• Darren Braude, Douglas Dixon, Michael Torres, John P Martinez, Sean O'Brien, and Timothy Bajema.
• Prehosp Emerg Care. 2021 Jul 1; 25 (4): 583-587.

BackgroundRapid Sequence Airway (RSA) describes the administration of an induction agent and paralytic followed by the intended primary placement of an extraglottic airway device rather than an endotracheal tube. The purpose of this study was to determine the success rates for prehospital RSA. The secondary goal was to determine aspiration rates among patients managed with RSA.MethodsAdult and pediatric prehospital RSA cases between 2005 and 2017 reported to an airway quality assurance registry from one ground and one air agency were reviewed. Success was defined as the ability to adequately ventilate patients after extraglottic device placement. Aspiration was defined as radiologic evidence (chest x-ray or CT scan) within 48 hours of hospital presentation.Results68 patients underwent RSA with a King LTS-D (n = 24), LMA-Supreme (n = 28), Combitube (n = 2), LMA-Unique (n = 8) and iGel (n = 6). Age ranged from 1 year to 73 years with 10 patients less than 18. RSA was successful in 64 (94%) cases; 56 (88%) were successful on first pass and 63 (98%) within 2 attempts. The RSA procedure occurred in an aircraft in 14 (21%) of cases and 71% of patients were in cervical precautions. Duration of EGD insertion prior to hospital arrival ranged from 5 to 102 minutes with an average of 34.5 minutes. Aspiration data was available for 46 patients of whom 4 (8.7%) were found to have evidence of aspiration.ConclusionOverall and first pass RSA success rates were high and aspiration rates were low in this quality assurance registry despite predictors of airway difficulty. RSA may be a reasonable alternative to RSI for prehospital airway management that merits further research.

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