Comparison of Transperitoneal and Extraperitoneal Approach for Infrarenal Aortic Aneurysm Repair / 日本心臓血管外科学会雑誌

In the last decade, 78 patients received operations for abdominal aortic aneurysms with a transperitoneal approach (TP) while in 82 patients we used an extraperitoneal approach (EP). Forty-two patients in the TP group and 40 in the EP group who required no concurrent repair of the inferior mesenteric artery, renal artery or lower extremity arteries were compared. There was no difference between the two groups in mean operative time, mean amount of intraoperative bleeding or mean amount of required homologous blood transfusion. The mean interval after surgery to beginning peroral alimentation and the mean duration of postoperative fluid therapy were significantly shorter in the EP group than in the TP group. An extraperitoneal approach for abdominal aortic reconstruction is preferable for an early postoperative recovery.

Temporary External Bypass during Abdominal Aortic Aneurysm Operation: Two Patients with Heart Failure of Aortic Dissection / 日本心臓血管外科学会雑誌

We report two cases of an abdominal aortic aneurysm, one with congestive heart failure, and the other with a dissecting aortic aneurysm (type IIIb), who underwent an aorto-bifemoral bypass operation under a temporary external axillofemoral bypass. In one patient (Case 1, a 74-year-old male), who had an abdominal aortic aneurysm with congestive heart failure due to aortic valve insufficiency and stenosis, perioperative transesophageal echocardiography demonstrated that, with a temporary external axillofemoral bypass, the regurgitant doppler signal was unchanged during the cross-clamping period of the abdominal aorta. In the other patient (Case 2, a 71-year-old male), who had a dissecting thoracoabdominal aortic aneurysm with the lower abdominal aorta having a true aneurysm formation, the transesophageal echocardiography demonstrated that, with a temporary external axillofemoral bypass, the false lumen of the dissecting thoracic aneurysm had no change in size during the cross-clamping period of the abdominal aorta. Thus, a temporary external axillofemoral bypass might avoid any unfavorable hemodynamic effect during and after the abdominal aortic clamping in patients suffering from an abdominal aortic aneurysm with cardiovascular complications.