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[Cardiac revascularization using both mammary arteries]
1Thoraxkirurgisk afdeling R, Amtssygehuset i Gentofte.
Insights
Using both internal mammary arteries for coronary artery bypass grafting (CABG) shows low complications and better long-term results than standard grafts. This technique offers a more durable solution for heart revascularization.
Area of Science:
- Cardiovascular Surgery
- Thoracic Surgery
- Vascular Grafting
Context:
- Coronary artery bypass grafting (CABG) is a common procedure for heart revascularization.
- Traditional CABG often uses saphenous vein grafts, which have limitations in long-term patency.
- Internal mammary arteries offer a potentially more durable alternative for arterial revascularization.
Purpose:
- To evaluate the safety and efficacy of using bilateral internal mammary arteries in combination with vein grafts for CABG.
- To compare the early outcomes of this technique with standard CABG procedures.
- To assess the long-term benefits of using bilateral mammary artery grafts regarding graft patency and recurrent angina.
Summary:
- A study involving fifty Danish patients undergoing CABG utilized both internal mammary arteries with vein grafts.
- Exclusion criteria included diabetes, obesity, and age over 75.
- Patients were followed for at least one month post-operation, reporting no deaths and a low complication rate comparable to standard CABG.
Impact:
- Bilateral mammary artery grafts demonstrate superior long-term patency compared to vein grafts, with reduced atherosclerosis.
- Fewer patients experience recurrent angina 15 years after procedures using bilateral mammary arteries.
- This technique is suitable for approximately half of CABG candidates and is particularly recommended for younger patients seeking durable heart revascularization.
Abstract:
Both internal mammary arteries in combination with veins were used for revascularization of the hearth in fifty Danish patients undergoing coronary artery bypass grafting (CABG) at Gentofte Hospital during the period 1994-1996. Patients with insulin-dependent diabetes mellitus, obesity, and age over 75 years were excluded. The patients were followed for at least one month after the operation. No patients died, and the complication rate was low and comparable to standard CABG using the left mammary artery and vein grafts. It is known from the literature that 10 years after CABG only 50% of vein grafts remain patent, and half of these have severe atherosclerosis. The mammary artery is far more resistant to atherosclerosis and 15 years after the procedure fewer patients have recurrent angina when both mammary arteries have been used. Bilateral mammary artery grafts can be used in half of CABG-procedures, and are especially indicated in younger patients.