On-scene time in advanced trauma life support by anaesthesiologists

Abstract

Severe injury is the leading cause of death among the young. Trauma systems have improved management of the severely injured and increased survival rates, but there is no level-1 evidence of advanced prehospital trauma care. Advanced prehospital trauma care prolongs on-scene time, which may imply a risk of significant delay in definitive trauma care. The aim of this study was to evaluate on-scene time and influence of (1) the presence of an anaesthesiologist on-scene, (2) prehospital intubation, (3) entrapment, and (4) injury severity. A cohort of registry-based patients brought to Aarhus Trauma Centre. Data were consecutively reported. On-scene time was defined as the time from vehicle arrival to departure. Severe injury is defined by an injury severity score >15. The study was conducted over the period 1998-2000; only patients brought primarily to the trauma centre were included. Statistical tests used include chi, Kruskal-Wallis, Wilcoxon's rank sum and Spearman's rho. Seven hundred and forty-one patients triaged to Aarhus Trauma Centre from which we obtained all information in 596 cases constituted the study group. In 472 cases, an anaesthesiologist was present. On-scene times, median and 95% confidence interval, were as follows: entire study group (n=596) 15.5 min (15-17); ambulance only: 14.0 min (12-15); anaesthesiologist present, no intubation, no entrapment: 15.0 min (14-16); intubation, no entrapment: 21.5 min (16-27); entrapment, no intubation: 21.5 min (17-25); both intubation and entrapment: 22.0 min (16-36). The presence of an anaesthesiologist prolonged the median on-scene time by 1 min and in cases of prehospital intubation by 7.5 min. This result was no different from the prolongation caused by entrapment.