• Christof Havel, Wolfgang Schreiber, Helmut Trimmel, Reinhard Malzer, Moritz Haugk, Nina Richling, Eva Riedmüller, Fritz Sterz, and Harald Herkner.
• Department of Emergency Medicine, Medical University of Vienna, A-1090 Vienna, Austria.
• Resuscitation. 2010 Jan 1; 81 (1): 59-64.

ContextAutomated verbal and visual feedback improves quality of resuscitation in out-of-hospital cardiac arrest and was proven to increase short-term survival. Quality of resuscitation may be hampered in more difficult situations like emergency transportation. Currently there is no evidence if feedback devices can improve resuscitation quality during different modes of transportation.ObjectiveTo assess the effect of real time automated feedback on the quality of resuscitation in an emergency transportation setting.DesignRandomised cross-over trial.SettingMedical University of Vienna, Vienna Municipal Ambulance Service and Helicopter Emergency Medical Service Unit (Christophorus Flugrettungsverein) in September 2007.ParticipantsEuropean Resuscitation Council (ERC) certified health care professionals performing CPR in a flying helicopter and in a moving ambulance vehicle on a manikin with human-like chest properties.InterventionsCPR sessions, with real time automated feedback as the intervention and standard CPR without feedback as control.Main Outcome MeasuresQuality of chest compression during resuscitation.ResultsFeedback resulted in less deviation from ideal compression rate 100 min(-1) (9+/-9 min(-1), p<0.0001) with this effect becoming steadily larger over time. Applied work was less in the feedback group compared to controls (373+/-448 cm x compression; p<0.001). Feedback did not influence ideal compression depth significantly. There was some indication of a learning effect of the feedback device.ConclusionsReal time automated feedback improves certain aspects of CPR quality in flying helicopters and moving ambulance vehicles. The effect of feedback guidance was most pronounced for chest compression rate.Copyright 2009 Elsevier Ireland Ltd. All rights reserved.

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