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The Journal of Cardiovascular Surgery 2007 October;48(5):633-40

language: English

Left anterior descending coronary artery: long-term angiographic results of CABG with endarterectomy

Sachweh J. S. 1,2,3,4 Messmer B. J. 1, Groetzner J. 1,3,4, Vom Dahl J.3,4,5, Fausten B. 1, Daebritz S. H. 1

1 Department of Thoracic and Cardiovascular Surgery University Hospital, Aachen, Germany
2 Department of Pediatric Cardiac Surgery University Hospital, Aachen, Germany
3 Department of Cardiology St. Franziskus Hospital, Moenchengladbach, Germany
4 Department of Cardiac Surgery Klinikum Grosshadern Ludwigs-Maximilians-University, Munich, Germany
5 Department of Cardiology University Hospital, Aachen, Germany


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Aim. The procedure of coronary bypass grafting (CABG) with coronary endarterectomy (CE) is controversial. However, in the setting of severely calcified coronary arteries CE may enable complete revascularization. Complete revascularization, especially of the left anterior descending artery (LAD), is important for long-term outcome. In this study we assessed long-term LAD graft patency and anterior wall function after CABG with CE of the LAD.
Methods. Between 1984 and 1992, 283 patients underwent CABG with CE of the LAD. In 50 patients (47 men), aged 59±7.6 (40-77), clinical reassessment and surveillance angiography were performed. In all patients complete revascularization had been achieved with 3.5±1 (1-5) grafts/patient with 1-3 CE/patient. The LAD was grafted either with a saphenous vein segment (N=38) or with left intern thoracic artery (N=12). A graft obstructed less than 50% in diameter was defined as patent.
Results. At follow-up 39 patients (78%) were in CCS class I/II and had improved significantly (P<0.000). Control angiography after 7.6±2.5 (3.5-11.7) years after CABG revealed a patent LAD graft in 30/50 patients (60%). Actuarial graft patency was 100%, 96%, and 56% after 2, 5, and 10 years and was lower in patients with diabetes (P=0.001). Deterioration of anterior wall motion was observed in 17 patients (34%) and was more frequent if anterior wall motion was preoperatively normal (P=0.002), irrespective of LAD graft patency.
Conclusion. Clinical status and long-term graft patency of grafts on endarterectomized LAD is considerable. However, patients with preoperatively normal anterior wall function are at increased risk for myocardial damage in the long-term.

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