• Scott Ninokawa, Jessica Friedman, Danielle Tatum, Alison Smith, Sharven Taghavi, Patrick McGrew, and Juan Duchesne.
• 5783 Department of Surgery, Tulane University School of Medicine, New Orleans, LA, USA.
• Am Surg. 2020 Aug 1; 86 (8): 937-943.

IntroductionThere is disagreement in the trauma community concerning the extent to which emergency medical services (EMS) should perform on-scene interventions. Additionally, in recent years the "ABC" algorithm has been questioned in hypotensive patients. The objective of this study was to quantify the delay introduced by different on-scene interventions.MethodsA retrospective analysis of hypotensive trauma patients brought to an urban level 1 trauma center by EMS from 2007 to 2018 was performed, and patients were stratified by mechanism of injury and new injury severity score (NISS). Independent samples median tests were used to compare median on-scene times.ResultsAmong 982 trauma patients, median on-scene time was 5 minutes (interquartile range 3-8). In penetrating trauma patients (n = 488) with NISS of 16-25, intubation significantly increased scene time from 4 to 6 minutes (P < .05). In penetrating trauma patients with NISS of 10-15, wound care significantly increased scene time from 3 to 6 minutes (P < .05). Tourniquet use, interosseous (IO) access, intravenous (IV) access, and needle decompression did not significantly increase scene time.ConclusionUnderstanding that intubation increases scene time in penetrating trauma, while IV and IO access do not, alterations to the traditional "ABC" algorithm may be warranted. Further investigation of prehospital interventions is needed to determine which are appropriate on-scene.

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