• Erik Zakariassen, Oddvar Uleberg, and Jo Røislien.
• Department of Research, Norwegian Air Ambulance Foundation, Drøbak, Norway; Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway. Electronic address: erik.zakariassen@norskluftambulanse.no.
• Air Med. J. 2015 Mar 1; 34 (2): 98-103.

ObjectiveThe main objective of the Norwegian air ambulance service is to provide advanced emergency medicine to critically ill or severely injured patients. The government has defined a time frame of 45 minutes as the goal within which 90% of the population should be reached. The aims of this study were to document accurate flying times for rotor wing units to the scene and to determine the rates of acute primary missions in Norway.MethodsWe analyzed operational data from every acute primary mission from all air ambulance bases in Norway in 2011, focusing on the flying time taken to reach scene, the municipality requesting the flight, and the severity score data.ResultsA total of 5,805 acute primary missions were completed in Norway in 2011. The median flying time was 19 minutes (25%-75% percentiles: 13-28). The mean mission rate for the 17 bases was 7.5 (95% confidence interval, 7.4-7.8 per 10,000 inhabitants). The overall mean (standard deviation) National Committee on Aeronautics score for all missions was 4.07 (1.30).ConclusionThe government's expectation of serving the entire population via HEMS within 45 minutes appears to be achieved on a national level. However, vast differences remain in the flying times and rates between bases.Copyright © 2015 Air Medical Journal Associates. Published by Elsevier Inc. All rights reserved.

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