We updated the design of this site on December 18, 2017. Learn more.
ClinicalTrials.gov Menu

Quality of Cardiopulmonary Resuscitation Without and With Defibrillator Feedback

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
ClinicalTrials.gov Identifier: NCT00138996
Recruitment Status : Completed
First Posted : August 30, 2005
Last Update Posted : August 27, 2007
Information provided by:

Study Description
Brief Summary:
Quality of bystander cardiopulmonary resuscitation (CPR) affect patient survival. Quality of professional CPR on patients has not been studied in detail, but it is regularly reported that the quality when tested on manikins deteriorates dramatically within months after training. Automated direct feedback on CPR quality from manikins brings quality back within a couple of minutes. Similar feedback has been incorporated into a defibrillator which also monitors quality of CPR. We hypothesise that quality of professional clinical CPR improves with such feedback

Condition or disease Intervention/treatment Phase
Cardiac Arrest Device: automated direct feedback on CPR from defibrillator Phase 2

Detailed Description:

Defibrillators which monitor quality of CPR via changes in thoracic impedance (for ventilation) and movement of the sternum employing an accelerometer (for chest compressions) will be employed in ambulances in Akershus county (Norway), Stockholm (Sweden) and London (UK). During phase 1 quality of CPR will be monitored without feedback from the defibrillator. During phase 2 the ambulance personnel will receive feedback via the defibrillator. During phase 3 the ambulance personnel will be retrained with particular attention to the quality problems that became apparent in phase 3.

Quality of CPR will be continuously recorded by the defibrillators and the data collected and sent via internet to Laerdal Medical. All other cardiac arrest data including survival will be recorded using standard datasets for cardiac arrest research as developed by a task force with members from the organisations in International Liaison Committee on resuscitation (Utstein guidelines). The data will be annotated and analyzed in detail by researchers at University of Oslo

Study Design

Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 300 participants
Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Can the Quality of Cardiopulmonary Resuscitation Improve With Direct Online Feedback From the Defibrillator to the Rescuers on Their Resuscitation Efforts
Study Start Date : March 2002
Study Completion Date : June 2006

Resource links provided by the National Library of Medicine

MedlinePlus related topics: CPR
U.S. FDA Resources

Arms and Interventions

Outcome Measures

Primary Outcome Measures :
  1. fraction of time without CPR
  2. chest compression depth
  3. chest compression frequency
  4. chest compression/decompression duty cycle
  5. ventilation frequency

Secondary Outcome Measures :
  1. rate of return of spontaneous circulation

Eligibility Criteria

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Cardiac arrest out-of-hospital

Exclusion Criteria:

  • < 18 years old
Contacts and Locations

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00138996

Ulleval University Hospital
Oslo, Norway, N-0407
Stockholm Ambulance Service
Stockholm, Sweden
United Kingdom
London Ambulance Service
London, United Kingdom
Sponsors and Collaborators
University of Oslo
Laerdal Medical
Ullevaal University Hospital
Health Region East, Norway
Norwegian Air Ambulance Foundation
London Ambulance Service
Stockholm Ambulance Service
University of Chicago
Principal Investigator: Petter A Steen University of Oslo, Ulleval University Hospital