Outcomes for patients with out-of-hospital cardiac arrest can be improved by bystander cardiopulmonary resuscitation (CPR). Dispatcher-assisted CPR increases both the likelihood of CPR being performed, and the chance of survival for the arrested patient. Due to the urgency of the situation, CPR may be advised in patients who are subsequently found not to be in cardiac arrest.

Ng and colleagues look at whether bystander CPR causes harm in this group of patients.

中文翻译：

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调度员辅助的心肺复苏术既有益又有害？

旁观者心肺复苏术 (CPR) 可以改善院外心脏骤停患者的预后。调度员辅助心肺复苏术增加了心肺复苏术的可能性，以及被捕患者的生存机会。由于情况紧急，可能会建议对随后发现没有心脏骤停的患者进行心肺复苏术。

Ng 及其同事研究了旁观者心肺复苏术是否会对这组患者造成伤害。