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Radial systems employ time-delay overcurrent relays to reduce load interruptions. When a fault occurs, the nearest breaker opens first, while upstream breakers remain closed due to longer delay settings. This approach ensures minimal disruption to the rest of the system.
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对比两个远距离的辐射静脉血静装置的辐射动脉病变后TACE:一个随机试验.

Cheng-Chun Lee1, Jia-Min Wu2,3, Fen-Ni Tsai1

  • 1Division of Diagnostic Radiology, Department of Medical Imaging, Tungs' Taichung Metroharbor Hospital, No. 699, Section 8, Taiwan Boulevard, Wuqi District, Taichung City, 435, Taiwan (R.O.C.).

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经过修改的TR带和PreludeSYNC DISTAL (PSD) 在超动脉化学栓塞 (TACE) 过程中,在远端透射接入 (dTRA) 后实现静血的安全性和有效性相似. 这两种装置都导致了可比的部分辐射动脉封闭率和接入部位并发症.

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科学领域:

  • 干预性放射学 干预性放射学
  • 血管接入管理系统
  • 在瘤学瘤学.

背景情况:

  • 远距离透射接入 (dTRA) 是一种新兴的跨动脉化学栓塞 (TACE) 技术.
  • 在dTRA后,有效的血静至关重要,以确保血管通透性和患者安全.
  • 对比新的静血器件对于优化干预程序至关重要.

研究的目的:

  • 为了比较修改后的TR Band与PreludeSYNC DISTAL (PSD) 设备的通透性结果和安全概况.
  • 在接受TACE的患者中评估远距离透射接入 (dTRA) 后的静血.
  • 评估放射性动脉封闭 (RAO) 和接入部位并发症的发生率.

主要方法:

  • 一项前性随机试验,涉及104名参与者 (143项手术) 通过4-Fr dTRA接受TACE.
  • 使用修改后的TR带 (n=74) 或PSD (n=69) 实现了血液静止.
  • 主要终点:通过多个时间点的多普勒超声学评估的辐射动脉封闭 (RAO). 二级终点:静血性能和并发症.

主要成果:

  • 在这两组中都没有完全的RAO发生. 部分RAO在4小时达到峰值,并显示出显著的自发分辨率 (85.3%).
  • 在修改后的TR波段和PSD之间,部分RAO的总体发病率没有显著差异.
  • 访问部位并发症 (血液瘤,伪动脉瘤) 的比率相似,并且两组之间延迟血静没有显著差异.

结论:

  • 修改后的TR带和PSD在部分辐射动脉封闭和安全性方面是可比的.
  • 这两种设备都在TACE程序的dTRA后提供有效的血静.
  • 这些发现支持使用任何设备来优化dTRA程序的结果.