[Hybrid repair of thoracoabdominal aortic aneurysm in high-risk patients using a quadrifurcated graft].

Surgical treatment for thoracoabdominal aortic aneurysm is still challenging and is associated with a high risk of paraplegia. Hybrid repair with stent graft insertion for the thoracoabdominal aorta excluding the branches of the lumbar and visceral arteries and bypass grafting to the visceral branches has been introduced as a less invasive treatment that reduces the risk of paraplegia. For hybrid repair, it is important to have appropriate management of the revascularized grafts to the 4 visceral arteries with sufficient inflow. We have recently adopted a knitted quadrifurcated graft applied inversely from the abdominal aorta or the iliac artery to the 4 visceral arteries; the celiac, superior mesenteric, and bilateral renal arteries. To date, we have used the graft in hybrid repair of thoracoabdominal aortic aneurysm in 2 high-risk elder patients who had disseminated intravascular coagulopathy and severe renal failure, respectively. We found that a knitted quadrifurcated graft was easy to handle and useful for reducing the number of anastomoses, which were expected to shorten the operation time. Postoperative courses were uneventful without paraplegia in either patient. Postoperative computed tomography showed excellent patency of the inversely applied quadrifurcated graft without any endoleak or migration in the thoracoabdominal stent. In conclusion, revascularization of 4 visceral arteries using a quadrifurcated graft should be considered a preferable option in hybrid treatment for thoracoabdominal aortic aneurysm.