{
  "abstract": "Background Regional data and trends in survival from out-of-hospital cardiac arrest (OHCA) are vital to improve favourable outcomes. Since the last cardiopulmonary resuscitation (CPR) guideline update, comprehensive OHCA data of the metropolitan area of Vienna, Austria, have been scarce.Methods This retrospective study analysed adult non-traumatic OHCA cases in Vienna between January 2019 and December 2023. It assessed emergency medical service records and clinical patient data and reported incidences, return of spontaneous circulation (ROSC) rates, survival to hospital discharge and neurological outcome. Logistic regression assessed associations between outcomes and predictors, while Poisson regression examined incidence changes before, during and after COVID-19 lockdowns.Results During the observation period, the Emergency Medical Service Vienna started CPR in a total of 7433 patients (77.1/100 000 population per year). Sustained ROSC was observed in 24.8%, survival to hospital discharge in 9.3% and a Cerebral Performance Category (CPC) Score of 1 or 2 in 6.8%, similar to prior data. However, patients with witnessed cardiac arrest of suspected cardiac aetiology and an initial shockable rhythm had a substantially higher rate of survival to hospital discharge (39%), and CPC of 1 or 2 (29.6%). Similarly, patients with CPC 1 or 2 before CPR had better outcomes than the overall cohort. During COVID-19, there was a decline in all outcome parameters.Conclusions Survival after OHCA in Vienna seems stable, but significant improvements in outcome parameters are seen in a ‘high outcome potential cohort’ over the last 15 years. This reaffirms the need to continue focusing on rapid initiation of bystander CPR and early defibrillation.",
  "authors": [
    {
      "affiliations": [
        "Emergency Medical Service Vienna, Vienna, Vienna, Austria",
        "PULS Austrian Cardiac Arrest Awareness Association, Vienna, Vienna, Austria"
      ],
      "name": "Mario Krammel"
    },
    {
      "affiliations": [
        "PULS Austrian Cardiac Arrest Awareness Association, Vienna, Vienna, Austria",
        "Department of Emergency Medicine, Medical University of Vienna, Wien, Austria"
      ],
      "name": "Andrea Kornfehl"
    },
    {
      "affiliations": [
        "Emergency Medical Service Vienna, Vienna, Vienna, Austria",
        "PULS Austrian Cardiac Arrest Awareness Association, Vienna, Vienna, Austria"
      ],
      "name": "Daniel Grassmann"
    },
    {
      "affiliations": [
        "Emergency Medical Service Vienna, Vienna, Vienna, Austria"
      ],
      "name": "Thomas Hamp"
    },
    {
      "affiliations": [
        "PULS Austrian Cardiac Arrest Awareness Association, Vienna, Vienna, Austria"
      ],
      "name": "Thomas Grubmiller"
    },
    {
      "affiliations": [
        "Department of Emergency Medicine, Medical University of Vienna, Wien, Austria"
      ],
      "name": "Alexander Nuernberger"
    },
    {
      "affiliations": [
        "PULS Austrian Cardiac Arrest Awareness Association, Vienna, Vienna, Austria",
        "Department of Emergency Medicine, Medical University of Vienna, Wien, Austria"
      ],
      "name": "Hans Domanovits"
    },
    {
      "affiliations": [
        "Emergency Medical Service Vienna, Vienna, Vienna, Austria"
      ],
      "name": "Patrick Aigner"
    },
    {
      "affiliations": [
        "Emergency Medical Service Vienna, Vienna, Vienna, Austria"
      ],
      "name": "Michael Girsa"
    },
    {
      "affiliations": [
        "Emergency Medical Service Vienna, Vienna, Vienna, Austria"
      ],
      "name": "Patrick Glaninger"
    },
    {
      "affiliations": [
        "Emergency Medical Service Vienna, Vienna, Vienna, Austria"
      ],
      "name": "Andreas Zajicek"
    },
    {
      "affiliations": [
        "PULS Austrian Cardiac Arrest Awareness Association, Vienna, Vienna, Austria",
        "Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Vienna, Vienna, Austria"
      ],
      "name": "Patrick Sulzgruber"
    },
    {
      "affiliations": [
        "Department of Emergency Medicine, Medical University of Vienna, Wien, Austria"
      ],
      "name": "Michael Holzer"
    },
    {
      "affiliations": [
        "Emergency Medical Service Vienna, Vienna, Vienna, Austria",
        "Department of Emergency Medicine, Medical University of Vienna, Wien, Austria"
      ],
      "name": "Sebastian Schnaubelt"
    }
  ],
  "title": "Incidence, outcome and dynamics of out-of-hospital cardiac arrest in the city of Vienna between 2019 and 2023",
  "uid": "200ae9ff-7eab-5925-9fb2-4ae9a2b4138c"
}