Prehospital Predictors of Survival in Patients with Out-of-Hospital Cardiac Arrest

Abstract

Background and Objectives: Despite advances in the treatment of heart diseases, the outcome of patients experiencing sudden cardiac arrest remains poor. The aim of our study was to determine the prehospital variables as predictors of survival outcomes in out-of-hospital cardiac arrest (OHCA) victims. Materials and Methods: This was a retrospective observational cohort study of OHCA cases. EMS protocols created in accordance with the Utstein style reporting for OHCA, first responder intervention reports, medical dispatch center dispatch protocols and hospital medical reports were all reviewed. Multivariate logistic regression was performed with the following variables: age, gender, witnessed status, location, bystander CPR, first rhythm, and etiology. Results: A total of 381 interventions with resuscitation attempts were analyzed. In more than half (55%) of them, bystander CPR was performed. Thirty percent of all patients achieved return of spontaneous circulation (ROSC), 22% of those achieved 30-day survival (7% of all OHCA victims), and 73% of those survived with Cerebral Performance Score 1 or 2. The logistic regression model of adjustment confirms that shockable initial rhythm was a predictor of ROSC [OR: 4.5 (95% CI: 2.5–8.1)] and 30-day survival [OR: 9.3 (95% CI: 2.9–29.2)]. Age was also associated (≤67 years) [OR: 3.9 (95% CI: 1.3–11.9)] with better survival. Conclusions: Elderly patients have a lower survival rate. The occurrence of bystander CPR in cardiac arrest remains alarmingly low. Shockable initial rhythm is associated with a better survival rate and neurological outcome compared with non-shockable rhythm.

Out-of-hospital cardiac arrest and measures of cardiopulmonary resuscitation in Emergency Medical Service Pančevo: One-year analysis

“…Compared to similar studies, the results obtained also indicate to older population, with an average age over 65 years [10,17,20]. Data from the world literature agree with the results of this study, showing that the residence is convincingly in the first place in terms of the location where the OHCA [17,21] occurred. This has considerable significance.…”

“…This can be associated with the most common cause of VBS-CVS disease, which is common in the elderly population, in emergency medical service pančevoone-year analysis U poređenju sa sličnim istraživanjima, dobijeni rezultati takođe ukazuju na stariju populaciju, sa prosečnom starošču preko 65 godine [10,17,20]. Podaci iz svetske literature se slažu sa rezultatima ovog rada, pokazujući da je prebivalište ubedljivo na prvom mestu po lokaciji na kojoj se zadesio unesrećeni sa VSZ [17,21]. To ima višestruki značaj jer, pre svega, povlači za sobom pitanje izvodjenja BLS-a u datim uslovima; u većini slučajeva svedoci na toj lokaciji su laici, uglavnom članovi porodice ili poznanici.…”