Multiple Mycotic Aneurysms of the Thoracoabdominal Aorta and Abdominal Aorta / 日本心臓血管外科学会雑誌

A 59-year-old man had been treated at another institution for bacterial meningitis (<i>Streptococcus pneumoniae</i>). He had severe back pain and lumbago. Computed tomographic (CT) scanning of the chest and abdomen demonstrated saccular aneurysms at the diaphragm in the descending thoracic aorta and the infrarenal abdominal aorta. An extended left posterolateral retroperitoneal incision was performed for resection of the thoracoabdominal aneurysm and replacement of an <i>in situ</i> dacron graft with rifampicin using cardiopulmonary bypass. The abdominal aneurysm was resected and replaced by an <i>in situ</i> dacron graft with rifampicin. The grafts were covered with a pedicled omental flap. The tissue culture was negative. After subsequent intravenous antibiotic therapy for 2 months, the patient was discharged without any evidence of remaining infection.

A Case of Abdominal Aortic Pseudoaneurysm due to Extracorporeal Shock Wave Lithotripsy / 日本心臓血管外科学会雑誌

Extracorporeal shock wave lithotripsy (ESWL) represents the preferred treatment for most upper ureteric and renal calculi. Complication rates associated with ESWL are low, justifying the enthusiasm and acceptance of this treatment modality. We report a case of abdominal aortic pseudoaneurysm due to ESWL. A 47-year-old man had undergone ESWL treatment for ureteric calculi since 1990. He was admitted to our hospital because of lumbar pain. Physical examination revealed a pulsatile mass in his abdomen. Abdominal CT scan showed an abdominal aortic aneurysm (5.3cm in diameter). Angiography showed a fusiform aneurysm of the infrarenal abdominal aorta. Y-graft replacement was performed after aneurysm resection. Histological examination revealed that it was a pseudoaneurysm. The patient had no history of trauma, inflammation or operation except ESWL. This is the first report of abdominal aortic pseudoaneurysm due to ESWL.

A Case of Successful Treatment of Intraoperative Pulmonary Tumor Embolism Using Pulmonary Angioscopy under Cardiopulmonary Bypass / 日本心臓血管外科学会雑誌

The case involved a 73-year-old woman who underwent surgical resection for right renal cell carcinoma extending to the inferior vena cava. During surgery the tumor thrombus disappeared from the inferior vena cava. We performed transesophageal echocardiography and detected the tumor thrombus in the right ventricle. Therefore, we immediately tried to remove the thrombus using cardiopulmonary bypass. However, we could not find the tumor thrombus in the right ventricle or in the main pulmonary artery. We used angioscopy of the pulmonary artery and detected the tumor thrombus at the orifice of the inferior pulmonary artery. The tumor thrombus was removed under direct visualization. In the event of an intraoperative pulmonary embolism, simple and safe techniques for exact and rapid diagnosis are needed. Intraoperative angioscopy allows direct visualization of the pulmonary arterial branches and appears to be very useful for detection of tumor thrombi even in emergency cases.

Study of Plasma Levels of Brain Natriuretic Peptide (BNP) in the Late Phase after Aortic Valve Replacement / 日本心臓血管外科学会雑誌

This study was designed to assess the correlation of brain natriuretic peptide (BNP) levels with cardiac function and to determine the usefulness of BNP as a prognostic marker in patients undergoing cardiac valvular surgery. We measured plasma levels of BNP in 53 patients who had undergone aortic valve replacement (AVR) or aortic and mitral valve replacement (DVR) more than 1 year earlier. These cases were divided into the aortic stenosis (AS) group and an aortic regurgitation (AR) group. Fifty-two patients were in NYHA class I, and 43 (82.7%) of them had plasma levels of BNP above the normal range. There were significant correlations between the plasma levels of BNP and ejection fraction (EF) in both the AS and AR groups (<i>r</i>=-0.460, <i>p</i><0.05; <i>r</i>=-0.529, <i>p</i><0.01). In the AR group, BNP showed significant correlations with LVMI and LVDd (<i>r</i>=-0.469, <i>p</i><0.05; <i>r</i>=0.680, <i>p</i><0.0001), whereas, in the AS group, BNP showed no significant correlation with these factors. The most remarkable finding was the development of heart failure in 3 patients whose plasma levels of BNP were over 80pg/ml, despite remaining in NYHA I during follow-up. We concluded that plasma levels of BNP in a late phase after AVR or DVR can be an excellent biochemical marker for predicting of heart failure and overall prognosis.

A Case Report of Dissecting Aneurysm(DeBakey Type II) after Aortic Valve Replacement / 日本心臓血管外科学会雑誌

A 51-year-old male, who had undergone aortic valve replacement (BS27A) 13 years ago, was admitted with a sudden onset of cerebral stroke and SVC syndrome. Computed tomography and aortography revealed aneurysmal dilatation and dissection of the ascending thoracic aorta with occlusion of the superior vena cava and the right pulmonary artery. A modified Collins procedure was performed and the postoperative course was uneventful.

The Early Repair of Postinfarction Ventricular Septal Perforation Performed with Normothermic Cardiopulmonary Bypass during Beating. A Case Report / 日本心臓血管外科学会雑誌

A 60-year-old woman underwent surgical treatment of postinfarction ventricular septal perforation (VSP) in the early phase after receiving total cardiopulmonary bypass without aortic occlusion. VSP developed four days after anterior myocardial infarction. On admission, inraaortic balloon pumping was used to obtain hemodynamic stabilization. On the day of admission, emergency total cardiopulmonary bypass was performed. VSP was closed with a Dacron felt patch positioned on the left side of the septum. The anterior wall of the left ventricle was closed with Dacron felt strips and reinforced using a Gore-Tex sheet. Postoperative hemodynamics improved significantly. Although the operation while the heart was beating was difficult technically, the total cardiopulmonary bypass time of this method was not longer than that of operations under cardioplegic arrest. Further more, the area of infarction was easily distinguished by color and bleeding. The surgery during normothermic heart beat was effective in preventing further ischemia of the myocardium. The surgical treatment of VSP in the early phase during normothermic heart beat under total cardiopulmonary bypass was considered to be more effective and safer than operations under cardioplegic arrest.

A Case Report of One-stage Operation for Combined Left Ventricular Aneurysm and Descending Thoracic Aneurysm / 日本心臓血管外科学会雑誌

Since arteriosclerosis is a general progressive disease, an aneurysm of the thoracic aorta is not infrequently complicated by ischemic heart disease. Therefore, assessment of indications of surgical treatment and selection of the surgical procedure and auxiliary procedures on the basis of accurate preoperative evaluation of ischemic heart disease are considered to be very important for improving the results of operations for thoracic aortic aneurysm. Recently. we successfully operated on a 64-year-old patient with a left ventricular aneurysm and a descending aortic aneurysm. One-stage operation was performed by a left thoracotomy approach and partial left heart bypass by draining the pulmonary artery into the femoral artery with mild hypothermia. The approach and the auxiliary procedures employed in this patient are considered to be a useful combination applicable also to one-stage operation for descending aortic aneurysm and coronary artery bypass grafting.