Dispatcher-Assisted Resuscitation Trial (DART)
Randomized Trial of Dispatcher-Assisted CPR:Chest Compression Alone Versus Chest Compression Plus Ventilation
Study Overview
Status
Conditions
Detailed Description
Out-of-hospital cardiac arrest, a condition characterized by a person suddenly collapsing due to heart stoppage, is a leading cause of death in the United States. In out-of-hospital cardiac arrest, survival is dependent upon what the American Heart Association has termed the chain of survival which includes quick activation of the 9-1-1 system, prompt cardiopulmonary resuscitation (CPR), early defibrillation, and qualified advanced life support care (paramedic care). CPR allows for some circulation and delivery of oxygen to vital organs when the heart is no longer beating on its own. However, in some instances, the citizen bystander has not been trained in CPR, presenting a circumstance where the cardiac arrest victim may not receive CPR until the arrival of emergency medical services (EMS) personnel (i.e., paramedics). The delay in CPR adversely affects outcome and dcreases the chance of survival. In response to this need, the EMS Division of Public Health - Seattle and King County developed and instituted telephone CPR instructions that could be provided "on-the-spot" during a cardiac arrest by the emergency medical (9-1-1) dispatcher. The instructions are designed to be given over the phone to persons who have not had previous CPR training so that they can initiate CPR prior to the arrival of EMS personnel and have been termed "dispatcher-assisted" CPR. The dispatcher instructions provided by the dispatch agencies of King County include the standard "full" CPR protocol of ventilations (breathing into the victim's mouth to inflate the lungs) and chest compressions(pumping on the patients chest to help circulate the blood). The ventilations oxygenate the blood while the chest compressions pump the oxygenated blood forward. This EMS program has led to a considerable increase in the proportion of cardiac arrest victims in King County that receive citizen bystander CPR prior to EMS arrival and has been associated with improved survival (appendix 1).
Comparison: Dispatcher-assisted CPR instructions with compressions and ventillations compared to dispatcher-assisted CPR instructions with compressions only.
Study Type
Enrollment (Actual)
Phase
- Phase 3
Contacts and Locations
Study Locations
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England
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London, England, United Kingdom
- London Ambulance Service
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Washington
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Olympia, Washington, United States
- Thurston County Dispatch
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Seattle, Washington, United States, 98104
- Division of Emergency Medical Services, Public Health - Seattle and King County
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Cardiac arrest events where CPR is not ongoing but a bystander is willing to attempt with assistance
Exclusion Criteria:
- Pregnancy
- Prisoners
- Cardiac arrest due to asphyxia, drowning, hanging, or electrocution
Study Plan
How is the study designed?
Design Details
- Primary Purpose: TREATMENT
- Allocation: RANDOMIZED
- Interventional Model: PARALLEL
- Masking: NONE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
|---|---|
|
ACTIVE_COMPARATOR: 1
When a 911 call is determined to be a cardiac arrest, the caller reporting the event who needs or desires instructions to perform CPR while waiting for EMS to arrive will receive dispatcher-assisted CPR instructions with chest compressions only
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Delivery of telephone CPR instructions to lay callers with hands-only chest compressions when the patient is identified to be in cardiac arrest
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ACTIVE_COMPARATOR: 2
When a 911 call is determined to be a cardiac arrest, the caller reporting the event who needs or desires instructions to perform CPR while waiting for EMS to arrive will receive dispatcher-assisted CPR instructions with chest compressions and breaths
|
Delivery of telephone CPR instructions to lay callers with chest compressions and ventilations when the patient is identified to be in cardiac arrest
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Survival to hospital discharge
Time Frame: varied
|
assessed at hospital discharge
|
varied
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Neurological status at hospital discharge
Time Frame: varied
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assessed at hospital discharge
|
varied
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Collaborators and Investigators
Investigators
- Principal Investigator: Mickey S Eisenberg, MD, PhD, Division of Emergency Medical Services, Public Health - Seattle and King County
Publications and helpful links
Study record dates
Study Major Dates
Study Start
Primary Completion (ACTUAL)
Study Completion (ACTUAL)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ESTIMATE)
Study Record Updates
Last Update Posted (ESTIMATE)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- RARC-0001-01
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