Comparing two CPR methods for out-of-hospital cardiac arrest
Official title: A Randomized Trial Comparing Survival After of a Simplified Form of Cardiopulmonary Resuscitation (CPR) Consisting of Compressions Only Compared to CPR With Compressions and Rescue Breaths
Run by Karolinska Institutet · NCT03981107 · Data updated 2026-11-12
This study is testing whether Chest Compression Only CPR is just as effective as Standard CPR for helping people who have a cardiac arrest outside of the hospital.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 3260 (estimated) |
| Sponsor | Karolinska Institutet Academic / other |
| Locations | 2 sites (Bergamo and 1 other locations) |
| Status | Recruiting |
| Started | January 1, 2017 |
| Main results expected | December 31, 2027 |
| Study ends | December 31, 2028 |
| Registry record updated | May 8, 2026 |
| Trial ID | NCT03981107 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults who are unconscious with no or abnormal breathing, and whose cardiac arrest is witnessed by a bystander trained in CPR.
✕Probably not a fit
Patients who are under 18 years old, have asphyxia-related cardiac arrest, or have not been trained in CPR may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This trial investigates the effectiveness of Chest Compression Only CPR (CO-CPR) versus Standard CPR (S-CPR) in cases of out-of-hospital cardiac arrest (OHCA). It is a multicenter, randomized, open-label trial where bystanders trained in CPR will receive dispatcher instructions to perform either CO-CPR or S-CPR. The primary goal is to determine if CO-CPR is non-inferior to S-CPR in terms of survival rates. The study aims to enhance bystander CPR rates and improve outcomes for patients experiencing OHCA.
Why it matters
Potential benefit: If successful, this study could lead to increased survival rates for patients experiencing out-of-hospital cardiac arrest.
How similar studies have gone: Previous studies have shown promising results for CO-CPR, suggesting it may be as effective as traditional CPR in certain scenarios.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Unconsciousness with no, abnormal or agonal breathing (suspected OHCA) * The suspected OHCA is witnessed (seen or heard) * Any Bystander at the scene has previous training in CPR Exclusion Criteria: * Age below 18 years * Collapse is not witnessed * Bystander has no prior CPR training * Obvious asphyxia (i.e. hanging, foreign body, suffocation, strangulation) * Obvious drug overdose / intoxication * Pregnancy * Trauma (penetrating, blunt, burn injury) Post randomisation exclusion Criteria from data analysis: * Not EMS-verified cardiac arrest * Previous do not resuscitate (DNR) decision
Where it's running
-
AREU, Agenzia Regionale Emergenza Urgenza
Bergamo, Italy Recruiting -
SOS Alarm AB
Stockholm, Sweden Recruiting
Study contacts
- Principal investigator: Jacob Hollenberg, MD, PhD — Karolinska Institutet
- Study coordinator: Jacob Hollenberg, MD. PhD
- Email: jacob.hollenberg@ki.se
- Phone: 004686163816
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.