Head/Neck and Thoracic Vascular Trauma Including BTAI

63.1Definition and presentation

Head, neck, and thoracic vascular trauma encompasses blunt thoracic aortic injury (BTAI), blunt cerebrovascular injury (BCVI), penetrating neck vascular trauma, and subclavian artery injuries. BTAI is a deceleration injury classically concentrated at the thoracic aortic isthmus, carrying a high risk of progression or rupture SVS 2011 · Demetriades 2009 · BTAI Concepts 2020. Penetrating neck trauma spans three anatomic zones: zone I extends to the thoracic inlet, zone II occupies the mid-neck, and zone III reaches the skull base Joint Trauma System 2017 · BCVI 2021. Clinical presentation ranges from incidental findings in stable polytrauma patients to life-threatening hemorrhage or tamponade requiring immediate procedural control WSES 2025.

63.2Initial assessment and diagnosis

Initial evaluation in suspected thoracic vascular trauma incorporates targeted FAST (including a subxiphoid pericardial window) and supine chest radiography to identify tamponade or major intrathoracic blood WSES 2025 · Joint Trauma System 2017 · SVS 2011. In stable patients, computed tomography angiography (CTA) confirms or excludes injury, assigns the BTAI grade, and defines the anatomy for endovascular planning BTAI 2023. High-energy thoracic spine fractures share the deceleration mechanism of BTAI and prompt dedicated aortic CTA Thoracic Spine 2021.

BCVI screening uses modified Denver and Memphis criteria:

• Mechanism of injury
• Cervical spine fracture
• Basilar skull fracture
• Severe facial fracture
• Neurological signs
• Horner syndrome Joint Trauma System 2017 · BCVI Overscreen 2023

63.3Medical management and impulse control

Prehospital resuscitation incorporates balanced blood products, and prehospital plasma improves 30-day survival in patients at risk for hemorrhagic shock PAMPer 2018. Impulse control is the primary temporizing medical therapy for BTAI between diagnosis and definitive repair. Short-acting antihypertensives or beta-blockers reduce aortic wall stress, targeting a heart rate of 60 to 80 beats per minute SVS 2011 · Cochrane 2019 · TEVAR Effectiveness 2023 · BTAI Concepts 2020. The intensity of blood-pressure reduction is adjusted downward or suspended for competing hypotensive injuries or intracranial perfusion limits BTAI 2023. For non-occlusive low- and intermediate-grade BCVI and vertebral artery injuries, low-dose aspirin or anticoagulation is the default medical therapy, with agent selection modulated by the bleeding risk of concomitant injuries Joint Trauma System 2017 · BCVI 2021.

63.4Treatment selection and thresholds

Operative or endovascular intervention depends on hemodynamic stability, the anatomic zone, and the specific injury grade. Hospital setting and institutional endovascular volume influence outcomes after TEVAR for blunt thoracic aortic injury, favoring management at, or transfer to, higher-volume centers Cabot 2025. Penetrating and zone-specific cervical injuries are managed selectively based on CTA findings rather than mandatory zone-based exploration Joint Trauma System 2017 · BCVI 2021. Emergency thoracotomy is reserved for penetrating thoracic trauma with signs of life within minutes of arrival or in the trauma bay WSES 2025 · SVS 2011.

Decision workflow for blunt thoracic aortic injury:

1. Determine hemodynamic status. Unstable patients or those with active rupture physiology require urgent operative or endovascular control.
2. Grade the lesion. Grade 1 (intimal tear) and Grade 2 (intramural hematoma without external contour change) are managed conservatively with impulse control and close interval CTA surveillance, reserving selective or delayed TEVAR for radiographic progression; minimal aortic injury is increasingly managed nonoperatively.
3. Determine anatomic suitability for TEVAR. TEVAR is the default modality for grade 3 and 4 injuries due to lower perioperative mortality and paraplegia rates compared with open repair Cochrane 2019 · Demetriades 2009. Open repair is reserved for anatomically unsuitable cases or device failure.
4. Select timing for stable grade 3 BTAI. Repair is deferred for hours to days under tight impulse control to permit stabilization of competing injuries (traumatic brain injury, pulmonary, abdominal, or orthopedic hemorrhage), provided imaging confirms no progression SVS 2011 · BTAI Concepts 2020.

63.5Anatomic interfaces and operative execution

Left subclavian artery coverage during TEVAR is frequently necessary to obtain an adequate proximal landing zone at the arch-isthmus interface. Selective revascularization is performed when dictated by arm ischemia or vertebrobasilar perfusion risks SVS 2011 · BTAI 2023. Spinal cord ischemia and paraplegia rates are lower after TEVAR than after historical open repair, with the residual risk determined by coverage length, periprocedural blood pressure, and collateral circulation TEVAR Effectiveness 2023.

Penetrating vertebral artery transection in cervical spine trauma presents with rapid hemorrhage; management involves direct pressure, packing, or balloon tamponade, alongside rapid transition to endovascular or operative control Tannoury 2015. In blunt vertebral artery injury with unstable cervical spine trauma, surgical spine fixation mitigates ongoing arterial injury from unstable bony elements, requiring careful coordination with the antithrombotic regimen Vertebral Artery 2020. Transcarotid artery revascularization (TCAR) provides a feasible endovascular bailout for focal blunt carotid injuries in select patients, though outcome data remain limited TCAR 2023.

In penetrating neck trauma, airway control acts as a precondition for vascular control. Expanding hematomas, venous hemorrhage, and anatomic distortion require securing the airway prior to definitive vascular exposure across the three cervical zones Joint Trauma System 2017 · BCVI 2021.

63.6Surveillance and long-term follow-up

Post-TEVAR follow-up mandates serial CTA at defined intervals to monitor for endoleak, device migration, and post-implant aortic dilatation SVS 2011 · BTAI TEVAR 2022. Surveillance intervals taper in stable patients, and long-term outcomes show preserved health-related quality of life with low rates of late device-related reintervention TEVAR Effectiveness 2023.

Follow-up for conservatively managed grade 1 BTAI uses interval CTA to detect progression, which triggers definitive repair SVS 2011. Low-grade BCVI and vertebral artery injuries are evaluated with interval imaging over days to weeks; because low-grade injuries often stabilize or improve angiographically, this imaging guides the duration of antithrombotic therapy and confirms lesion stability BCVI 2021 · VAI 2025.

63.7Areas of controversy

The optimal timing of TEVAR for stable grade 3 BTAI relies on evolving evidence rather than established trials. Delayed-repair pathways are widely used to permit concurrent injury stabilization, but randomized comparative data defining the safest delay interval do not yet exist SVS 2011 · Demetriades 2009 · BTAI Concepts 2020.

Screening thresholds for blunt cerebrovascular injury also remain unsettled. Broad application of the modified Denver criteria in low-mechanism trauma populations produces low-yield overscreening, driving ongoing efforts to calibrate threshold triggers to balance stroke prevention against the required imaging burden Joint Trauma System 2017 · BCVI Overscreen 2023.