Where will the surgeon take the tubes for bypass from?
The vein from the leg has been traditionally used for bypass surgery and has proven to be a very good conduit. However, it does develop disease with time and 30-40% will block off by 10 years. This may lead to the need for a repeat bypass operation or ,increasingly nowadays, to balloon angioplasty with stent insertion. The internal thoracic or mammary artery is taken from inside the chest wall and has the best long term patency rate of all the conduits. It has over 90% chance of staying open over 10 years and this fact has been responsible for increased survival.
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