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对于矛盾的低流量/低梯度大动脉狭窄症的速度比的诊断效用

Shun Nagai¹, Takayoshi Toba¹, Yu Izawa¹

¹Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.

Journal of echocardiography

|August 31, 2024

概括

速度比 (VR) 低于0.25是诊断严重悖论性低流/低梯度大动脉狭窄症 (PLFLG AS) 的可靠指标. 这种简单的心声回声测量在临床实践中有助于识别严重的PLFLG AS.

科学领域:

心脏病学心脏病学
医疗成像医学成像
心声回声图 (Echocardiography) 是一种心声回声图.

背景情况:

心脏计算机断层扫描 (CT) 化评分对于诊断悖论性低流/低梯度 (PLFLG) 大动脉狭窄 (AS) 是必不可少的.
心声学指南将严重的AS定义为速度比 (VR) <0.25,但其在PLFLG AS中的实用性尚未得到充分证实.
这项研究调查了PLFLG AS.患者VR的诊断价值.

研究的目的:

评估速度比 (VR) 的实用性,以诊断患有悖论性低流/低梯度 (PLFLG) AS AS的患者的严重大动脉狭窄 (AS).
为了确定用于识别严重PLFLGAS的最佳VR切割值,使用心脏CT衍生的分数作为参考标准.

主要方法:

对58名被诊断患有PLFLG AS.的患者进行了回顾性分析.
根据心脏CT得出的分数来确定AS的严重程度.
测量了心声图速率 (VR),并与CT发现进行了比较.

主要成果:

28名患者 (48.3%) 通过CT诊断出严重的AS.
在这些患者中,82.1%的VR<0.25正确识别了严重AS.
接收器运行特征曲线分析确定VR为0.25作为最佳切线 (AUC=0.870,P<0.001),具有高灵敏度 (82.1%) 和特异性 (86.7%). 与VR和CT结果一致的患者表现出心房的患病率增加和更高的性尿素水平.

结论:

速度比 (VR) <0.25是一个简单而有效的工具,用于诊断严重的悖论性低流/低梯度大动脉狭窄 (PLFLG AS).
这些发现支持VR在治疗PLFLG AS患者的常规临床使用.
虚拟现实测量为PLFLGAS诊断的常规实践提供了有价值的临床影响.

关键词:

心脏计算机断层扫描是指心脏的计算机断层扫描.心声回声图 (Echocardiography) 是一种心声回声图.低流量/低梯度的大动脉狭窄症速度比率的速度比率.

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