右心房的解剖学,组织学和机械特征:对无心房心脏起器植入的含义
Matthew O'Connor1,2, Umberto Barbero3,4, Daniel B Kramer5
1Department of Electrophysiology, Royal Brompton and Harefield Hospitals, Guy's and St Thomas' NHS Foundation Trust, London SW3 6NP, UK.
概括
右心房附属体底部是无心脏起器植入的最佳位置,提供厚厚组织的平衡和最小的碰撞风险. 其他地点包括RAA顶部和侧壁.
科学领域:
- 心血管解剖学的心血管解剖学
- 医疗器械工程 医疗器械工程
- 心脏电生理学心脏电生理学
背景情况:
- 无心脏起器 (LPs) 为输血系统提供了替代方案,可能减少衰竭和感染风险.
- 研究心房LP需要了解最佳的植入部位,以确保安全性和有效性.
- 目前的知识缺乏关于心房LP安置最安全的解剖位置的明确指导.
研究的目的:
- 确定心房无心脏起器 (LP) 植入人右心房 (RA) 的最佳和最安全的解剖位置.
- 用粗解剖学,心脏MRI和计算机模拟来评估RA解剖学和相邻结构.
- 评估潜在的植入部位的机械设备相互作用和解剖学适用性.
主要方法:
- 对45个人类心脏进行RA壁厚度和解剖关系分析.
- 在100个心脏MRI扫描中对RA解剖学的体内评估.
- 3D碰撞建模用于评估潜在植入部位的机械设备相互作用.
主要成果:
- 确定了三个潜在的心房LP位点:RAA底部 (2.7±1.6毫米壁,低碰撞),RAA顶部中间隙 (1.3±0.4毫米壁,最小的相互作用) 和RA侧壁 (2.6±0.9毫米墙,靠近神经/心房动脉).
- 该RAA基体在墙壁厚度和低虚拟植入物碰撞方面表现出有利的特性.
- 关节炎侧壁虽然厚,但对关键结构 (如神经) 存在接近风险.
结论:
- 由于有利的解剖学和较低的碰撞发生率,RAA基被提议为心房LP植入最合适的位置.
- 在RAA顶部和RA侧壁被确定为替代的,虽然可能不那么理想的植入点.
- 某些特定位置,如RAA中部,RA/SVC结口和隔膜被认为是心房LP固定的最佳位置.
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