A 61 year-old man was admitted with fever and chest discomfort. He had undergone aortic root replacement for annuloaortic ectasia at age 57. Computed tomography showed a pseudoaneurysm and an abscess formation around the aortic root. Prosthetic valve endocarditis was diagnosed and the underwent repeat aortic root replacement. After debridement and irrigation of the abscess cavity, the left ventricular outflow tract was reconstructed with an equine pericardium, which was rolled to form a conduit. The pericardial conduit was securely sutured to the healthy left ventricular wall and the mitral annulus. A 25 mm-Freestyle valve was then sutured to the distal end of the conduit. The previous prosthetic vascular graft was removed and Completely replaced with a new prosthesis. This method provided secure fixation of a new prosthetic valved conduit to the normal left ventricular tissue with an excellent operative visual field.

Cor triatriatum is one of the rare congenital cardiac malformations and once the diagnosis is correctly established, this is amenable to surgical correction. We reported a case of 25-year-old male of cor triatriatum, who had symptomes of easy fatiguability. The diagnosis of cor triatriatum was suspected preoperatively by two-dimensional echocardiogram at first, detecting abnormal diaphragm in the left atrium, and it was confirmed by color Doppler echocardiogram and transesophageal two-dimensional echocardiogram. Cardiac catheterization revealed high pulmonary capillary wedge pressure and the abnormal diaphragm in the left atrium was showed by the pulmonary arteriography. On the operation, the abnormal diaphragm was excised by the trans-septal approach, which had a small fenestration of 8mm in diameter at posterolateral site. Some considerations for clinical diagnosis and surgical treatment are discussed.

The surgical anatomical bypass (ANA) procedures for juxtarenal aortic occlusion (JAO) have been recently developed. However, there are some critical conditions, in which we should be cautious concerning the indications of ANA. Between 1984 and 1993 in Kurume University Hospital, 17 patients with JAO were operated upon. The most common cheifcomplaint was claudication (70.6%). Acute deterioration due to ischemia was recognized in two patients (11.8%). ANA was performed in 15 patients (88.2%) and extra-anatomical bypass (EXT) in 2 with severe calcification of the aorta (11.8%). Hospital deaths occured in three patients with ANA (17.6%), whose background included two acute deterioration and one cerebral infarction with hemiplegia. As an early postoperative complication, acute renal failure occurred in one patient and subileus in two. In the presence of poor general condition, acute deterioration, or severe aortic calcification, the EXT-procedure is the choice of surgical treatment for JAO.

We present the outcome of surgical management for thoracoabdominal aneurysms in 27 patients during the past 22 years. Ischemia of visceral organs was successfully prevented by axillo-femoral temporary bypass using a 10mm PTFE graft with an 8mm branch for main visceral vessels and partial extracorporeal circulation perfusing visceral organs. No other significant problems were encountered. Paraplegia occurred in 5 patients (18.5%). Three of them had received reconstruction of the intercostal arteries. Patients treated by spinal fluid drainage developed no paraplegia. The Crawford inclusion and Piehler bypass techniques were useful in reconstructing the main visceral vessels. Two patients died of ruptured proximally anastomosed thoracic aorta after a thromboexclusion technique. Early death occurred in three patients and late death in one.

Between 1961 and 1994, 121 patients our hospital were treated by conservative and surgical therapy for acute (67 patients) and chronic (54 patients) type B aortic dissection. Among the acute type B aortic dissections, two patients died before operation and 4 patients underwent surgical treatment in the acute phase. The false channel was occluded due to thrombosis in 30 patients. 9 in 31 patients with patent false channels required surgical therapy in the chronic phase. 46 of 54 patients with chronic type B aortic dissection underwent surgical treatment and 9 other patients were not operated on because of the false channel was not enlarged, nearly thrombosed type and refusal to operate. The long-term survival rate appeared to be better in cases acute closing aortic dissection than in cases of aortic dissection with patent false channels. Among the 54 patients who required surgical treatment in the chronic phase, there were eight early deaths (13.3%). Among chronic phase surgical cases, the long term survival rate appeared to be similar to that in type B aortic dissections treated by conservative therapy. Therefore, we consider that type B aortic dissections with acutely thrombotic false channels should be treated by medical therapy, while type B aortic dissection with patent false channel should be treated surgical treatment in the subacute phase or early chronic phase.

A 59-year-old man was admitted for treatment of Stanford type B acute dissecting aneurysm with acute renal failure. He had begun hemodialysis one month after onset, because digital subtraction angiography (DSA) revealed that the truelumen was narrowed by a dilated false channel just above the renal artery. Initially axillo-femoral bypass was performed to treat renal failure, and the patients was easily weaned from hemodialysis. Eight months after the first operation, descending thoracic aorta replacement was performed. The patient is doing well one year after operation. In conclusion, axillo-femoral bypass yielded good results because our patient recovered from renal failure and could undergo radical operation safely. Axillo-femoral bypass allowed evaluation of the hemodynamic study before radical operation.

A 64-year-old woman with chest pain and intermittent claudication was admitted to our hospital. Unstable angina pectoris and arteriosclerosis obliterans (ASO) of both leg were diagnosed. Angiography indicated total occlusion of the right external iliac artery and severe stenosis of the left external iliac artery, in addition to significant stenoses of the three major coronary arteries. The ankle pressure index was 0.49 in her right leg, and 0.74 in the left. Because coronary stenting was unsuccessful, emergency coronary artery bypass grafting was performed prior to arterial reconstruction of the lower extremities. To prevent exacerbation of limb ischemia during cardiopulmonary bypass (CPB), selective limb perfusion was performed with a 14-gauge intravenous catheter inserted into the right superficial femoral artery. There were no complications related to limb ischemia during or after the operation. Selective limb perfusion was considered to be useful to prevent limb ischemia during CPB in patients with ASO of the legs.

We report a case of successful anatomical reconstruction with omentopexy of an infected abdominal aortic aneurysm (AAA) in a patient with a previous history of coronary artery bypass grafting with the right gastroepiploic artery. A 60-year-old man was referred to our institute because of fever and abdominal pain during hemodialysis for chronic renal failure. Antibiotic therapy was started after computed tomography revealed an infected abdominal aortic aneurysm. After infection control, surgical treatment was scheduled. At surgery, left axillo-bifemoral bypass was performed first, because it was unclear whether the omentum was large enough for omentopexy. At laparotomy, adequate omentum and infective AAA were confirmed. AAA repair using a rifampicin-soaked graft, and omentopexy were performed. Enterobacter aerogenes was detected from the resected aortic wall. After the operation, intravenous antibiotic was used for 25 days until CRP was normalized. One year follow-up showed no sign of re-infection.

We report a case of chronic mesenteric ischemia associated with severe aortic valve regurgitation and stenosis (ASR). The patient was a 76-year-old man who had been given a diagnosis of ASR in his 40s. He gradually developed heart failure and chronic kidney disorder due to deterioration of ASR. He had started hemodialysis 1 year before admission and had complained of abdominal pain after meals and weight loss during that period. He was admitted to the Department of Cardiology in our hospital for evaluation of ASR. Severe ASR with low output syndrome (C. I. 2.00 L/min/m²) were confirmed by cardiac catheter examination. In addition, abdominal angiography revealed total occlusion of the superior mesenteric artery (SMA) and severe stenosis of the celiac artery (CA). We considered that low cardiac output due to severe ASR had exacerbated the mesenteric ischemia. We performed AVR and abdominal aorta-SMA bypass at the same time to prevent acute mesenteric ischemia in the perioperative period. The combination of valvular disease and CMI is very rare. This is the first report in Japan of simultaneous valve replacement and mesenteric artery revascularization.

We herein report on a case in which we conducted bypass surgery for occlusion of a left axillary artery aneurysm with ischemic symptoms 21 years after the contraction of Kawasaki disease and achieved symptomatic improvement. The case involved a 22-year-old man who had been suffering from Kawasaki disease since the age of one. He had been undergoing antiplatelet therapy for bilateral axillary artery aneurysms by orally taking aspirin for 20 years. He suffered from symptoms of upper limb ischemia 21 years after receiving a diagnosis of peripheral aneurysms and occlusion of a left axillary artery aneurysm upon 3DCTA. We conducted aneurysmotomy, plication, and bypass surgery between the axillary and brachial arteries via the autologous vein. Pathological examination revealed due to the formation of atheroma in the tunica intima and disarrangement of the layer structure in the tunica media : thickening of the tunica media was partially observed. His fatigue upon exertion of his left upper extremity remarkably improved following surgery. Although peripheral aneurysms associated with Kawasaki disease are rare, as seen in this case, peripheral arterial disease remains and progresses even after long periods of time. It is believed necessary to carry out long term follow-up and examine the approaches to therapy including surgery in accordance with the site and degree of the disease.