Chest ultrasonography versus supine chest radiography for diagnosis of pneumothorax in trauma patients in the emergency department

To compare the diagnostic accuracy of chest ultrasonography (CUS) by frontline non-radiologist physicians versus supine chest X-ray (CXR) for diagnosis of pneumothorax in trauma patients in the emergency department.

To determine the diagnostic accuracy of individual CUS findings such as absence of lung sliding, absence of B-lines or comet-tail artefact, presence of lung point, and absence of lung pulse.

To investigate the effects of potential sources of heterogeneity such as type of CUS operator (frontline non-radiologist physicians), type of trauma (blunt vs penetrating), and type of US probe on test accuracy.

This is a protocol.

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