像素变异得分:一个心声指数,以评估关回流的时间变化
Jonas Verbeke1, Victor Kamoen1, Marc De Buyzere1
1Department of Cardiology, University Hospital Ghent, Ghent University, Ghent, Belgium.
概括
使用新的像素变异得分 (PVS) 与心声学来评估腹流 (MR) 流量变化是可行的,并提供预后价值. 高的PVS可能表明不太严重的MR,指导临床决策.
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:
- 额头回流 (MR) 流量的时间变化使准确的分级复杂化.
- 目前用于评估MR流量变化的心声回声学方法复杂,缺乏临床相关性.
- 需要研究一种用于MR流量变化评估的新型无维指数.
研究的目的:
- 评估MR流量变化的可行性和临床意义,使用一种新的心声回声指数.
- 为了确定这个指数是否与米特拉反患者的结果有关.
- 评估像素变化得分 (PVS) 在区分MR类型和预测结果中的实用性.
主要方法:
- 综合性心声扫描对244名患有 mitrale valve prolapse (MVP) 的患者和396名具有功能性MR (FMR) 的患者进行.
- 分析了MR连续波多普勒封面,以计算像素变化得分 (PVS).
- 评估了MR的严重程度,心脏左侧的尺寸,喷射率和肺动脉压力.
主要成果:
- 在FMR中,PVS比MVP患者的FMR更低,并且与MR严重程度更差和不良心声学参数相关.
- MVP患者的PVS与术后左心室逆向重塑相关,并且重新分类的患者高估了MR.
- PVS证明了超出已建立的临床和心声预测指标的增量预后价值.
结论:
- 通过连续波多普勒信号分析,可以使用心声回声学可靠地评估MR流的时间变化.
- 高的PVS可能会促使推迟单MR分级,并暗示不太严重的MR.
- 该PVS提供了一个可行的和临床上有意义的MR评估方法,具有预后影响.
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