血管外植入式心脏转换器和无心脏起器的相互作用
Alfonso Aranda Hernandez1, G Stuart Mendenhall2
1Medtronic Research and Technology, 8200 Coral Sea Street NE, Mounds View, MN 55112, USA.
概括
无心脏起器和外血管植入式心脏转换器-除器 (ICD) 可以安全地一起工作. 模拟显示器件相互作用的风险很低,确保在节拍期间有效检测心室动.
科学领域:
- 心血管医学 心血管医学
- 生物医学工程 生物医学工程
- 医疗器械技术 医疗器械技术
背景情况:
- 传统的心脏节拍和除装置使用导线,冒着血管损伤和感染等并发症的风险.
- 无心脏起器和外血管植入式心脏转换器-除器 (ICD) 提供无替代品,将组件组合成单个单元或将电极放置在血管系统外.
- 无心脏起器和外血管内科药物的联合使用是有希望的,但缺乏监管部门的批准和设备相互作用的探索.
研究的目的:
- 为了评估无心脏起器和外血管ICD在同时操作期间的相互作用.
- 评估结合这些先进心脏器械的安全性和潜在风险.
主要方法:
- 采用了in-silico模拟,盐水实验和蒙特卡洛模拟.
- 专注于在各种节奏条件下评估心室动 (VF) 检测准确度.
- 调查的关键参数包括节奏脉冲宽度,振幅,设备近距离和方向.
主要成果:
- 静脉动检测不受节拍脉冲宽度高达0.24毫秒的影响,节拍脉冲与静脉动幅度比为2.
- 节拍脉冲高达3V和0.24ms对VF检测的影响最小.
- 蒙特卡洛模拟预测了临床相关场景中不良相互作用的0-4%的概率,近距离影响感知幅度,但不影响方向.
结论:
- 外血管内科和无心脏起器显示出安全共存的潜力.
- 在模拟和实验条件下观察到心室的低风险.
- 需要进一步的临床研究来验证这些发现在患者群体中的有效性.
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