Given the task definition and input, reply with output. In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

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 .

It is also known as coronary artery bypass graft ( CABG , pronounced " cabbage " ) surgery , and known by doctors as heart bypass or bypass surgery .