Conventional bypass surgery on pump is a procedure used to improve blood flow to the heart. During the surgery, a surgeon takes a blood vessel from another part of the body, such as the leg or arm, and uses it to create a bypass graft around a blocked or narrowed coronary artery. This allows blood to flow around the blockage and reach the heart muscle.

Conventional bypass surgery on pump is typically performed under general anesthesia. The surgeon makes a large incision in the chest and uses a heart-lung bypass machine to keep the blood flowing during the surgery. The surgeon then takes the blood vessel from the other part of the body and uses it to create the bypass graft. The graft is then sewn in place around the blocked or narrowed coronary artery.

Conventional bypass surgery on pump is a major surgery and typically requires a hospital stay of 5-7 days. There are some risks associated with the surgery, including bleeding, infection, and heart rhythm problems. However, the benefits of the surgery can outweigh the risks for people with severe coronary artery disease.