Joslyn S A, Pomrehn P R, Brown D D
Department of Preventive Medicine and Environmental Health, College of Medicine, University of Iowa, Iowa City.
Am J Emerg Med. 1993 May;11(3):200-6. doi: 10.1016/0735-6757(93)90124-t.
The purpose of this investigation was to determine factors associated with survival from out-of-hospital cardiac arrest, including effects of 911 Emergency Medical Services telephone access and the age of patient. Subjects included 1,753 prehospital cardiac arrest patients in Iowa. Patient survival status and other variables were compared for patients with access to a 911 service with those who did not, and for different age categories, using univariate associations and multivariate logistic regression analysis. The presence of 911 telephone access was significantly associated with survival from out-of-hospital cardiac arrest (9.18% versus 5.35% survival for 911 versus no 911 groups, respectively). This association was partially the result of the significant association of 911 with decreased time from collapse to call for help, decreased time to cardiopulmonary resuscitation (CPR), and decreased time to first shock (if in ventricular fibrillation [VF]). Younger age was significantly associated with survival in univariate analyses (8.94% versus 6.26% survival for younger versus older age groups, respectively), but this was not an independent association, which is indicated by the lack of significance of age in the multivariate model.
本研究的目的是确定与院外心脏骤停存活相关的因素，包括拨打911紧急医疗服务电话的影响以及患者年龄。研究对象包括爱荷华州的1753例院前心脏骤停患者。采用单变量关联分析和多变量逻辑回归分析，比较了有911服务接入的患者与无此服务接入的患者，以及不同年龄组的患者存活状况和其他变量。拨打911电话与院外心脏骤停存活显著相关（911组与无911组的存活率分别为9.18%和5.35%）。这种关联部分是由于911与从心脏骤停至呼救时间缩短、心肺复苏（CPR）时间缩短以及首次电击（如果是心室颤动[VF]）时间缩短显著相关。在单变量分析中，较年轻的年龄与存活显著相关（较年轻组与较年长组的存活率分别为8.94%和6.26%），但这并非独立关联，多变量模型中年龄缺乏显著性即表明了这一点。
