The Study Aims to Investigate the Frequency and Clinical Characteristics of Out-of-hospital Cardiac Arrests (OHCA) Occurring in Poland in 2023. This Research Seeks to Provide a Comprehensive Analysis of OHCA Incidents Across the Country, Focusing on Their Prevalence and the Associated Clinical fe

1. Objective According to the 2021 European Resuscitation Council (ERC) Guidelines, sudden cardiac arrest is the third leading cause of death in Europe. Accurate and reliable data on the epidemiology of sudden cardiac arrest are essential for better understanding its causes and for analyzing treatment outcomes. Currently, comprehensive statistics on cardiac arrest in Poland are unavailable, resulting in limited knowledge about the scale of this medical issue. This study aims to examine the frequency and clinical characteristics of out-of-hospital cardiac arrests occurring nationwide in 2023. 2. Materials and Methods The analysis will include Emergency Medical Activity Cards from the year 2023. Data for the study will be obtained from the National Center for Monitoring Emergency Medical Services via the Department of Emergency Medical Services of the Polish Ministry of Health and from the Polish Medical Air Rescue. Data will be anonymized by data administrators before being provided to the research team. The analysis of the obtained results will be supplemented with publicly available data from the Central Statistical Office (GUS). The analyzed Emergency Medical Activity Cards will be evaluated according to the Utstein Out-of-Hospital Cardiac Arrest Registry template from 1991, with subsequent updates, the latest being in 2024, published under the title: "Cardiac arrest and cardiopulmonary resuscitation outcome reports: 2024 update of the Utstein Out-of-Hospital Cardiac Arrest Registry template - ILCOR Scientific Statement." 3. Study Population Adults who experienced out-of-hospital cardiac arrest in 2023. 4. Inclusion and Exclusion Criteria Exclusion Criteria: Age under 18 years. Inclusion Criteria: Emergency Medical Activity Cards containing at least one of the following criteria: In section IV DIAGNOSIS with ICD-10 codes: I46, R98, R96. In section III EXAMINATION, interview data indicating that bystanders initiated CPR. ResearchGate * 1 PMC * 1 In the SYMPTOMS table, marked as cardiac arrest. In the ECG table, marked rhythms: VF/VT, Asystole, PEA. In the PATIENT MANAGEMENT table, marked: MANUAL CHEST COMPRESSIONS, MECHANICAL CHEST COMPRESSIONS, DEFIBRILLATION. In the DEATH-WITHDRAWAL table, information on the reason for discontinuing resuscitation efforts. Only adult patients will be included in the study. Available demographic data will include patient age, gender, and the territorial area of the medical event, indicated by the location of the call and the voivodeship. 5. Estimated Study Group Size 100,000 records. 6. Estimated Study Duration The study is planned for a period of 6 months. References: European Resuscitation Council Guidelines 2021. Gräsner JT, Bray JE, Nolan JP, et al. "Cardiac arrest and cardiopulmonary resuscitation outcome reports: 2024 update of the Utstein Out-of-Hospital Cardiac Arrest Registry template - ILCOR Scientific Statement."

NCT Number	NCT06948266
Lead Sponsor	Medical University of Gdansk
Conditions	Cardiac Complications, Sudden Cardiac Arrest, Cardiac Diseases, Cardiac Arrest (CA)
Enrollment	100,000 participants
Start Date	2025-01-01
Primary Completion	2025-06 (estimated)
Study Completion	2025-07 (estimated)
Updated on ClinicalTrials.gov	2025-04-29