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  • Title: Late results after PTCA for coronary stenosis after the arterial switch procedure for transposition of the great arteries.
    Author: Kampmann C, Kuroczynski W, Trübel H, Knuf M, Schneider M, Heinemann MK.
    Journal: Ann Thorac Surg; 2005 Nov; 80(5):1641-6. PubMed ID: 16242430.
    Abstract:
    BACKGROUND: The arterial switch operation has become the surgical approach of choice for d-transposition of the great arteries, but there is an increased awareness of adverse sequelae in some survivors. Long-term patency and normal function of the translocated coronary arteries must be achieved. It is reported that dependent of the prior coronary status, 3% to 11% of all survivors have proximal coronary stenosis or complete occlusion develop after arterial switch operations. However, treatment of these stenoses is still a matter of debate. Late results after percutaneous transluminal coronary angioplasty (PTCA) for coronary stenosis after the arterial switch operation for d-transposition of the great arteries are reported. METHODS: Seven children after arterial switch operation for d-transposition of the great arteries who had subsequently undergone PTCA for coronary stenosis were angiographically re-evaluated 3 to 15 months after the initial PTCA and again after 3 to 5 years. RESULTS: All children survived the initial PTCA procedure. There were no late deaths. The degree of stenosis before PTCA ranged from 74% to 97%; immediately after PTCA from 5% to 10%; at 3 to 15 months after PTCA from zero to 6%; and at 3 to 5 years after PTCA from zero to 3%. Three to 5 years after PTCA all children showed normal development of the treated coronary artery. CONCLUSIONS: Primary PTCA of stenotic proximal coronary arteries after the arterial switch procedure for d-transposition of the great arteries seems to be an effective treatment with excellent long-term results.
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