Joseph C Broderick1, Fabiola Mancha2, Brit J Long1,3, Joseph K Maddry1,2,3,4, Kevin K Chung3, Steven G Schauer1,2,3. 1. Brooke Army Medical Center, JBSA Fort Sam Houston, San Antonio, TX. 2. US Army Institute of Surgical Research, JBSA Fort Sam Houston, San Antonio, TX. 3. Uniformed Services University of the Health Sciences, Bethesda, MD. 4. 59 Medical Wing, JBSA Lackland, San Antonio, TX.
Abstract
Acute lung injury (ALI) and acute respiratory distress syndrome (ARDS) are known complications of injuries in combat casualties, but there has been no review characterizing them. This scoping review aims to map the combat trauma-related ALI/ARDS literature and characterize these conditions in the military population. DATA SOURCES: Pubmed was searched from 1969 to April 2022. STUDY SELECTION: Studies were included if they examined ALI/ARDS or related entities (blast lung injury [BLI], transfusion-related acute lung injury, and acute respiratory failure) in combat trauma patients in the military (U.S. or allied forces). DATA EXTRACTION: Study years, design, location, number of patients, target outcomes as related to ALI/ARDS or related entities, and results were collected. DATA SYNTHESIS: The initial search yielded 442 studies, with 22 ultimately included. Literature on ALI/ARDS comes mostly from retrospective data and case studies, with limited prospective studies. The incidence and prevalence of ALI/ARDS range from 3% to 33%, and mortality 12.8% to 33%. BLI, a known antecedent to ALI/ARDS, has an incidence and mortality ranging from 1.4% to 40% and 11% to 56%, respectively. Risk factors for ALI/ARDS include pulmonary injury, inhalation injury, blunt trauma, pneumonia, higher military injury severity score, higher injury severity score, higher fresh frozen plasma volumes, higher plasma and platelet volumes, the use of warm fresh whole blood, female sex, low blood pressure, and tachycardia. Literature has demonstrated the effectiveness in transportation of these patients and the utility of extracorporeal life support. CONCLUSIONS: ALI/ARDS incidences and prevalences in modern conflict range from 3% to 33%, with mortality ranging from 12.8% to 33%. ALI/ARDS has been associated with injury severity metrics, injury type, resuscitative fluid amount and type, vital signs, and patient demographics. Studies are limited to mostly retrospective data, and more data are needed to better characterize these conditions.
Acute lung injury (ALI) and acute respiratory distress syndrome (ARDS) are known complications of injuries in combat casualties, but there has been no review characterizing them. This scoping review aims to map the combat trauma-related ALI/ARDS literature and characterize these conditions in the military population. DATA SOURCES: Pubmed was searched from 1969 to April 2022. STUDY SELECTION: Studies were included if they examined ALI/ARDS or related entities (blast lung injury [BLI], transfusion-related acute lung injury, and acute respiratory failure) in combat trauma patients in the military (U.S. or allied forces). DATA EXTRACTION: Study years, design, location, number of patients, target outcomes as related to ALI/ARDS or related entities, and results were collected. DATA SYNTHESIS: The initial search yielded 442 studies, with 22 ultimately included. Literature on ALI/ARDS comes mostly from retrospective data and case studies, with limited prospective studies. The incidence and prevalence of ALI/ARDS range from 3% to 33%, and mortality 12.8% to 33%. BLI, a known antecedent to ALI/ARDS, has an incidence and mortality ranging from 1.4% to 40% and 11% to 56%, respectively. Risk factors for ALI/ARDS include pulmonary injury, inhalation injury, blunt trauma, pneumonia, higher military injury severity score, higher injury severity score, higher fresh frozen plasma volumes, higher plasma and platelet volumes, the use of warm fresh whole blood, female sex, low blood pressure, and tachycardia. Literature has demonstrated the effectiveness in transportation of these patients and the utility of extracorporeal life support. CONCLUSIONS: ALI/ARDS incidences and prevalences in modern conflict range from 3% to 33%, with mortality ranging from 12.8% to 33%. ALI/ARDS has been associated with injury severity metrics, injury type, resuscitative fluid amount and type, vital signs, and patient demographics. Studies are limited to mostly retrospective data, and more data are needed to better characterize these conditions.
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