右心室表面面积与体积比对肺置换后心室重塑的影响
Nikhil Thatte1,2, Lynn A Sleeper3,4, Minmin Lu3
1Department of Cardiology, Boston Children's Hospital, 300 Longwood Ave, Boston, MA, 02115, USA. Nikhil.Thatte@cardio.chboston.org.
Pediatric cardiology
|June 22, 2023
概括
肺置换 (PVR) 在Fallot患者的修复四重症中显示,最佳的右心室 (RV) 重塑与特定的几何尺寸有关. 较高的缩面积与体积比 (SAVR) 和较短的RV长轴长度预测了更好的结果.
科学领域:
- 心脏病学 心脏病学
- 心脏外科手术 心脏外科手术
- 医疗成像医学成像
背景情况:
- 右心室 (RV) 改造是肺置换 (PVR) 后的关键目标,用于修复Fallot四重症.
- 传统的基于体积的参数不能完全预测PVR后的最佳RV反向改造.
研究的目的:
- 在PVR患者和对照中定义新的几何RV参数.
- 为了确定这些几何参数和PVR之后的RV改造之间的关联.
主要方法:
- 分析了60名PVR患者和20名健康对照者的心脏磁共振 (CMR) 数据.
- 评估RV的几何是使用诸如缩面积与体积比 (SAVR) 和曲率等参数进行的.
- 最佳的重塑是由特定的末端透气体积指数 (EDVi) 和喷射率 (EF) 标准来定义的.
主要成果:
- 与对照人群相比,PVR患者在基线缩SAVR和周围曲率显著降低.
- 较高的PVR前缩SAVR与较高的RV喷射率 (RVEF) 在PVR前后都相关.
- 多变量分析显示,较高的缩SAVR和较短的缩RV长轴长度独立地与最佳的PVR后重塑有关.
结论:
- 与健康个体相比,PVR患者表现出明显的RV几何形状,其特点是SAVR降低和曲变化.
- 在PVR前的缩SAVR是成功的RV反向改造PVR后的重要预测因素.
- 除了体积之外,新的几何参数对于预测Fallote幸存者的四分法中的PVR结果至关重要.
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