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Prevalence of prehospital hypoxemia and oxygen use in trauma patients.


ABSTRACT: This study estimates the prevalence of injured patients requiring prehospital supplemental oxygen based on existing recommendations, and determines whether actual use exceeds those recommendations.Prehospital oxygen use and continuous peripheral oxygen saturation measurements were prospectively collected on a purposive sample of injured civilians transported to an urban level 1 trauma center by paramedics. Structured chart review determined injury characteristics and outcomes. Supplemental oxygen administration indications were hypoxemia (peripheral oxygen saturation ? 90%), hemorrhagic shock (systolic blood pressure < 100 mmHg), or paramedic suspicion of traumatic brain injury.Paramedics enrolled 224/290 screened subjects. Median (range) age was 34 (18-84) years, 48.7% were nonwhite, 75.4% were male, and Injury Severity Score was 5 (1-75). Half (54.5%) were admitted; 36.2% sustained a penetrating injury. None underwent prehospital endotracheal intubation. Hypoxemia occurred in 86 (38.4%), paramedics suspected traumatic brain injury in 22 (9.8%), and 20 (8.9%) were hypotensive. Any indication for supplemental oxygen (107/224 [47.8%, 95%CI 41.3%-54.3%]) and prehospital administration of oxygen (141/224 [62.9%, 95%CI 56.2%-69.2%]) was common. Many (35/141 [24.8%]) received oxygen without indication.On the basis of current guidelines, less than half of adult trauma patients have an indication for prehospital supplemental oxygen, yet is frequently administered in the absence of clinical indication.

SUBMITTER: McMullan J 

PROVIDER: S-EPMC4122126 | BioStudies | 2013-01-01

REPOSITORIES: biostudies

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