Critical decisions in trauma of the thoracic aorta

Endovascular Therapy And Controversies In The Management Of Vascular Trauma

Aim:

To review the advent of endovascular treatment of vascular injuries and its controversies.

Methods:

Literature review over the past 13 years using the PubMed search engine.

Results:

The management of vascular trauma has changed dramatically over the last decade. This is mainly due to the advent of advanced endovascular techniques and technologies. There are, however, a limited number of publications with a correspondingly small number of patients and lack of long-term follow-up. In this article, we discuss the injuries to different vessel groups and their respective endovascular approaches. Of the literature available, the endovascular management of aortic injuries still holds the most experience and has shown favorable results.

Conclusion:

Endovascular management of vascular injuries is a new addition to the armamentarium of the surgeon. The fact that it is minimally invasive is a major advantage and the published data are encouraging. However, in order to determine which anatomical sites and circumstances are most appropriate for this method versus open surgery, more reports are necessary.

Thoracic and neck trauma. Part three

Previous parts to this series on thoracic and neck trauma discussed the anatomy and physiology of the thorax, assessment and initial nursing interventions, imaging and adjuncts to diagnosis. Part 2 describes specific chest wall and lung injuries, types of pneumothoraces and their diagnosis and management. This section, part 3 of 4, discusses other types of thoracic injuries and their management, such as trauma to the diaphragm and heart.

Thoracic aortic and great vessel trauma and its management

Interventional radiologists (IRs) now play a major role in the management of thoracic aortic and great vessel trauma. The recent availability of a wide range of stent grafts able to treat vessels from 3 to 46 mm in diameter is clearly a significant contributor to this change. Stent grafts can now treat the majority of incomplete aortic injuries with much lower morbidity and mortality than open surgery. Short- to medium-term follow-up is encouraging, but the long-term durability is unknown, and close monitoring of these patients must continue. In great vessel trauma, stent grafts are a useful adjunct to balloon tamponade, embolization, and bare stents. As a result, a wide range of head neck and upper limb vascular injuries can be managed with less local trauma, blood loss, and physiological stress. The increased involvement of IR in the management of vascular trauma is not simply the result of technological advances. IRs have increasingly made themselves available to carry out these emergency procedures. IRs should assist in the development of trauma protocols and management algorithms that involve endovascular expertise early in the assessment of the major trauma patient.

Placement of endovascular stent-grafts for emergency repair of acute traumatic aortic rupture: a single-centre experience

The aim of this retrospective study was to evaluate mid- and long-term results of endovascular stent-graft placement for emergency repair of acute traumatic thoracic aortic rupture. From 1996 through 2005, 22 consecutive patients (mean age: 38.7 years) underwent endovascular repair of acute traumatic thoracic aortic rupture located at the aortic isthmus in most cases. All patients were at high surgical risk due to severe associated injuries. The endografts were inserted via femoral or iliac artery access under fluoroscopic guidance. Follow-up was performed postinterventionally, at 6 and 12 months and yearly thereafter, and included clinical examination and computed tomography (CT) scans. Technical and clinical success rates were 86.3%. Mean follow-up was 31.7 months. Three patients developed early type I endoleak due to the inability of the rigid graft to adapt to the curved aortic contour. In two of them conversion to open surgery was necessary. One patient had late type I endoleak and died. No other complications were observed. The outcome was successful in most patients. The mid- and long-term results of our current study are promising. However, early type I endoleak represents a problem, especially in adolescent patients with a marked curvature of the aortic arch.

Stent-Graft Repair for Acute Traumatic Thoracic Aortic Rupture

Traumatic rupture of the thoracic aorta is potentially life-threatening and leads to death in 75 to 90 per cent of cases at the time of injury. In high-risk patients, as traumatic injuries of the aorta combine with multiple associated injuries, endoluminal repair is now reported as a promising therapeutic strategy with encouraging results. This study determined the outcome of patients with traumatic thoracic aortic injury treated endovascularly during the past 7 years at our institution. Thirteen patients, 11 males and 2 females (mean age, 39 years; range, 19–82), with traumatic rupture of the otherwise unremarkable descending aorta (10 acute, 3 chronic), out of a series of 64 endovascular thoracic stent-graft procedures, were treated by implantation of Talent (n = 8), Vanguard (n = 5), and Excluder (n = 2) self-expanding devices between January 1996 and August 2003. The immediate technical success rate was 92 per cent (12/13). One patient showed a proximal endoleak type I, which was treated successfully by an additional stent-graft procedure. Secondary success rate was 100 per cent. The mortality rate was 0 per cent. Two additional stent-graft procedures were performed due to type I endoleaks after 18 and 28 months. There was no other intervention-related morbidity or mortality during the mean follow-up time of 26.4 months (range, 6–86). Endovascular stent-graft repair of traumatic thoracic aortic injuries is a safe, effective, and low-morbidity alternative to open thoracic surgery and has promising midterm results.