How well does the extended Focused Assessment with Sonography in Trauma (eFAST) exam detect pneumothoraces, pericardial effusions, and intra-abdominal free fluid in injured patients?

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Why is this study important?

The extended Focus Assessment with Sonography in Trauma (eFAST) is a rapid, non-invasive, and inexpensive method of identifying intraperitoneal and intrathoracic injuries including pneumothorax (PTX), pericardial effusion (PCE), and intra-abdominal free fluid (FF). Early detection of these findings can expedite lifesaving interventions. Studies of eFAST accuracy show varying specificities and sensitivities. Through a systematic review, this study highlights strengths and limitations of the eFAST.

Which, if any, threats to validity are most likely to have an impact on the results and how?

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