SIEMS - EMS Italian Society, Milano, Italy.
AREU - EMS Lombardy Agency, Milano, Italy.
Acta Biomed. 2021 Nov 3;92(5):e2021486. doi: 10.23750/abm.v92i5.11804.
The incidence of Out of Hospital Cardiac Arrest (OHCA) is estimated at 1/1000 persons/year. In the pre-Covid-19 era world, OHCA survival rate in Europe was 7-6%. The main objective is to analyze OHCA survival in the Lombardy region by highlighting the factors related to both the victims' characteristics and the chain of survival.
All OHCAs were grouped into four pre-established periods in 2019 (14-23 January; 15-24 April; 15-24 July; 14-23 October). Following the Utstein method, we selected witnessed OHCAs with presumed cardiac etiology. The outcome of each case was collected in four moments in time: Return of spontaneous circulation (ROSC), Emergency Department (ED), 24 hours and 30 days. The neurological outcome 30 days after OHCA was also investigated and stratified with the Cerebral Performance Category Score (CPC).
We selected 456 cases of OHCA with witnessed cardiac etiology. ROSC was achieved in 121 cases (26.5%), survival in the Emergency Departments in 110 patients (24.1%), after 24 hours in 86 (18.86%) and after 30 days in 72 (15.8%). Male sex was shown to improve OHCA survival. A shockable presentation rhythm, Cardiopulmonary Resuscitation (CPR) performed by bystanders and the activation of Public Access Defibrillation (PAD) positively influenced OHCA outcome.
Males are more predisposed to incur an OHCA event than females, but they have greater chances of survival. Factors most related to survival are: shockable rhythm, bystanders CPR and the activation of a PAD. (www.actabiomedica.it).
院外心脏骤停（OHCA）的发病率估计为每 1000 人/年 1 例。在新冠疫情前的世界，欧洲 OHCA 的存活率为 7-6%。主要目的是通过分析伦巴第地区 OHCA 的存活率，突出与受害者特征和生存链相关的因素。
将所有 OHCA 分为 2019 年四个预先设定的时间段：2019 年 1 月 14-23 日；2019 年 4 月 15-24 日；2019 年 7 月 15-24 日；2019 年 10 月 14-23 日。按照乌斯太因方法，我们选择了目击的、疑似心源性的 OHCA。每个病例的结果在四个时间点收集：自主循环恢复（ROSC）、急诊部（ED）、24 小时和 30 天。还研究了 OHCA 后 30 天的神经学结果，并根据脑功能分类评分（CPC）进行分层。
我们选择了 456 例目击的、疑似心源性的 OHCA。ROSC 在 121 例（26.5%）中实现，在急诊科存活 110 例（24.1%），24 小时后存活 86 例（18.86%），30 天后存活 72 例（15.8%）。男性的 OHCA 存活率更高。可除颤的表现节律、旁观者心肺复苏（CPR）和公共接入除颤（PAD）的激活对 OHCA 结果有积极影响。
男性比女性更容易发生 OHCA 事件，但他们有更大的生存机会。与生存最相关的因素是：可除颤节律、旁观者 CPR 和 PAD 的激活。（www.actabiomedica.it）。
