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北京协和方全等研究:一种超声手段诊断心肌淀粉样变性左室受累更敏感

2018-02-06 岱西 中国循环杂志

北京协和医院方全等学者研究发现,超声心动图二维斑点追踪成像(2D-STE)和心脏核磁共振(CMR)钆延迟增强对诊断心肌淀粉样变性左心室受累有很好的一致性,而前者或更敏感。


北京协和医院方全等学者研究发现,超声心动图二维斑点追踪成像(2D-STE)和心脏核磁共振(CMR)钆延迟增强对诊断心肌淀粉样变性左心室受累有很好的一致性,而前者或更敏感。
 
CMR钆延迟增强显像在心肌淀粉样变性中具有很高的临床应用价值,有研究显示显像阳性诊断心肌淀粉样变性的敏感性、特异性、阳性预测值和阴性预测值分别为80%、94%、92%和85%。
 
而系列临床研究证实,2D-STE 技术可通过观察局部心肌的运动变化来诊断系统性淀粉样变患者是否存在心肌受累。
 
这项研究共回顾性比较分析了10 例心肌淀粉样变性CMR钆延迟显像与2D-STE测定的心室收缩期长轴峰值应变。
 
结果显示,10 例患者中CMR 均有心室延迟强化,而2D-STE 显示9 例存在心室收缩期长轴峰值应变减低。两种技术对心肌淀粉样变性左心室受累的诊断一致性为90%。
 
4 例患者同时存在双心室的应变异常与CMR 延迟强化,4 例患者CMR未提示右心室受累但右心室收缩期长轴峰值应变已出现异常,1例CMR提示室间隔延迟强化,左、右心室收缩期长轴峰值应变均下降。
 
研究者指出,该研究为回顾性观察研究,病例数较少,需要进一步扩大样本对不同程度淀粉样变心肌病受累患者进行前瞻性研究。
 

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