概括
在心肌梗塞之后,心肌梗塞和非心肌梗塞的心脏分段都会重建. 这项研究显示,非心脏病发作的部分中心脏病发作的扩张和体积过载过度缩,表明心脏病发作后的左心室整体重塑.
科学领域:
- 心脏病学 心脏病学
- 心血管研究研究心血管研究
- 医疗成像医学成像
背景情况:
- 心肌梗塞 (MI) 后的左心室重塑是预后的一个关键决定因素.
- 虽然心脏病发作扩张得到了认可,但非心脏病发作细分的行为仍然不太了解.
研究的目的:
- 评估急性横向性心肌梗塞后早期康复阶段中心脏病发作和非心脏病发作两部分的左心室几何变化.
- 为了研究心脏病扩张和非心脏病发作的部分的变化之间的关系.
主要方法:
- 左心室血管造影和M模式回声心脏造影在入院时进行,并在2周后在30名第一次急性转移性心脏病发作的患者中进行.
- 用内心周围长度的连续测量来量化心脏梗塞和非心脏梗塞部分的区域变化.
- 血液动力学参数也被测定为顺序.
主要成果:
- 在心脏病发作后2周观察到左心室末端透缩体积指数 (LVEDV) 和左心室末端透缩体积指数 (LVESV) 的显著增加.
- 在LVEDV的增加与 akinetic/dyskinetic分段的初始程度相关.
- 无论是心脏病发作 (13%) 还是非心脏病发作 (19%) 段都显示内心周围长度增加,这表明分别有扩张和缩.
结论:
- 在心脏病发作后的早期康复阶段涉及整个左心室的重塑.
- 这种重塑包括受损部分的心脏病扩张和可行的,非心脏病发作的部分的体积过载缩.
- 这些发现突显了心脏适应后MI的动态性质.
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