Cardiac Arrest in Residential Areas With Mobile First-responder Activation
CARAMBA
A Cluster Randomized Clinical Trial of Strategic AED Deployment in High-risk Residential Areas Combined With Activation of Local Residents
1 other identifier
interventional
260
1 country
1
Brief Summary
The study aims to increase proportions of bystander defibrillation during out-of-hospital cardiac arrest (hereof referred to as cardiac arrest) in residential areas with a high density of cardiac arrests. The intervention consists of Automated External Defibrillators (AEDs) and residents' involvement in resuscitation through training and enrollment as citizen responders.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for not_applicable
Started Dec 2021
Longer than P75 for not_applicable
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
June 16, 2020
CompletedFirst Posted
Study publicly available on registry
June 25, 2020
CompletedStudy Start
First participant enrolled
December 1, 2021
CompletedPrimary Completion
Last participant's last visit for primary outcome
January 1, 2027
ExpectedStudy Completion
Last participant's last visit for all outcomes
January 1, 2027
September 15, 2023
September 1, 2023
5.1 years
June 16, 2020
September 14, 2023
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Bystander defibrillation
Proportion of bystander defibrillation of witnessed cardiac arrests
Up to five years after implementation of the intervention
Secondary Outcomes (1)
30-day survival
30 days after date of cardiac arrest
Study Arms (2)
Control sites
NO INTERVENTION* For all 1-1-2 calls with suspected cardiac arrest to the emergency dispatch center will activate a two-tiered response consisting of dispatch of an ambulance with an emergency medical technician, a physician-staffed mobile emergency care unit, and citizen first responders through the Heart Runner app. * The medical dispatcher offers telephone assisted cardiopulmonary resuscitation (CPR) to bystanders. Furthermore, if more than two bystanders are present and an AED is accessible within 1½ minute travel distance (depending on the type of terrain), then one bystander is guided to localize and retrieve the AED.
Intervention sites
EXPERIMENTALAs a supplement to the standard care as described in the control arm, the following will be supplied: * Strategical deployment of AEDs with 24:7 availability and 1½ minute walking distance to every residence within the area. The AEDs will be registered with the AED network and thus linked to the emergency dispatch center. * The emergency dispatch center will retrieve data from used AEDs. * For each interventional area, approximately 120 residents will receive a course in CPR and AED use and subsequently be recruited as citizen responders so that they can be activated through the HeartRunner app in case of a nearby cardiac arrest.
Interventions
Residents will undergo 30-minute courses at study start and if needed during the trial period. During the course they will also be recruited as citizen responders
Citizen responders will be activated in case of suspected cardiac arrest through the heart runner app.
Eligibility Criteria
You may qualify if:
- All witnessed cardiac arrests recognized registered in the Danish Cardiac Arrest Registry occurring within the study sites. This excludes non witnessed cardiac arrests.
- Witnessed cardiac arrest
- Non-traumatic etiology, this excludes intoxication, drowning or suicide.
You may not qualify if:
- Cardiac arrest occurring in a nursing home
- Cardiac arrest not treated by the EMS due to ethical reasons or obvious signs of death
- Not true cardiac arrest (suspected, but not verified)
- Cardiac arrests witnessed by the emergency medical personnel
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Emergency Medical Services, Capital Region, Denmarklead
- TrygFonden, Denmarkcollaborator
- Zoll Medical Corporationcollaborator
- Danish Heart Foundationcollaborator
Study Sites (1)
Emergency Medical Services Copenhagen
Ballerup Municipality, The Capital Region, 2750, Denmark
Related Publications (1)
Juul Grabmayr A, Malta Hansen C, Bo N, Sheikh AP, Hassager C, Ersboll A, Kjaergaard J, Lippert F, Tjornhoj-Thomsen T, Gislason G, Torp-Pedersen C, Folke F. Community intervention to improve defibrillation before ambulance arrival in residential neighbourhoods with a high risk of out-of-hospital cardiac arrest: study protocol of a cluster-randomised trial (the CARAMBA trial). BMJ Open. 2023 Oct 10;13(10):e073541. doi: 10.1136/bmjopen-2023-073541.
PMID: 37816557DERIVED
MeSH Terms
Conditions
Interventions
Intervention Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Fredrik Folke, MD, PhD
EMS Copenhagen
- PRINCIPAL INVESTIGATOR
Carolina M Hansen, MD, PhD
EMS Copenhagen
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- SINGLE
- Who Masked
- OUTCOMES ASSESSOR
- Masking Details
- Due to the nature of the study, treatment allocation is not masked to rescuers or patients. The steering committee will, during the study, receive information on total numbers of arrests and overall success of providing defibrillation. The steering committee will not receive information on whether defibrillation took place in areas allocated to intervention or no intervention. Only the safety committee will have access to all information.
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER GOV
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- M.D., PhD, Professor
Study Record Dates
First Submitted
June 16, 2020
First Posted
June 25, 2020
Study Start
December 1, 2021
Primary Completion (Estimated)
January 1, 2027
Study Completion (Estimated)
January 1, 2027
Last Updated
September 15, 2023
Record last verified: 2023-09
Data Sharing
- IPD Sharing
- Will not share