Hybrid vs. Conventional Surgery for Type A Aortic Dissection

With the patient under moderate hypothermia (approx. 28°C) and cardiopulmonary bypass, surgeons perform a total arch replacement using a standard 4-branched graft. After the open repair is complete, a separate, distinct covered stent graft is deployed antegradely into the descending aorta through the open distal end of the arch graft. Completion angiography confirms correct placement.

With the patient under deep hypothermic circulatory arrest (23°C-25°C) and cardiopulmonary bypass, surgeons perform a total arch replacement using an integrated hybrid prosthesis (Frozen Elephant Trunk), which consists of a vascular graft sutured to a covered stent graft. This single device is deployed antegradely into the descending aorta, and the arch vessels are then reattached to the branches of the prosthetic graft.