全球纵向应变是接受重症监护的新生儿左心室表现的信息指数
Enrico Petoello1, Alice Iride Flore1, Silvia Nogara1
1Neonatal Intensive Care Unit, University and Hospital Trust of Verona, P.le A. Stefani 1, 37126, Verona, Italy.
Scientific reports
|April 17, 2024
概括
全球纵向应变 (GLS) 在评估新生儿左心室功能方面提供了优越的准确性,与传统的心声回声学方法相比. 这种先进的技术显示出更大的诊断能力,对于严重疾病的新生儿的未补偿性休克.
科学领域:
- 新生儿心脏病学 新生儿心脏病学
- 心声回声扫描 (Echocardiography) 是一种心声回声扫描.
- 儿科重症监护 儿科重症监护
背景情况:
- 准确评估左心室功能对于新生儿在新生儿重症监护室 (NICU) 的新生儿至关重要.
- 传统的回声心脏学参数,如缩短分数 (SF),射出分数 (EF) 和S'在反映真正的心脏表现方面存在局限性.
- 全球纵向应变 (GLS) 是一种评估心肌变形的新兴技术.
研究的目的:
- 为了比较全球纵向应变 (GLS) 的准确性和一致性,与新生儿的传统心声谱测量进行比较.
- 评估GLS在诊断严重病重的新生儿中未补偿性休克时的诊断性能.
- 为了确定GLS与按体重 (iSV) 索引的中风体积的相关性.
主要方法:
- 对 155 名新生儿 (334 项研究) 的现实心声图进行了回顾性审查,这些新生儿被录入新生儿重症监护室.
- 从存储的心声回声图像下线计算GLS.
- 将GLS与SF,EF和S'进行比较,使用回归分析与iSV和ROC曲线分析进行关联,以诊断无补偿冲击. 科恩的卡帕被用于协议评估.
主要成果:
- GLS与iSV有很强的关联 (R2=0.633,p<0.001),这解释了多变量模型 (73%) 中显著部分的差异.
- 与EF (AUC=0.757),S' (AUC=0.737) 和SF (AUC=0.606) 相比,GLS显示出对未补偿性休克的诊断能力优越 (AUC=0.956).
- GLS与EF (κ=0.500) 呈现中度一致,与S' (κ=0.260) 和SF (κ=0.242) 呈现有限一致.
结论:
- 全球纵向应变 (GLS) 是对新生儿左心室表现的更有信息的指标,而不是传统的心声回声学参数.
- GLS在诊断重病新生儿未补偿性休克时表现出卓越的准确性.
- 这些发现支持在床边扩大GLS的使用,以进行全面的新生儿心脏评估.
更多相关视频
相关概念视频
Normal Strain under Axial Loading
Normal strain under axial loading is an important concept in the field of mechanics of materials. Axial loading implies the application of a force along the axis of a material, like a column or bar. This force can either compress or stretch the material. In the context of axial loading, normal strain is the deformation experienced by the material in the direction of the loading force. It's calculated as the change in length divided by the original length of the material. This unitless ratio...
Measurements of Strain
Strain quantifies the deformation of a material under force, typically measured as normal strain, which represents the change in length when compared with the original length. Electrical strain gauges are used for enhanced accuracy. These devices consist of a conductive wire mounted on a paper backing that adheres to the material's surface. These gauges operate on the piezoresistive effect, where the wire's electrical resistance changes in response to mechanical deformation. The strain gauge...


