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去颤

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去颤(defibrillation)又称除颤,是利用医疗器械或特定药品终止心脏颤动的治疗方法,最常见者是用电击终止心房或心室纤颤。

去颤对于危及生命的心律不整,如心室颤动无脉性心室频脉是一种常见的治疗手段,常见的具体方法为使用去颤器(也称除颤仪)给予心脏治疗剂量的电能。虽然原理目前尚未明了,但普遍认为这么做能使极大部分的心肌去极化,终止心律不整,并使窦房结中的节律点能重建窦性心律

电击

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去颤电击器又分为体外型、静脉置入型、植入型,依不同需要使用。

去颤实际上是将心脏电击停跳,制造心脏停搏。心室颤动中心脏电信号活动紊乱,窦房结无法发出信号控制心脏有效进行血液循环,因此使用外部电流直接使得心脏停跳。停跳后,立刻进行CPR,以求窦房结自行恢复心跳。因此,对于已经心脏停搏的病人,是不进行电击的,电击了也是心脏停搏。仅对心率失常的病人电击。

药物

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心导管手术

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  • 心导管射频烧灼术(Radiofrequent catheter ablation;RFCA)[1]
  • 热气球导管

另见

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参考文献

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外部链接

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  1. ^ 認識心臟電氣生理檢查與心導管射頻燒灼術 (PDF). 台湾医院. [2020-10-07]. (原始内容存档 (PDF)于2020-10-09). 
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去颤
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