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Abstract
Background
Trauma is a leading cause of death in the United States. Ultrasound use in the prehospital environment has the potential to change trauma management. Although ultrasound use for prehospital trauma is increasing, the role of this modality is not clearly defined.
Objectives
We examined the use of prehospital ultrasound (PHUS) for trauma patients and the use by different provider types. Specific factors of interest were if prehospital ultrasound has been shown to improve providers’ ability to recognize conditions that can be managed in the prehospital setting, treat these conditions, change transport destination, or improve overall mortality rates for trauma patients.
Methods
We searched MEDLINE/PubMed, EBSCOhost, Cochrane Library, and Embase medical literature databases for articles that addressed our outcomes. Abstracts and articles were examined and studies that did not specifically evaluate ultrasound in the prehospital setting for trauma and duplicates were eliminated. Studies included in this comprehensive review were assessed for the use of ultrasound in the prehospital setting to aid in the diagnosis, treatment, and transport of trauma patients. We also conducted an analysis of bias in the included articles. Due to the large heterogeneity in the included studies, no meta-analysis could be performed.
Results
Sixteen studies were identified comprising 3,317 patients. One study evaluated Emergency Medical Services (EMS) professionals as the ultrasound operator while five studies involved mixed practitioners and ten studies involved only physicians. Diagnostic accuracy was similar amongst physicians and mixed practitioners with no studies reporting PHUS accuracy for EMS providers alone. Seven studies evaluated treatment and transport impact of PHUS though the variables measured were inconsistent and results varied by protocol and outcomes measured. There were no studies that evaluated PHUS and its impact on patient mortality.
Conclusion
Ultrasound use in the prehospital setting for trauma is feasible and demonstrates potential. However, the evidence in the medical literature mainly consists of prospective observational studies of physicians utilizing ultrasound for trauma in a HEMS setting. Further scientific research must be undertaken to firmly establish the role of prehospital ultrasound in trauma management by all types of EMS providers.