Predictors of Out of Hospital Cardiac Arrest Outcomes in Pre-Hospital Settings; a Retrospective Cross-sectional Study

• Published in: Archives of academic emergency medicine 2019-01, Vol.7 (1), p.36-36
• Main Authors: Navab, Elham, Esmaeili, Maryam, Poorkhorshidi, Nastaran, Salimi, Rasoul, Khazaei, Afshin, Moghimbeigi, Abbas
• Format: Article
• Language: English
• Subjects: Cardiopulmonary Resuscitation; Emergency Medical Services; Emergency Medical Technicians; Original; Out-of-Hospital Cardiac Arrest
• ISSN: 2645-4904
• DOI: 10.22037/aaem.v7i1.370

Different potential factors can affect the outcomes of Out of Hospital Cardiac Arrest (OHCA). The present study aimed to identify important factors contributing to the Return of Spontaneous Circulation (ROSC) and Survival to Hospital Discharge (SHD) in these patients. This cross-sectional study was conducted on all the OHCA patients who underwent Cardiopulmonary Resuscitation (CPR) in emergency medical service (EMS) of Hamedan province during 2016-2017. All the relevant data were retrieved from three sources, according to Utstein's style. In addition, univariate and multivariate logistic regressions were employed to identify predictive factors of ROSC and SHD using SPSS software, version 20. Among the 3214 eligible patients whose data were collected, most OHCA patients were female (59.7%) with the mean age of 58 years. Moreover, the majority of OHCAs (77.8%) occurred at home during 8pm-8am (65.1%) and about 26.3% of OHCAs were witnessed, with only 5.1% bystander-initiated CPR. Furthermore, the median ambulance response time and CPR duration were 6.0 and 20 minutes, respectively. Overall, ROSC and SHD success rates were 8.3 and 4.1%, respectively. Bystander CPR was found to be the most effective predicting factor for the success rate of ROSC (AOR=3.26, P