Emergency stent-graft placement in thoracic aortic dissection and evolving rupture

Area of Science:

• Cardiovascular Surgery
• Endovascular Interventions
• Aortic Diseases

Background:

• Type B aortic dissection with extraaortic leakage has high mortality despite timely diagnosis and treatment.
• Conventional emergency surgical repair carries a 29%-50% mortality rate.
• Endovascular stent-graft placement presents a potential life-saving alternative for impending or evolving rupture.

Purpose of the Study:

• To evaluate the efficacy and safety of emergency endovascular stent-graft placement for type B aortic dissection with leakage.
• To compare short-term and 1-year outcomes of endovascular repair versus conventional therapy.

Main Methods:

• A comparative study involving 11 patients undergoing emergency endovascular stent-graft placement.
• Historic-matched control group receiving conventional therapy for acute type B aortic dissection with periaortic hemorrhage.
• Outcomes assessed included procedural success, morbidity, mortality, and aortic integrity.

Main Results:

• Emergency stent-graft placement was technically successful, halting leakage and reconstructing the dissected aorta without periprocedural morbidity.
• No deaths occurred in the stent-graft group at a mean follow-up of 15 months.
• Four deaths were observed in the conventional treatment group (p < 0.05).

Conclusions:

• Endovascular stent-graft repair is a viable and effective nonsurgical option for type B aortic dissection with leakage and rupture.
• Successful implementation requires appropriate logistical support and specialized expertise.
• This approach offers significant survival benefits over conventional management.