In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.

It is also known as coronary artery bypass graft ( CABG , pronounced " cabbage " ) surgery , and known by doctors as heart bypass or bypass surgery .
Coronary artery bypass surgery , also known as coronary artery bypass graft ( CABG , pronounced " cabbage " ) surgery , and colloquially heart bypass or bypass surgery , is a surgical procedure to restore normal blood flow to an obstructed coronary artery .