AI Article Synopsis
- This study examined the occurrence of occult pneumothorax (OP) in trauma patients and evaluated the effectiveness of chest X-rays (CXR) compared to chest CT scans in diagnosing these injuries.
- It included 1,284 patients at a trauma center, highlighting that supine CXR had low accuracy (46.7%) and sensitivity (12.7%) for diagnosing pneumothorax.
- Significant risk factors for OP identified were lung contusion and subcutaneous emphysema visible on CXR, suggesting that these indicators may warrant further imaging like CT if a chest CXR is inconclusive.
Article Abstract
Background: In patients with multiple trauma, a supine chest radiography [chest X-ray (CXR)] is preferred over a erect CXR. However, this method has limitations in detecting post-traumatic pneumothorax. The use of chest computed tomography (CT) to detect traumatic pneumothorax is well known. However, pneumothorax that is not detected before a chest CT scan is known as an occult pneumothorax (OP), and it can cause serious complications in the patient. This study sought to evaluate the frequency and risk factors for OP in trauma patients.
Methods: Patients who suffered thoracic trauma at the Level 1 Regional Trauma Center of Wonju Severance Christian Hospital between 2015 and 2022 were included in this study. All patients were at least 18 years old. The study reviewed all patients' supine CXR and chest CT images and classified them into five radiographic diagnoses: pneumothorax, rib fracture, subcutaneous emphysema, lung contusion, and pneumomediastinum.
Results: The study included 1,284 patients, all with diagnoses of pneumothorax, rib fracture, subcutaneous emphysema, lung contusion, and pneumomediastinum following supine CXR and chest CT. The patient's average age was 58.3±15.2 years. Pneumothorax diagnosis on supine CXR had the lowest accuracy, at 46.7%, and the lowest sensitivity, at 12.7%. In univariate analysis, rib fracture, lung contusion, and subcutaneous emphysema on supine CXR were all found to be statistically significant regarding traumatic OP. In multivariate analysis, the risk factors for OP were lung contusion [odds ratio (OR), 1.440; 95% confidence interval (CI): 1.115-1.860; P=0.005] and subcutaneous emphysema (OR, 25.883; 95% CI: 13.155-50.928; P<0.001) on supine CXR.
Conclusions: The lung contusion and subcutaneous emphysema in supine CXR of trauma patients indicate the presence of OP. Therefore, if chest CT cannot be performed immediately due to unstable vital signs or other circumstances, recognizing the above radiological findings of traumatic pneumothorax may be necessary.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10482646 | PMC |
| http://dx.doi.org/10.21037/jtd-23-541 | DOI Listing |
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