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Two-Stage Treatment of a Coronary Artery Stenosis with a Coronary Aneurysm using Off-Pump Coronary Artery Bypass Grafting and Implantation of a Covered Stent:A Case Report Akinobu Sasaki 1 , Kimio Tanaka 2 , Yasushi Terada 3 1Department of Cardiovascular Surgery, Mito Brain Heart Center 2Department of Cardiology, Mito Brain Heart Center 3Department of Cardiovascular Surgery, Shonai Amarume Hospital Keyword: 冠動脈瘤 , 冠動脈バイパス術 , covered stent , coronary artery aneurysm , coronary artery bypass grafting pp.998-1001
Published Date 2014/10/15
DOI https://doi.org/10.11477/mf.1404200020

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 An 80-year-old man was admitted to our hospital for the evaluation of exertional chest pain. Coronary angiography revealed 90% stenosis in the proximal and middle segments of the left anterior descending artery(LAD), 75% stenosis in the obtuse marginal branch, and a saccular coronary artery aneurysm(CAA)in the proximal LAD. The diameter of the CAA was 13.1mm. Because the CAA was present in the proximal part of the LAD, we preferred to perform the operation under cardiac arrest to ensure safe surgical treatment of the CAA. However, aortic cross-clamping under cardiopulmonary bypass was considered a high-risk procedure because of the degree of atherosclerosis in the ascending aorta. Therefore, off-pump coronary artery bypass grafting was performed first, and on postoperative day 10, a polytetrafluoroethylene-covered stent was implanted in the LAD to seal the CAA inlet. The blood flow in the aneurysm was completely blocked, and we were able to obtain an excellent result. The natural history of a CAA remains unclear. Therefore, the management of patients with a CAA is still controversial. As CAA rupture may be fatal, the appropriate therapeutic time and method for each individual case should be carefully chosen.


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電子版ISSN 1882-1200 印刷版ISSN 0452-3458 医学書院

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