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耳前动和转换与脉冲电场输送:概念的临床前验证
Nicholas Y Tan1, Freddy Del-Carpio Munoz1, Jason A Tri1
1Department of Cardiovascular Medicine, Mayo Clinic Rochester, 200 1St Street Southwest, Rochester, MN, 55905, USA.
概括
脉冲电场 (PEF) 显示出通过诱导可逆电穿孔来终止心房动 (AF) 和心房动 (AFL) 的前景. 这项研究发现,PEF传递对于转换心律失常是可行的,尽管为了安全性和有效性需要进一步优化.
科学领域:
- 心血管电生理学 心血管电生理学
- 医疗器械技术 医疗器械技术
- 心脏节律失常的研究研究.
背景情况:
- 目前针对心房动 (AF) 的基于设备的治疗方法有限.
- 脉冲电场 (PEF) 是通过诱导心脏组织的可逆电穿孔来终止AF的潜在方法.
研究的目的:
- 通过可逆电穿孔评估提供PEF用于转换心房律乱的可行性.
- 在猪模型中研究PEF在终止诱导的心房动和动方面的疗效.
主要方法:
- 采用了四种猪模型,采用定制的十角导管,在内心右心室 (RA) 和冠状动脉鼻 (CS) 或RA和心表左心室 (epiLA) 配置中进行PEF输送.
- 诱导心房动 (AF) 和心房动 (AFL) 使用编程刺激,提供单一单相PEF脉冲,具有不同的电压和脉冲宽度.
- 记录了成功和失败的转换尝试,并注意到PEF后的信号变化和诱导的心律失常.
主要成果:
- 在37例AF/AFL发作中成功转换了33例 (89.1%),主要是通过1型断裂.
- 转换成功率随着电压的提高而增加,在≥1500V (RA/CS) 和≥2000V (RA/epiLA) 时成功率超过70%.
- 观察到过渡性心律失常,如心房内延迟和高度心房阻塞,以及当前设置的显著肌肉刺激.
结论:
- 提供PEF是一种可行的方法来终止心房律乱.
- 需要进一步的研究来优化PEF参数,以提高有效性和安全性.
- 这项研究强调了PEF作为一种新的治疗策略,用于管理心房律乱的潜力.
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