Indications for angiography in blunt thoracic trauma

Area of Science:

• Radiology
• Vascular Surgery
• Trauma Imaging

Background:

• Blunt injury to the aorta and brachiocephalic vessels is a significant concern in trauma.
• Accurate diagnosis is crucial for timely intervention and improved patient outcomes.
• Aortography is a key diagnostic tool, but identifying optimal indications is essential.

Purpose of the Study:

• To evaluate the diagnostic utility of clinical and radiographic criteria for blunt aortic and brachiocephalic vascular injury.
• To identify the most sensitive and specific indicators for performing aortography in suspected cases.

Main Methods:

• Retrospective review of clinical charts and radiographs of 113 patients with suspected blunt injury.
• Evaluation of 8 previously described clinical criteria and 14 radiographic criteria.
• Correlation of findings with confirmed vascular injuries in 27 patients.

Main Results:

• No single clinical or radiographic sign demonstrated high specificity for vascular injury.
• Abnormal aortic outline and mediastinal widening were the most sensitive criteria.
• These sensitive criteria were also present in a significant number of patients without vascular injury.
• Displaced paraspinous lines and nasogastric tubes were identified as useful additional signs.

Conclusions:

• Diagnostic accuracy for blunt aortic and brachiocephalic vascular injury relies on a combination of findings rather than a single sign.
• Abnormal aortic outline and mediastinal widening are sensitive but not specific indicators, necessitating further investigation.
• Clinical and radiographic assessment should be comprehensive to optimize the use of aortography.