Traumatic intracranial aneurysm in blunt trauma

Area of Science:

• Neuroscience
• Radiology
• Trauma Surgery

Background:

• Computed Tomography Angiography (CTA) is utilized to detect traumatic intracranial aneurysms (TICA) in blunt traumatic brain injury (TBI) patients with skull fractures or intracranial hemorrhage.
• The incidence of TICA in blunt TBI patients remains largely unknown.
• Assessing the utility of CTA in identifying these specific vascular injuries is crucial.

Purpose of the Study:

• To determine the incidence of TICA in patients with blunt TBI.
• To evaluate the diagnostic value of CTA in detecting TICA.
• To contribute to the literature regarding vascular injury screening in TBI.

Main Methods:

• A 10-year retrospective analysis (2003-2012) at a Level 1 trauma center.
• Inclusion criteria: blunt TBI patients with initial non-contrast head CT and follow-up head CTA.
• Review of Head CTAs by a single investigator to identify TICAs.

Main Results:

• 10,257 blunt TBI patients identified; 459 included in analysis.
• Mean age 47.3 years, 65.1% male, median Injury Severity Score (ISS) 16.
• Intracranial aneurysms found in 7.8% of patients; TICAs identified in 0.65%.

Conclusions:

• The incidence of traumatic intracranial aneurysm is exceptionally low (0.65%) over a decade.
• Findings suggest that routine empiric use of CTA for vascular injuries in blunt TBI may not be justified.
• Further research is needed to refine guidelines for CTA use in TBI patients.