空间心室梯度是心脏纤维化的一种非侵入性,矢量心脏学相关的心脏纤维化
Hans F Stabenau1, Jason D Matos2, Daniel B Kramer1,3
1Division of Electrophysiology, Harvard-Thorndike Arrhythmia Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
概括
空间心室梯度 (SVG) 大小与心肌纤维化心脏MRI标志物相关. 高SVG大小与显著的扩散纤维化或透无关,这表明在心肌病中进行非侵入性评估的潜力.
科学领域:
- 心脏病学 心脏病学
- 医疗成像医学成像
- 电子生理学 电子生理学
背景情况:
- 心脏MRI (CMR) 标志物,如细胞外体积 (ECV) 和本地T1对于诊断和预测心肌病症至关重要.
- 非侵入性心电图 (ECG) 相关的心肌纤维化可能会改善患者的管理.
- 空间心室梯度 (SVG) 之间的关系,从心电图测量电异质的度量,和CMR衍生的纤维化并未得到充分理解.
研究的目的:
- 调查空间心室梯度 (SVG) 与心脏MRI (CMR) 间位纤维化 (ECV和本地T1) 测量之间的相关性.
- 评估SVG作为心肌纤维化在心肌病患者的非侵入性标记物的潜力.
主要方法:
- 对345名接受了ECG和CMR的患者进行了回顾性分析.
- 矢量心电图 (VCG) 由12导电心电图构建,以计算SVG矢量组件.
- 使用线性回归模型来评估SVG成分与CMR衍生的ECV和T1值之间的关联,并根据临床因素进行调整.
主要成果:
- SVG大小与ECV和本地T1 (p < 0.001) 呈反相关.
- 在多变量分析中,SVG大小仍然与ECV和T1独立相关,即使对年龄,性别,BMI和LVEF进行调整 (p <0.01).
- 粉样性心肌病患者表现出最异常的ECV和T1值,但没有一个SVG大小大于50mV·ms.
结论:
- SVG大小与CMR衍生的ECV和本地T1显著相关,表明其作为非侵入性标记物的潜力.
- 高SVG大小与扩散性纤维化或透的实质性负担无关,这表明存在复杂的关系.
- 需要进一步的研究来阐明SVG在评估心肌间歇性纤维化及其预后影响中的确切作用.
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