Chronic Mesenteric Ischemia after a Type A Aortic Dissection Repair.

A 57-year-old male patient who underwent an open hemiarch repair with a femoral-femoral crossover bypass and right lower extremity fasciotomies for an acute Type A aortic dissection with limb ischemia presented 5 weeks' postrepair with a 20-pound weight loss due to intermittent hemodynamic collapse of the dissection flap over the origin of the superior mesenteric artery. This case highlights the challenges a dissection flap can cause after an urgent Type A aortic dissection repair.