Prediction of Outcome in Out-of-Hospital Cardiac Arrest

NCT06030986 | Not Yet Recruiting DMC

• 1 other identifier: PREDOHCA
• Study Type: observational
• Target: 10,000
• Locations: 1 country
• Sites: 1

Brief Summary

In the course of prehospital respiratory and circulatory arrest, approximately 1000 persons are resuscitated by cardiopulmonary resuscitation in Upper Austria every year. Despite constant further development of methods, equipment and continuous training of the rescue and emergency medical teams working on site, the majority of patients who have to be resuscitated prehospital still die. However, even patients whose circulatory function can be restored during prehospital resuscitation (Return of Spontaneous Circulation, ROSC) require intensive medical care for days to weeks and often find it very difficult to return to a normal, independent life. The success of resuscitation measures depends on the quality of the resuscitation performed as well as on patient-specific factors. Evaluation scales such as the Cerebral Performance Category score (CPC) allow a posteriori assessment of resuscitation success. Nowadays, it is very difficult to estimate the outcome of resuscitation a priori. In many cases, it is not at all clear at the beginning of the treatment pathway whether the individual patient is expected to have an unfavorable prognosis in the context of respiratory arrest or whether a restitutio ad integrum is possible. Thus, the decision to continue or discontinue resuscitation can only be made on the basis of an individual physician's assessment. In addition to the primary concern of stopping resuscitation too early, there is also the risk that medical resources are used beyond the normal level after resuscitation without expecting a successful outcome. Estimating and categorizing the subsequent outcome is difficult and emotionally stressful for the treating team in the acute situation. Some factors that influence outcome are now known: As cerebral hypoperfusion increases, the probability of survival decreases sharply with each passing minute. In this context, potentially reversible causes have been identified in different works, allowing causal therapy to improve neurological outcome. In addition to the most important therapy bridging hypoperfusion, chest compression, with the aim of ensuring minimal perfusion of the brain, immediate defibrillation should be mentioned in particular, which now allows medical laypersons to use defibrillators as part of the Public Access Defibrillation Network. Despite all efforts, however, it is not yet possible to make reliable statements about the probable outcome of persons with respiratory and circulatory arrest with a high degree of certainty in a large number of cases at an early stage. Artificial intelligence refers to the ability of machines to perform cognitive tasks, such as recognizing objects in images and classifying them. For a long time, many processes were too complex to explore through sufficient computing power, storage capacity, and understanding. More recently, however, technological advances have brought machine learning (ML) and the constructs behind it, including those based on so-called neural networks (known since about 1950), back to the fore. Not only the development of theoretical models, but after extensive testing also devices applicable in daily routine operation are available. Modern machine learning methods are enabling a variety of new approaches to assessing operations, including modeling complex systems and finding relationships between models.

Conditions

Cardiac Arrest

Outcome Measures

Primary Outcomes (4)

• AUC-ROC for Prediction of ILCOR Utstein OHCA Core Outcome

  AUC-ROC for Prediction of ILCOR Utstein OHCA Core Outcome

  2015-01-01 - 2023-10-31

• AUC-PRC for Prediction of ILCOR Utstein OHCA Core Outcome

  AUC-PRC for Prediction of ILCOR Utstein OHCA Core Outcome

  2015-01-01 - 2023-10-31

• F1-Score for Prediction of ILCOR Utstein OHCA Core Outcome

  F1-Score for Prediction of ILCOR Utstein OHCA Core Outcome

  2015-01-01 - 2023-10-31

• Confusion Matrix for Prediction of ILCOR Utstein OHCA Core Outcome

  Confusion Matrix for Prediction of ILCOR Utstein OHCA Core Outcome

  2015-01-01 to 2023-10-31

Secondary Outcomes (4)

• AUC-ROC for Prediction of Diagnosis at Hospital Discharge

  2015-01-01 - 2023-10-31

• AUC-PRC for Prediction of Diagnosis at Hospital Discharge

  2015-01-01 - 2023-10-31

• F1-Score for Prediction of Diagnosis at Hospital Discharge

  2015-01-01 - 2023-10-31

• Confusion Matrix for Prediction of Diagnosis at Hospital Discharge

  2015-01-01 - 2023-10-31

Study Arms (2)

ILCOR Utstein OHCA Core Outcome Positive

Respectively for all core outcomes defined.

Diagnostic Test: ILCOR Utstein OHCA Core Outcome

ILCOR Utstein OHCA Core Outcome Negative

Respectively for all core outcomes defined.

Diagnostic Test: ILCOR Utstein OHCA Core Outcome

Interventions

ILCOR Utstein OHCA Core Outcome DIAGNOSTIC_TEST

ILCOR Utstein OHCA Core Outcome

ILCOR Utstein OHCA Core Outcome Negative; ILCOR Utstein OHCA Core Outcome Positive

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

As described in the inclusion criteria.

You may qualify if:

• Patients 18 years or older AND
• between 2015-01-01 and 2023-10-31 AND
• have been treated by emergency medical teams of the Austrian Red Cross, District Branch of Upper Austria AND
• have suffered out-of-hospital cardiac arrest AND
• have been treated by emergency physicians while out of hospital AND
• have been transported to the Kepler University Hospital, Linz, Austria

You may not qualify if:

• \- none

Sponsors & Collaborators

• Kepler University Hospital: lead

Study Sites (1)

Kepler University Hospital

Linz, Upper Austria, 4020, Austria

Location

MeSH Terms

Conditions

Heart Arrest

Condition Hierarchy (Ancestors)

Heart Diseases; Cardiovascular Diseases

Central Study Contacts

Thomas Tschoellitsch, MD

CONTACT

+435768083; thomas.tschoellitsch@jku.at

Jens Meier, MD

CONTACT

+435768083; jens.meier@kepleruniklinikum.at

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: RETROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: September 3, 2023
• First Posted: September 11, 2023
• Study Start: December 1, 2025
• Primary Completion (Estimated): June 30, 2026
• Study Completion (Estimated): December 31, 2026
• Last Updated: July 3, 2025

Record last verified: 2024-10

Data Sharing

• IPD Sharing: Will not share

Locations

AU (1)