# Compression Only CPR Versus Standard CPR in Out-Of-Hospital Cardiac Arrest - A Randomized Survival Study

> **NCT03981107** · NA · RECRUITING · sponsor: **Karolinska Institutet** · enrollment: 3260 (estimated)

## Conditions studied

- Out-Of-Hospital Cardiac Arrest
- Cardiac Arrest
- Cardiopulmonary Resuscitation

## Interventions

- **OTHER:** Chest Compression Only CPR (CO-CPR) performed by trained bystanders after instructions from dispatchers
- **OTHER:** Standard CPR (S-CPR) performed by trained bystanders after instructions from dispatchers

## Key facts

- **NCT ID:** NCT03981107
- **Lead sponsor:** Karolinska Institutet
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** RECRUITING
- **Start date:** 2017-01-01
- **Primary completion:** 2027-12-31
- **Final completion:** 2028-12-31
- **Target enrollment:** 3260 (ESTIMATED)
- **Last updated:** 2026-05-08

## Collaborators

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## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03981107

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03981107, "Compression Only CPR Versus Standard CPR in Out-Of-Hospital Cardiac Arrest - A Randomized Survival Study". Retrieved via AI Analytics 2026-07-28 from https://api.ai-analytics.org/clinical/NCT03981107. Licensed CC0.

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