右心室压力过载对心肌硬度的影响,通过自然波成像评估
Maelys Venet1, Aimen Malik2, Samantha Gold2
1Department of Cardiology, The Labatt Family Heart Centre, The Hospital for Sick Children, Toronto, Ontario, Canada; Bordeaux University Hospital, Department of Pediatric and Adult Congenital Cardiology, Pessac, France; Electrophysiology and Heart Modeling Institute, Institut Hospital-Universitaire Liryc, Fondation Bordeaux Université, Bordeaux, France.
JACC. Cardiovascular imaging
|August 23, 2024
概括
自然波速 (NWV) 随着右心室 (RV) 压力过载而增加,反映了心肌硬度. 这种超快的超声波技术显示出对评估RV功能在诸如肺高血压等疾病中的前景.
科学领域:
- 心脏病学 心脏病学
- 生物医学工程 生物医学工程
- 超声波成像 超声波成像
背景情况:
- 右心室 (RV) 血液动力学性能对于RV压力过载的预后至关重要.
- 通过超快超声波测量的自然波速 (NWV) 是心肌硬化的新型替代品.
研究的目的:
- 在动物模型和患有RV压力过载的儿童中评估RV NWV.
- 为了将RV NWV与已确定的血液动力学参数相关联.
主要方法:
- 动物模型接受了肺动脉带带或苏根缺氧,进行NWV,心声回声和血液动力学评估.
- 在三管和肺关闭 (TVC和PVC) 后测量了NWV.
- 患有RV压力过载的儿科患者和对照人进行了类似的评估.
主要成果:
- 与对照组相比,RV压力过载模型和儿童的NWV显著更高.
- 在TVC之后的NWV与RV心和心功能参数 (dP/dtmax,Ees) 相对应.
- 在PVC之后的NWV与儿童的透静参数和RV腔度相关.
结论:
- RV压力过载导致心肌硬度在早期心缩和早期心缩时增加.
- 早期心性NWV可能表明收缩性,而早期心性NWV可能反映心功能.
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