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Node Analysis for AC Circuits01:14

Node Analysis for AC Circuits

804
Consider an angioplasty system featuring a catheter equipped with a turbine, a critical tool for removing plaque deposits from coronary arteries. This intricate medical device operates using a circuit model reminiscent of a dual-node RLC circuit powered by a current-controlled voltage source.
To unravel the complexities of this system, nodal analysis is employed, a powerful technique founded on Kirchhoff's current law (KCL), which remains valid for phasors. AC circuits can effectively be...
804

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Updated: May 2, 2026

Ultrasound Cyclo Plasty in Eyes with Glaucoma
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微脉冲循环光凝与连续波循环光凝:一个元分析

Johar Abbas1, Ghadeer Mohammed Abbas2, Muhammad Maaz3

  • 1Al-Shifa Trust Eye Hospital, Rawalpindi, Pakistan.

Journal of glaucoma
|December 16, 2025
PubMed
概括

持续循环光凝血 (CW-CPC) 在患有青光眼的儿童中提供了比微脉冲循环光凝血 (MP-CPC) 更持久的眼内压力 (IOP) 降低. CW-CPC表现出优异的长期内减轻,使其成为更有效的外科选择.

关键词:
连续的循环光凝固.眼内压力 眼内压力微脉冲循环光凝固的微脉冲.儿科玻璃眼 儿童玻璃眼

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科学领域:

  • 眼科医生 眼科 眼科
  • 手术干预 手术干预
  • 儿科玻璃眼治疗的管理方法

背景情况:

  • 微脉冲环光凝血 (MP-CPC) 和连续波环光凝血 (CW-CPC) 是对儿科玻璃眼的手术治疗方法.
  • 关于MP-CPC与CW-CPC的比较疗效存在相互矛盾的数据.

研究的目的:

  • 系统地审查和对比MP-CPC和CW-CPC对儿科玻璃眼的研究进行元分析.
  • 评估MP-CPC与CW-CPC在降低眼内压力 (IOP) 的有效性.

主要方法:

  • 在2025年3月之前,对主要数据库 (PubMed,Embase,Scopus,Cochrane Library,ScienceDirect) 进行系统的文献搜索.
  • 包括比较MP-CPC和CW-CPC在儿科绿内障患者中报告IOP的研究.
  • 随机效应模型对不同时间点IOP降低的元分析.

主要成果:

  • CW-CPC在12个月 (MD: -6.88 mmHg) 和总体上在最后一次随访时 (MD: -4.23 mmHg) 显示出比MP-CPC显著更大的IOP降低.
  • 在CW-CPC和MP-CPC之间在1,3个月和6个月后没有观察到IOP降低的显著差异.
  • 在整体分析中发现了很高的异质性 (I2=80%).

结论:

  • 与MP-CPC相比,CW-CPC在儿科玻璃眼管理中提供了更持久的IOP降低.
  • 在患有青光眼的儿童中,CW-CPC对IOP控制具有优越的长期疗效.
  • 这些发现支持CW-CPC作为持续降低内血压的首选手术选择.