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Article in Japanese | WPRIM | ID: wpr-374389


In this study, we report early and mid-term outcomes of endoscopic saphenous vein (SV) harvesting (EVH) for coronary artery bypass grafting. EVH is expected to have superior cosmetic results and fewer wound complications than conventional open techniques. EVH was performed in 262 patients from April 2008 to December 2010. From September 2010, we have administered heparin before EVH to prevent intraluminal SV clot formation. The mean age of the patients was 70±7.3 years, and 178 (67.9%) patients were men. The success rate of EVH was 97.3%. Hospital mortality was 1.2%. Postoperative wound complications occurred in only 7 (2.8%) patients. The early and mid-term patency was 95.8% (276/288) and 74.2% (187/252), respectively, as evaluated by postoperative angiography or computed tomography. Comparing the mid-term patency rate between the groups with or without systemic heparinization before EVH, statistical significance was not observed, but the mid-term patency was good in the group with systemic heparinization (82.5% vs. 73.6%, <i>p</i>=0.16). Actuarial 1-year and 3-year survival were 93.9% and 79%. Actuarial 1-year and 3-year major adverse cardiac event-free rates were 92.2% and 77.5%. In 10 patients who had SV graft occlusion during the observation period, percutaneous coronary intervention was required for the native coronary artery. EVH has great cosmetic advantages and has a good early patency. However, the mid-term patency is not satisfactory. Thus, systemic heparinization before EVH, improvement of the device and further clinical experience and techniques are required to improve the mid-term and late patency.

Article in Japanese | WPRIM | ID: wpr-361878


A 20-year-old male was referred to our hospital to undergo operative treatment due to aortic valve insufficiency which had gradually worsened. The patient's chief complaint was a loss of breath upon effort which had progressively worsened after undergoing aortic valve plasty (AVP) for aortic valve insufficiency with infective endocarditis at another institution. AVP by the cusp extension method had been performed because of the patient's youth and there had been no change in the morbid state, except for the presence of a non-coronary cusp. In addition, the aortic valve insufficiency was controlable and postoperative course was also excellent. The cusp extension method was therefore considered to be an appropriate procedure for this case since it would allow the patient to return it to a state with a more normal heart, since the valve organization after this procedure would be able to reach a maximum level.

Article in Japanese | WPRIM | ID: wpr-361877


A 69-year-old woman was admitted with fever and dyspnea. We diagnosed the congestive heart failure due to infective endocarditis (IE) with mitral valve regurgitation and stenosis. We immediately started medical therapy in order to control both the heart failure and the infection. However, we had to semi-emergency mitral valve replacement additionally perform a days after the initial hospitalized due to a progression of the heart failure. The operative findings showed an area of vegetation to be incarcerated in the mitral orifice. In cases of IE which are associated with mitral stenosis, we therefore should consider the possibility that vegetation may be present in the mitral orifice and closely follow such patients by echocardiography.

Article in Japanese | WPRIM | ID: wpr-361792


We presented here 2 cases of rare nonvascular tumor involving the aorta. Case 1: A 69-year-old woman. She presented leg edema and dyspnea on admission. Computed tomography revealed abdominal aortic aneurysm perforating left common iliac vein. Abdominal aortic aneurysm replacement and fistula closure were done on an emergency basis. Immunohistologic examination revealed that malignant mesothelioma invaded the aortic wall. Case 2: A 47-year-old woman presented with dyspnea. Enhanced computed tomography revealed rupture of the descending aortic aneurysm (saccular type). Aortic replacement was done on an emergency basis. One year after the operation, computed tomography revealed a giant mass (160×70mm) surrounding the descending thoracic aorta. On biopsy, malignant schwannoma was found to invade the descending aorta. Sometimes nonvascular tumors form aneurysms. So we should be careful in diagnosis before operation.

Article in Japanese | WPRIM | ID: wpr-367234


A 79-year-old woman had received implantation of a pace maker for sick sinus syndrome at age 64 and tricuspid valve annuloplasty and Maze at age 68. Furthermore, she underwent tricuspid valve and mitral valve replacement with a bioprosthesis because of tricuspid valve and mitral valve regurgitation at age 73. She was referred to our institution for congestive heart failure in November 2005, because her bioprostheses at the mitral and tricuspid positions had shown significant regurgitation due to the degeneration of the prostheses, which required rereplacement. Because 1) surgical treatment of the heart had been performed twice in the past, 2) the general condition was not good owing to cirrhosis and hypothyroidism and 3) the durability of bioprostheses is short, we performed mitral valve re-replacement by using the “valve-on-valve” technique for reducing the invasion of surgical therapy. She had a satisfactory postoperative course. The “valve-on-valve” technique is a useful option for the re-replacement of bioprosthesis because it obviates the need for removing the sewing ring of the previous bioprosthesis.