在PAH中左心室不足填充:适应性到不适应性过渡的潜在指标
Jiajun Guo1, Jiaqi Wang1, Lili Wang2
1Department of Cardiology, West China Hospital Sichuan University Chengdu Sichuan China.
Pulmonary circulation
|December 4, 2023
概括
在肺动脉高血压 (PAH) 患者中,左心室填充不足预示着不良结果. 这种成像标志物可以识别PAH的不适应性变化和更高的死亡风险,有助于临床决策.
科学领域:
- 心脏病学 心脏病学
- 医疗成像医学成像
- 肺高血压研究 肺高血压研究
背景情况:
- 肺动脉高血压 (PAH) 是一种严重的疾病,治疗选择有限.
- 右心室 (RV) 经历了显著的变化,以应对PAH的增加后负荷.
- 心室的相互依赖在PAH病理生理学中起着至关重要的作用.
研究的目的:
- 调查左心室 (LV) 填充不足是否是PAH中不适应性变化的成像标志物.
- 确定LV填充不足和PAH患者的临床结果之间的关联.
- 探索LV填充不足作为死亡率和心力衰竭再入院的预测因素.
主要方法:
- 对190名接受心脏MRI和右心脏导管治疗的PAH患者进行前性研究.
- 根据LV和RV的质量/体积比率 (M/V) 分类的患者来定义LV填充不足.
- 主要终点:全因死亡率;复合终点:死亡率和心力衰竭再入院.
主要成果:
- 与较高的NT-proBNP,增加的RV质量,更大的RV,更小的LV和减少的RV喷射率相关的LV不足填充.
- 患有LV填充不足的患者死亡风险增加了2.7倍.
- LV M/V 是所有原因死亡率的独立预测因素 (HR 1.271).
结论:
- 左心室填充不足是PAH中不良临床结果的独立预测因素.
- LV 填充不足作为一种有价值的成像标记,用于识别不适应的 RV 变化.
- 识别LV填充不足可以帮助分层风险和指导PAH患者的管理.
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