Initial chest X-ray in multiple trauma patients: Still works!

Area of Science:

• Radiology
• Trauma Surgery
• Emergency Medicine

Background:

• Blunt thoracic aortic injury is a critical condition with high mortality.
• Initial chest X-ray in the emergency department can raise suspicion for this injury.
• Widened mediastinum is a known indicator, but other specific signs require identification.

Purpose of the Study:

• To identify specific chest X-ray signs, beyond widened mediastinum, indicative of blunt thoracic aortic injury.
• To improve early detection and diagnosis of traumatic aortic rupture.

Main Methods:

• Retrospective review of 208 trauma patients undergoing chest X-ray and CT scans.
• Evaluation of chest X-ray findings including mediastinal diameter, tracheal deviation, aortic arch, and aortopulmonary space.
• Correlation of X-ray findings with CT angiography results to confirm blunt thoracic aortic injury.

Main Results:

• Seven patients were diagnosed with blunt thoracic aortic injury via CT angiography.
• All seven patients exhibited a superior mediastinum diameter > 80 mm (p=0.021).
• Six patients showed obliteration of the aortic arch (p=0.0001) and aortopulmonary space (p=0.0001).

Conclusions:

• Widened mediastinum, combined with aortic arch and aortopulmonary space obliteration on initial chest X-ray, strongly suggests thoracic aortic injury.
• Patients with these combined findings should undergo immediate CT scanning for definitive diagnosis.
• Early identification of these specific radiographic signs can expedite diagnosis and management of life-threatening aortic injuries.