Syuichi Kozawa

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BACKGROUND Blunt trauma-induced aortic injury traditionally has been treated with early open surgical repair. However, recently endovascular stent-graft technology is considered a less-invasive therapeutic alternative, and flexible stent-grafts, such as the Matsui-Kitamura stent-graft (MKSG), are being used widely. We report our experience with the curved(More)
BACKGROUND Time limits for neuroprotection by retrograde cerebral perfusion (RCP) and selective cerebral perfusion (SCP) in aortic arch aneurysm repair or dissection are undergoing definition. METHODS Using near-infrared optical spectroscopy, changes in regional cerebrovascular oxygen saturation (rSO2) were compared between the two perfusion methods. (More)
We assessed the efficacy of emergency percutaneous cardiopulmonary bypass support (PCPS) in the treatment of patients with acute myocardial infarction complicated by cardiogenic shock. Emergency PCPS was instituted in 21 consecutive patients beginning in 1991. After the stabilization of the hemodynamics, coronary reperfusion was performed by means of(More)
Atrial rupture by blunt trauma is lethal and one of controversial problems for cardiovascular surgeons, because of complexed conditions due to multiple organ injuries. Some papers recommend strategy of early diagnosis and treatment at an acute phase for better clinical course, but high mortality rate has not been improved yet, especially that of left atrial(More)
Composite graft replacement of the ascending aorta and aortic valve has now become a safe surgical procedure; however, early and late complications still frequently occur. Anastomotic dehiscence after a composite graft replacement is one potentially lethal complication. We herein report two cases of a pseudoaneurysm caused by dehiscence of the right(More)
During the past eight years, 46 of the 106 patients who underwent mitral valve replacement were associated with tricuspid insufficiency. No surgical correction was performed (14 cases) in cases of slight tricuspid insufficiency. Tricuspid annuloplasty (11 cases) or valve replacement (21 cases) was employed according to the severity of insufficiency. In the(More)
We report two cases of aorto-gastrointestinal fistula. Case 1, a 60-year-old man, suffered from repeat hematemesis. He was preoperatively diagnosed as aortoesophageal fistula with thoracic aortic aneurysm and was successfully treated by graft replacement of the aneurysm. Case 2, a 73-year-old man, presented with massive gastrointestinal bleeding, yet repeat(More)
A 64-year-old woman was admitted due to back pain and dyspnea. She was suffering from fever of unknown origin for a few weeks without aortic aneurysm by enhanced chest computed tomography (CT). Chest CT taken 1 month later revealed rupture of aortic arch aneurysm. Total arch replacement was performed with in situ grafting under selective cerebral perfusion(More)
Two cases of acute aortic dissection which developed compression of the true lumen due to retrograde perfusion during cardiopulmonary bypass were reported. In the first case, coronary reperfusion could not be achieved when the aortic cross-clamping was removed after Collins' method of aortic dissection. There was no blood flow from the true lumen through(More)