Survival after out-of-hospital cardiac arrest requires an integrated system of care (chain of survival) between the community elements responding to an event and the healthcare professionals who continue to care for and transport the patient for appropriate interventions. As a result of the dynamic nature of the prehospital setting, coordination and communication can be challenging, and identification of methods to optimize care is essential. This 2019 focused update to the American Heart Association systems of care guidelines summarizes the most recent published evidence for and recommendations on the use of dispatcher-assisted cardiopulmonary resuscitation and cardiac arrest centers. This article includes the revised recommendations that emergency dispatch centers should offer and instruct bystanders in cardiopulmonary resuscitation during out-of-hospital cardiac arrest and that a regionalized approach to post–cardiac arrest care may be reasonable when comprehensive postarrest care is not available at local facilities.

中文翻译：

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2019年美国心脏协会重点关注医疗系统更新：调度员协助的心肺复苏和心脏骤停中心：《美国心脏协会心肺复苏和紧急心血管护理指南》的更新。

院外心脏骤停后的生存需要在响应事件的社区成员与继续护理和转运患者以进行适当干预的医护人员之间建立一套综合的护理系统（生存链）。由于院前环境的动态性质，协调和沟通可能具有挑战性，因此确定优化护理方法的必不可少。2019年重点更新的美国心脏协会护理系统指南总结了使用调度员协助的心肺复苏和心脏骤停中心的最新公开证据和建议。