BACKGROUND Ventilator-associated pneumonia (VAP) is an important cause of morbidity and mortality among critically ill patients, particularly those who present with traumatic injuries. This review aims to determine whether patients with traumatic injuries who are intubated in the prehospital setting are at higher risk of developing VAP compared with those intubated in the hospital. METHODS A systematic review of Medline, Scopus, and Cochrane electronic databases was conducted from inception to January 2021. Inclusion criteria were patients with traumatic injuries who were intubated in the prehospital or hospital settings with VAP as an outcome. Using a random-effects model, the risk of VAP across study arms was compared by calculating a summary relative risk with 95% confidence intervals. The results of individual studies were also summarized qualitatively. RESULTS The search identified 754 articles of which 6 studies (N = 2,990) met the inclusion criteria. All studies were good quality based on assessment with the Newcastle Ottawa scale. Prehospital intubation demonstrated an increased risk of VAP development in two of the six studies. Among the six studies, the overall quality weighted risk ratio was 1.09 (95% confidence interval, 0.90–1.31). CONCLUSION Traumatically injured patients who are intubated in the prehospital setting have a similar risk of developing VAP compared with those that are intubated in the hospital setting. LEVEL OF EVIDENCE Systematic review and meta-analysis; Level IV.
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