Infected Abdominal Aneurysm Caused by Bacteroides / 日本心臓血管外科学会雑誌

ABSTRACT

A 73-year-old man complained of pain in the right lower abdomen with hypotension. The result of abdominal computed tomography (CT) suggested a rupture of an abdominal aortic aneurysm. Emergency Y graft replacement was performed. During surgery, a perforation of about 1cm in diameter was found in the posterior wall of the abdominal aorta just above the iliac bifurcation. The patient developed postoperative complication of retroperitonitis. The cultures of blood clots collected during surgery grew <i>Bacteroides fragilis</i>, as did postoperative drainage fluid from the retroperitoneum. On the 10th day of illness, axillo-bifemoral bypass was performed and the Y graft was removed. Although continuous lavage of the retroperitoneum was performed, he did not recover from retroperitonitis and died of sepsis 2 months after surgery. Infected abdominal aneurysm is rarely caused by <i>Bacteroides</i>. We discussed the infectious route and treatment of this rare condition with a review of the literature.