Coronary artery bypass surgery

/kˈɒɹənəɹi ˈɑːtəɹi bˈaɪpas sˈɜːdʒəɹi/

/kˈɔːɹənˌɛɹi ˈɑːɹɾɚɹi bˈaɪpæs sˈɜːdʒɚɹi/

a procedure that creates new pathways for blood flow around blocked or narrowed coronary arteries to improve heart muscle blood supply