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Long-term follow-up of sequential aortocoronary venous grafts
Insights
Multiple sequential saphenous vein grafts for myocardial revascularization show improved 3-year patency rates compared to individual grafts. This technique offers better outcomes for coronary artery bypass surgery.
Area of Science:
- Cardiovascular Surgery
- Vascular Grafting
- Coronary Artery Disease Management
Background:
- The study revisits a 1972 report on myocardial revascularization using multiple sequential aortocoronary anastomoses with a single saphenous vein.
- Long-term follow-up data is crucial for evaluating the efficacy of surgical techniques in coronary artery disease.
Purpose of the Study:
- To assess the 3-year patency rates and survival outcomes of myocardial revascularization employing multiple sequential saphenous vein grafts.
- To compare the efficacy of this technique against individual vein grafts for coronary artery bypass surgery.
Main Methods:
- Follow-up of 121 survivors from an initial cohort of 130 patients who underwent myocardial revascularization.
- Angiographic assessment of graft patency at 3 years in a subset of patients.
- Comparison of life table survival curves between sequential and individual vein graft techniques.
Main Results:
- Angiographic patency at 3 years was 70% in the studied group (18 patients) using sequential saphenous vein grafts.
- These patency rates exceed those observed with individual vein grafts during the same period.
- Life table survival curves demonstrate superior outcomes for the sequential graft technique.
Conclusions:
- Multiple sequential saphenous vein grafts demonstrate improved patency and potentially decreased operating time compared to individual grafts.
- The technique is considered effective for managing multiple-vessel coronary disease, often in conjunction with internal mammary artery grafts.
- The findings support the continued use and validation of this myocardial revascularization approach.
Abstract:
In 1972 we reported myocardial revascularization of 130 patients using multiple sequential aortocoronary anastomoses to a single saphenous vein ]1]. Of the 122 survivors described in that report, 121 (99%) have been followed an additional 3 years. Twelve deaths occurred during the interval. The 110 currently followed patients represent 290 anastomoses; 54 have been studied angiographically since operation. Angiographic patency at 3 years in the studied group (18) was 70%. These figures exceed our follow-up data for 135 patients revascularized during the same period using individual vein grafts. Comparison of life table survival curves demonstrates this result. We believe the improved patency and decreased operating time that have resulted from employing this technique have outweighed the likelihood of a proximal stenosis causing closure of the whole graft system. We continue to use this technique in combination with internal mammary artery grafts in the management of multiple-vessel coronary disease. Good early results using this technique have been reported by other authors [2, 3, 5].