''the outcome of out-of-hospital, non-traumatic cardiac arrest: the study of Dokuz Eylul University Hospital Emergency Department between 2019-2022''

Introductıon: Thousands of people in cardiac arrest cases all over the world and in our country are resuscitated with effective and successful CPR applications. This shows us how important the effort to improve CPR practices is. Since there are few studies on survival in cardiac arrest cases in our country so far, we conducted this study to determine the survival rate in cardiac arrest cases in our hospital and to compare our current situation with the study conducted in our hospital on this subject in the past years. Methods: In this study, demographic characteristics, admission patterns, characteristics of cardiopulmonary resuscitation and outcome of cardiopulmonary arrest (CPA) cases admitted to the Emergency Department of Dokuz Eylul University Hospital between 01.01.2019-01.06.2022 were retrospectively analyzed. Patients with in-hospital arrest, traumatic arrest, patients under 18 years of age and patients whose files could not be accessed were excluded from the study. Fındıngs: Between January 1, 2019 and June 1, 2022, 480 out of 347,728 patients admitted to the emergency department of DEUH with out-of-hospital non-traumatic cardiopulmonary arrest were included in the study. Of the patients, 287 (59.8%) were male and 193 (40.2%) were female with a mean age of 69.9 ± 14.9 years (range: 19-102) and a median age of 72 years (IQR: 60-81). The mean age of 431 patients who died at 30 days (71.1±14.8) was statistically significantly higher than the mean age of 49 living patients (59.4±12.08) (p: < 0.001). The mean duration of CPR was 17.3±13.5 minutes (range: 0-84). The mean duration of CPR in 431 patients who died on day 30 (18.5±13.4) was statistically significantly longer than the mean duration of CPR in 49 living patients (6.35±8.3) (p: <0.001). The 30-day survival of patients who were arrested for cardiac reasons was statistically significantly higher than those who were arrested for non-cardiac reasons (χ2= 69.900, p < 0.001 and χ2= 41.966, p < 0.001, respectively) and the proportion of patients with a modified rankin score of 0 was 64.3%. The 30-day survival of patients with VT/VF as the arrival rhythm was statistically significantly higher than the other rhythms (p < 0.001 and p < 0.001, respectively) and the proportion of patients with a modified rankin score below 3 was 72%. When we looked at the 24-hour outcome of the patients, 377 (78.5%) patients were exitus and 103 (21.5%) patients were alive. In the 30-day outcome of the patients, 431 (89.8%) patients were exitus and 49 (10.2%) patients were alive. Conclusions: Patients with cardiac arrest had statistically significantly higher 30-day survival and better neurologic outcome than those with non-cardiac arrest. Patients with VT/VF arrhythmia had statistically significantly higher 30-day survival and better neurologic outcome than patients with other rhythms. In our study, the 24-hour survival rate of nontraumatic cardiac arrests in our emergency department was 21.5% and the 30-day survival rate was 10.2%. The 30-day survival rate increased significantly compared to the study conducted 12 years ago in the emergency department of our hospital.