左心室外流通道的位置 测量中风体积估计用心声扫描
Brian Cowie1, Leah Wright2, Ben Costello2
1Department of Anaesthesia, St. Vincent's Hospital, Melbourne, Vic, Australia; Sports Cardiology, Baker Heart and Diabetes Institute, Melbourne, Vic, Australia; Department of Critical Care, University of Melbourne, Vic, Australia.
Heart, lung & circulation
|February 4, 2025
概括
使用多普勒测量左心室外流通道 (LVOT) 冲击体积 (SV) 的最佳位置是距离大动脉环3毫米,与心脏磁共振成像 (CMR) 黄金标准密切匹配. 更远的测量结果高估了SV.
科学领域:
- 心血管成像 - 心血管成像
- 心声回声扫描 (Echocardiography) 是一种心声回声扫描.
- 心脏生理学 心脏生理学
背景情况:
- 通过多普勒回声心脏成像测量左心室外流通道 (LVOT) 脉冲体积 (SV) 的确切位置仍在争论中.
- 目前的指导方针建议在5-10毫米的前动脉环内进行测量.
研究的目的:
- 确定多普勒LVOT SV测量站点,该站点与金标准心磁共振成像 (CMR) 达成最高一致.
主要方法:
- 一项回顾性观察性研究将多普勒LVOT SV测量与181名健康参与者的CMR SV进行了比较.
- 多普勒测量是在环状,以及3毫米,6毫米和9毫米的距离.
主要成果:
- LVOT面积逐渐增加,从圆环到9毫米远.
- 在距离圆环3毫米处测量的多普勒SV显示与CMRSV最接近的一致性 (平均偏差为0.40%).
- 0毫米和6毫米的测量平均偏差分别为11%和-16.48%,而9毫米导致了显著的高估值 (-43.16%).
结论:
- 在环形的10毫米范围内进行LVOT SV测量是不可互换的.
- 在距离圆环的3毫米处进行测量,可提供CMR SV.最准确的近似值.
- 在环状或6毫米的测量在CMR SV的17%以内,但在9毫米的测量导致了大量的高估.
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