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在患有急性下心肌梗塞的患者中,通过封闭式scintiphotography检测到的右室功能障碍
Circulation
|August 1, 1975
概括
右心室功能障碍在急性心肌梗塞中很常见,特别是在劣质病例中. 这项研究使用心脏血液池扫描来评估患者和志愿者的右心室面积/左心室面积比例.
科学领域:
- 心脏病学 心脏病学
- 核心脏病学 核心脏病学
- 心脏成像 - - 心脏成像
背景情况:
- 急性心肌梗塞 (AMI) 可以导致严重的心脏功能障碍.
- 评估右心室 (RV) 参与对于AMI的预后至关重要.
- 门式心脏血池扫描提供了一种评估心室大小和功能的方法.
研究的目的:
- 调查右心室面积与左心室面积 (RVA/LVA) 的比例在评估急性心肌梗塞中心室变化的有用性.
- 根据心室几何形状,区分前部和下部心肌梗塞.
- 探索RV功能障碍在患有和没有心脏性休克的患者中.
主要方法:
- 对27名AMI患者 (没有心脏性休克) 和10名健康志愿者进行了心脏血池扫描.
- 末端透气右心室面积与左心室面积 (RVA/LVA) 的比率是从左前斜视图计算的.
- 还研究了一组6名心脏性休克患者 (前3次,下3次AMI).
主要成果:
- 正常志愿者的RVA/LVA比率为1.11 +/- 0.06.
- 前部AMI患者显示RVA/LVA比率降低 (0.75 +/- 0.12),这是由于左心室扩大.
- 患有劣质AMI的患者由于两个心室的扩大而增加了RVA/LVA比率 (1.12 +/- 0.23),表明潜在的RV参与.
结论:
- RVA/LVA比率有效地区分了前心肌梗塞和下心肌梗塞中的心室变化.
- 低心肌梗塞与右心室扩张和功能障碍的发病率较高有关.
- 在心脏性休克中,前部AMI与RVA/LVA降低相关,而下部AMI显示显著增加,表明显著的RV功能障碍.
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