Abstract
Introduction: The objective of this study was to compare the diagnostic performance of ultrasonography (US) and chest radiography for detecting pneumothorax in patients with trauma using a meta-analytic approach. Methods: PubMed, Embase, and the Cochrane Library were systematically searched to identify eligible studies until March 2023. The diagnostic performance of US and chest radiography was assessed using sensitivity, specificity, positive likelihood ratio (PLR), negative likelihood ratio (NLR), diagnostic score, diagnostic odds ratio (DOR), and area under the receiver operating characteristic curve (AUC). Results: Overall, 21 studies involving 4,087 patients with trauma were included. The overall sensitivity, specificity, PLR, NLR, diagnostic score, DOR, and AUC of US for detecting pneumothorax were 0.83, 0.99, 73.72, 0.17, 6.06, 427.80, and 0.99, respectively. The corresponding values of chest radiography for detecting pneumothorax were 0.37, 1.00, 175.59, 0.63, 5.63, 279.97, and 0.86. US was associated with a higher sensitivity (ratio: 2.24; 95% confidence interval [CI]: 1.70–2.95; p < 0.001) or AUC (ratio: 1.15; 95% CI: 1.11–1.19; p < 0.001) and lower NLR (ratio: 0.27; 95% CI: 0.17–0.43; p < 0.001) compared with chest radiography. Conclusion: Lung US was associated with better diagnostic performance than chest radiography for detecting pneumothorax in patients with trauma.
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