A Case of Spontaneous Ascending Aortic Rupture Which Was Difficult to Distinguish from Stanford Type A Acute Aortic Dissection / 日本心臓血管外科学会雑誌

A 77-year-old man was admitted to our hospital with sudden anterior chest pain followed by shock. An echocardiography showed enlargement of the sinus of Valsalva, severe aortic regurgitation and pericardial effusion. A chest CT scan showed a crescent sign in the ascending aorta. The preoperative diagnosis was a ruptured Stanford type A acute aortic dissection and an emergency operation was performed. In the operative findings, a bloody pericardial effusion, a hematoma around the ascending aorta and a tear (less than 2 cm) of the ascending aorta just distal area of the sinotubular junction were observed. In this case, since the enlargement of the sinus of Valsalva and the severe aortic regurgitation were observed, we performed a replacement of the ascending aorta including the aortic root with an artificial vascular graft (J graft 28 mm) and a biological valve (Magna EASE 25 mm). The pathologic examinations revealed a rupture of ascending aorta in all layers and a hematoma outside the adventitia. The pathologic diagnosis showed a spontaneous aortic rupture. The postoperative course was good and he was discharged 1 month after the surgery. A spontaneous aortic rupture is defined as an aortic rupture without a trauma, an aneurysm or a dissection. It is rare but fatal and it is said that surgical treatment is necessary. We report a successful surgical case of the spontaneous aortic rupture which was difficult to distinguish from a Stanford A type acute aortic dissection.

A Case of Tricuspid Leaflet Augmentation for Severe Secondary Tricuspid Regurgitation / 日本心臓血管外科学会雑誌

A 71-year old woman, who underwent direct closure of an atrial septal defect with mild tricuspid regurgitation (TR) 18 years previously, suffered terminal cardiac failure with extreme cardiomegaly, mitral regurgitation and severe TR. Medical treatment gradually became ineffectual and we decided to perform surgical therapy. Mitral annuloplasty with a prosthetic ring, tricuspid valve repair, plications of extended bilateral atrium walls and epicardial ventricular pacemaker implantation were performed. In tricuspid valve repair, anterior tricuspid leaflet was augmented by use of glutaraldehyde-preserved autologus pericardial patch and tricuspid annuloplasty with addition of a slightly larger prosthetic ring. Atrio-ventricular regurgitations disappeared and she was discharged 63 days after the operation. Valve extension is a very effective technique to treat severe secondary TR, and long term follow-up is necessary.

Surgical Treatment of Pulmonary Artery Aneurysm Thirty-Eight Years after an Operation for Atrial Septal Defect / 日本心臓血管外科学会雑誌

Pulmonary artery aneurysm (PAA) may be associated with congenital shunt disease such as patent ductus arteriosus, and its frequency and management are often controversial. We report successful surgical treatment of PAA following an operation for atrial septal defect (ASD). The patient was a 47-year-old woman who underwent closure of ASD at the age of 9. When she was investigated because of thyroid tumor, enlargement of her main pulmonary artery was pointed out and she was admitted to our hospital. Several examinations revealed a diagnosis of pulmonary valve insufficiency and 70mm PAA with dilatation extending to both proximal arteries. We performed replacements of pulmonary valve and pulmonary artery with a bioprosthetic valve and T-shaped graft. The patient is doing well 2 years after operation.

Long-Term Results after Prosthetic Bypass Surgery for Chronic Limb Ischemia / 日本心臓血管外科学会雑誌

We evaluated long-term results of 126 consecutive bypass surgeries for chronic limb ischemia including 54 aorto-femoral (AF), 26 femoro-femoral crossover (FF), 7 axillo-femoral (AxF), and 39 femoro-above the knee popliteal (FP) bypasses. Patients who had undergone FF bypasses were significantly older than those who received AF bypasses (<i>p</i><0.01). Preoperative ankle brachial pressure indices (ABI) of the AxF and FF patients were significantly lower than those of AF patients (<i>p</i><0.05). Compared with AF patients, the AxF and FF groups included significantly higher percentages of Fontaine III and IV limbs treated by limb salvage surgery (<i>p</i><0.05). The cumulative graft patency rates 5 years after AF, FF, and FP bypasses were 94.7%, 91.3%, and 64.3%, respectively. In the FP group, patients with intermittent claudication before surgery showed a 5-year graft patency rate of 82.5%, while that in patients who underwent surgery for limb salvage was 43.3%. The secondary graft patency rates 5 years after AF, FF, and FP bypasses were 94.6%, 91.3%, and 83.3%, respectively. All patients whose bypass grafts were occluded were male and were smokers. Poor run-off and insufficient anticoagulation therapies were also associated with graft occlusion. Two of the 12 patients who developed graft occlusion underwent limb amputation.

A Case of Aortic Root Remodeling for Aneurysm of the Noncoronary Sinus of Valsalva / 日本心臓血管外科学会雑誌

We report a case of aneurysm localized to the noncoronary sinus of Valsalva with moderate aortic regurgitation (AR). The patient was a 49-year-old woman who had been suspected to have some kind of connective tissue disorders. She underwent an aortic root remodeling procedure to replace the isolated, unruptured and extracardiac aneurysm and the ascending aorta. Postoperative angiogram showed no aneurysm and improved AR. This procedure was able to preserve her own aortic valve and normal sinuses of Valsalva and enable her to obtain better quality of life, although progression of the enlargement of the aorta or AR requires careful follow-up.