Out-of-hospital cardiac arrest (OHCA) with shockable pulseless ventricular tachycardia or fibrillation not responding to defibrillation is a medical challenge. Novel treatment strategies have emerged for so-called refractory ventricular fibrillation not responding to three or more defibrillations but the evidence for optimal timing for these strategies is sparse. The primary aim of this observational study was to assess survival in relation to total numbers of defibrillations in OHCA.

中文翻译：

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与院外心脏骤停除颤尝试次数相关的生存率


伴可电击无脉性室性心动过速或颤动的院外心脏骤停 （OHCA） 对除颤无反应是一项医学挑战。对于所谓的难治性心室颤动，已经出现了对 3 次或更多次除颤无反应的新型治疗策略，但这些策略的最佳时机的证据很少。这项观察性研究的主要目的是评估与 OHCA 除颤总数相关的生存率。