[Unplanned Ascending Aortic Graft Replacement at Valvuler Surgery in a Patient with Systemic Lupus Erythematosus;Report of a Case].

A 65-year-old woman with severe mitral stenosis was admitted to our hospital. She had been previously diagnosed with systemic lupus erythematosus (SLE) and had been taking prednisolone (5 mg/day) for 19 years. As SLE patients with prolonged steroid use are known to be at risk of an aortic dissection and aneurysm, femoral artery was chosen for arterial perfusion to reduce the risk of a dissection of the ascending aorta.