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Reoperation for coronary artery stenosis after arterial switch operation.
Interactive Cardiovascular and Thoracic Surgery 2018 August 2
OBJECTIVES: Coronary artery stenosis after an arterial switch operation (ASO) leads to subsequent reoperation. Therefore, we investigated the indications for reoperation and the results of reoperation to suggest methods to improve our management protocol for coronary artery stenosis after an ASO.
METHODS: Between September 2003 and December 2016, 86 consecutive patients who underwent an ASO were included in the study. The indications for reoperation, reoperation techniques and postoperative results were investigated.
RESULTS: There were 4 in-hospital deaths (4.7%). One late death occurred during the median follow-up period of 59.6 months. The 5-year overall survival rate was 94.2%. Seven reoperations were performed in 5 patients due to coronary artery stenosis. The indications for reoperation were severe coronary artery stenosis confirmed by computed tomography (CT) angiography or coronary angiography with or without symptoms. Patients with a coronary artery between the great arteries or a high take-off coronary artery frequently required reoperation due to coronary artery stenosis. None of the patients who underwent unroofing or cut-back angioplasty experienced complications during the median follow-up period of 52.0 months. However, 2 patients who underwent ostioplasty required an additional reoperation due to coronary artery restenosis.
CONCLUSIONS: A standardized follow-up protocol including CT angiography or coronary angiography after the ASO is required to address coronary artery stenosis. Good reoperation results were observed using the unroofing and cut-back angioplasty techniques.
METHODS: Between September 2003 and December 2016, 86 consecutive patients who underwent an ASO were included in the study. The indications for reoperation, reoperation techniques and postoperative results were investigated.
RESULTS: There were 4 in-hospital deaths (4.7%). One late death occurred during the median follow-up period of 59.6 months. The 5-year overall survival rate was 94.2%. Seven reoperations were performed in 5 patients due to coronary artery stenosis. The indications for reoperation were severe coronary artery stenosis confirmed by computed tomography (CT) angiography or coronary angiography with or without symptoms. Patients with a coronary artery between the great arteries or a high take-off coronary artery frequently required reoperation due to coronary artery stenosis. None of the patients who underwent unroofing or cut-back angioplasty experienced complications during the median follow-up period of 52.0 months. However, 2 patients who underwent ostioplasty required an additional reoperation due to coronary artery restenosis.
CONCLUSIONS: A standardized follow-up protocol including CT angiography or coronary angiography after the ASO is required to address coronary artery stenosis. Good reoperation results were observed using the unroofing and cut-back angioplasty techniques.
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