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Quality of Cardiopulmonary Resuscitation Without and With Defibrillator Feedback

This study has been completed.
Laerdal Medical
Ullevaal University Hospital
Health Region East, Norway
Norwegian Air Ambulance Foundation
London Ambulance Service
Stockholm Ambulance Service
University of Chicago
Information provided by:
University of Oslo Identifier:
First received: August 29, 2005
Last updated: August 24, 2007
Last verified: August 2007
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 Intervention Phase
Cardiac Arrest
Device: automated direct feedback on CPR from defibrillator
Phase 2

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: 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

Resource links provided by NLM:

Further study details as provided by University of Oslo:

Primary Outcome Measures:
  • fraction of time without CPR
  • chest compression depth
  • chest compression frequency
  • chest compression/decompression duty cycle
  • ventilation frequency

Secondary Outcome Measures:
  • rate of return of spontaneous circulation

Estimated Enrollment: 300
Study Start Date: March 2002
Study Completion Date: June 2006
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


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
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Please refer to this study by its identifier: 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
  More Information

Publications automatically indexed to this study by Identifier (NCT Number): Identifier: NCT00138996     History of Changes
Other Study ID Numbers: 402-01139
2002-OSL-MDD-0009 (DNVeritas)
Study First Received: August 29, 2005
Last Updated: August 24, 2007

Keywords provided by University of Oslo:
cardiac arrest

Additional relevant MeSH terms:
Heart Arrest
Heart Diseases
Cardiovascular Diseases processed this record on May 24, 2017