分数,同时应用2D-STI 获得左心室整体纵向应变值(GLS)。
 
结果显示:术前患者的左心室射血分数均值为59.29% ,术后3个月和6个月时患者的左心室射血分数均值均明显提高,分别为60.00%和61.37%。术前患者的平均GLS为-12.77%,术后1天、3个月和6个月时平均 GLS依次为-13.23%、-15.67% 和-16.97%,均较术前明显降低。这说明,PCI能有效改善CTO患者的左心功能。
 
研究者指出,PCI不仅可挽救CTO患者可能存在的存活心肌,而且还有为其他血管提供侧支循环的潜在可能,以预防或减轻其他冠状动脉病变时发生的心肌缺血,提高左心室射血分数,改善缺血心肌的室壁运动。但这个过程需要多长时间能显现出来缺乏相应研究。
 
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    2017-11-25 gao_jian4217
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    2017-03-25 jyzxjiangqin

    新超声技术可改善心功能。

    0

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